Document:

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                                                                    EXHIBIT 10.4

                                 iSKY.NET, INC.
                          SECURITIES PURCHASE AGREEMENT
                                OCTOBER 19, 1999

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                          SECURITIES PURCHASE AGREEMENT

         THIS SECURITIES PURCHASE AGREEMENT ("AGREEMENT") is made as of the 19th
day of October, 1999 (the "EFFECTIVE DATE"), by and among ISKY.NET, INC., a
Delaware corporation (the "COMPANY"), and the Persons signatory hereto (each of
whom is referred to herein as a "PURCHASER" and all of whom, together, are
referred to herein as the "PURCHASERS"). Each of the Company and the Purchasers
is sometimes referred to herein as a "PARTY" and all of them, together, are
sometimes referred to herein as the "PARTIES."

         WHEREAS, the Company and the Purchasers desire to enter into this
Agreement pursuant to which, among other things, (1) at the First Closing (as
defined below) (a) LIBERTY KASTR CORP., a Delaware corporation ("LIBERTY"), will
lend to the Company, and the Company will borrow from Liberty, $15.0 million,
(b) KPCB HOLDINGS, INC., a California corporation ("KPCB"), will lend to the
Company, and the Company will borrow from KPCB, $8.0 million, (c) DIRECTCOM
NETWORKS, INC., a Delaware corporation ("DIRECTCOM"), will lend to the Company,
and the Company will borrow from DirectCom, $4.0 million and (d) Televerde
Communications L.P., a Virginia limited partnership ("TELEVERDE"), will lend to
the Company, and the Company will borrow from Televerde, $2,028,942.68 million,
(each a "LOAN" and, collectively, the "LOANS;" see SCHEDULE I hereto) and (2) at
the Second Closing (as defined below), (a) the entire amount of the Loan made by
each such Purchaser to the Company at the First Closing shall be converted into
the number and class of shares of Preferred Stock (as defined below) set forth
opposite each Purchaser's name on SCHEDULE II hereto (the "PREFERRED SHARES")
and (b) the Company shall issue to the Purchasers, and the Purchasers shall
purchase from the Company, the additional shares of Preferred Stock set forth
opposite each Purchaser's name on SCHEDULE II hereto (the "ADDITIONAL PREFERRED
SHARES"), all on the terms and subject to the conditions set forth herein; and

         WHEREAS, at the First Closing, concurrently with entering into this
Agreement, the Purchasers will enter into the Other Transaction Documents (as
defined below); and

         WHEREAS, the Board of Directors of the Company (the "BOARD") has
determined that it is in the best interests of the Company to enter into this
Agreement and the Other Transaction Documents, and the Purchasers have approved
this Agreement and the Other Transaction Documents.

         NOW, THEREFORE, in consideration of the mutual promises,
representations, warranties, covenants and conditions set forth in this
Agreement, and other good and valuable consideration, the receipt and
sufficiency of which hereby are acknowledged, the parties hereto agree as
follows:

         1. DEFINITIONS. For purposes of this Agreement, the following terms
have the meanings set forth below:

                  "ADDITIONAL PREFERRED SHARES" is defined in the first WHEREAS
clause hereof.

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                  "AFFILIATE" of any particular Person means any officer,
director, employee, holder of thirty five percent (35%) or more of the voting
securities of such Person or any other Person controlling, controlled by or
under common control with such Person.

                  "AGREEMENT" is defined in the first paragraph hereof.

                  "AMENDED CERTIFICATE" means the Company's Amended and Restated
Certificate of Incorporation, dated as of October 19, 1999, as the same may be
amended or modified from time to time, which shall be in the form of EXHIBIT A
hereto at the time of the First Closing .

                  "AMENDED FIRST OFFER AGREEMENT" means the Amended and Restated
Right of First Offer and Co-Sale Agreement by and among the Company and the
parties signatory thereto, executed and delivered at the First Closing and dated
and effective as of the Second Closing, as the same may be amended or modified
from time to time, which shall be in the form of EXHIBIT B hereto.

                  "AMENDED INVESTOR RIGHTS AGREEMENT" means the Amended and
Restated Investor Rights Agreement by and among the Company and the parties
signatory thereto, executed and delivered at the First Closing and dated and
effective as of the Second Closing, as the same may be amended or modified from
time to time, which shall be in the form of EXHIBIT C hereto.

                  "AMENDED VOTING AGREEMENT" means the Amended and Restated
Voting Agreement by and among the Company and the parties signatory thereto,
executed and delivered at the First Closing and dated and effective as of the
Second Closing, as the same may be amended or modified from time to time, which
shall be in the form of EXHIBIT D hereto.

                  "AMENDMENT TO THE BYLAWS" is defined in Section 9.1.8 below.

                  "BOARD" is defined in the third WHEREAS clause hereof.

                  "BUSINESS DAY" means any day other than Saturday, Sunday or a
day on which banks are required to be closed in the State of Colorado.

                  "BUSINESS PLAN" is defined in Section 6.21.

                  "BYLAWS" means the Company's Bylaws, as amended from time to
time.

                  "CERTIFICATE" means the Company's Certificate of
Incorporation, as filed with the Secretary of State of the State of Delaware on
May 20, 1999.

                  "CLOSINGS" means the First Closing and the Second Closing.

                  "COMMON STOCK" is defined in Section 6.2.2.

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                  "COMPANY" is defined in the first paragraph hereof.

                  "DEFAULT INTEREST RATE" is defined in Section 5.1.3 below.

                  "DIRECTCOM" is defined in the first WHEREAS clause hereof.

                  "DIRECTORS" is defined in Section 9.2.8 below.

                  "DOJ" is defined in Section 8.3.1 below.

                  "EFFECTIVE DATE" is defined in the first paragraph hereof.

                  "EVENT(S) OF DEFAULT" is defined in Section 5.6 below.

                  "EXCHANGE ACT" means the Securities Exchange Act of 1934, as
amended, or any similar federal law then in force.

                  "EXCLUDED NOTE" means each Note as to which a Purchaser has
delivered a Notice Not to Close to the Company during the Purchaser's Notice Not
to Close Period.

                  "FCC" means the Federal Communications Commission.

                  "FCC APPLICATION" means the application filed by the
Subsidiaries of the Company with the FCC requesting authorization to change
control of the Company from Televerde to the shareholders of the Company in
general.

                  "FCC APPROVAL" means the issuance by the FCC of an order
approving the FCC Application.

                  "FCC APPROVAL DATE" means the date of issuance of the FCC
Approval.

                  "FINANCIAL STATEMENTS" is defined in Section 6.14 below.

                  "FIRST CLOSING" is defined in Section 4.1 below.

                  "FIRST OFFER AGREEMENT" means the Right of First Offer and
Co-Sale Agreement, dated May 26, 1999, by and among the Company and the parties
signatory thereto.

                  "FTC" is defined in Section 8.3.1 below.

                  "HSR ACT" means the Hart-Scott-Rodino Antitrust Improvements
Act of 1976, as amended.

                  "HSR REPORT" is defined in Section 8.3.1 below.

                  "INTEREST" is defined in Section 5.1.1 below.

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                  "INTEREST RATE" is defined in Section 5.1.1 below.

                  "INVESTORS" means the Persons identified as such and signatory
to the Amended Investor Rights Agreement.

                  "INVESTOR RIGHTS AGREEMENT" means the Investor Rights
Agreement, dated May 26, 1999, by and among the Company and the parties
signatory thereto.

                  "KPCB" is defined in the first WHEREAS clause hereof.

                  "LIBERTY" is defined in the first WHEREAS clause hereof.

                  "LIBERTY'S DESIGNEE" is defined in Section 8.1.12 below.

                  "LOAN" or "LOANS" is defined in the first WHEREAS clause
hereof.

                  "MAJOR INVESTORS" has the meaning given to it in the Amended
Investor Rights Agreement.

                  "MATERIAL ADVERSE EFFECT" means any event, circumstance or
condition that, individually or in the aggregate, has a material adverse effect
on (a) the business, property, assets, liabilities, condition (financial or
otherwise), operations or results of operations of the Company or any of its
Subsidiaries, (b) the ability of the Company to perform its obligations under
any of the Transaction Documents, (c) the validity or enforceability of any of
the Transaction Documents or (d) the rights and remedies of the Purchasers under
any of the Transaction Documents.

                  "MATURITY DATE" is defined in Section 5.2.1 below.

                  "MAXIMUM LEGAL RATE" is defined in Section 5.1.2 below.

                  "NOTE" or "NOTES" means each and all of the Notes issued by
the Company and purchased by the Purchasers under this Agreement. Each such Note
shall be in the form attached as EXHIBIT E hereto.

                  "NOTE CONVERSION" is defined in Section 5.4 below.

                  "NOTICE NOT TO CLOSE" is defined in Section 4.2.2 below.

                  "NOTICE OF FCC APPROVAL" is defined in Section 4.2.2 below.

                  "OBLIGATIONS" means any and all amounts owing to the
Purchasers under the Notes, including Principal, Interest, fees and expenses
provided for herein and therein and the Note Conversion rights of each
Purchaser.

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                  "OPTION PLANS" is defined in Section 6.2.5 below.

                  "OTHER TRANSACTION DOCUMENTS" is defined in Section 6.4 below.

                  "PARTY" or "PARTIES" is defined in the first paragraph hereof.

                  "PERSON" means an individual, a partnership, a corporation, a
limited liability company ("LLC"), an association, a joint stock company, a
trust, a joint venture, an unincorporated organization and a governmental entity
or any department, agency or political subdivision thereof.

                  "PREFERRED SHARES" is defined in the first WHEREAS clause
hereof.

                  "PREFERRED STOCK" is defined in Section 6.2.1 below.

                  "PRINCIPAL AMOUNT" means, as to each Note, the principal
amount set forth opposite each Purchaser's name on SCHEDULE I hereto, or such
lesser principal amount of the Notes ("PRINCIPAL") as may be outstanding
hereunder at any time and from time to time.

                  "PROPRIETARY INFORMATION" is defined in Section 6.10 below.

                  "PURCHASER" or "PURCHASERS" is defined in the first paragraph
hereof, as modified by Section 4.2.2 below.

                  "PURCHASER'S NOTICE NOT TO CLOSE PERIOD" is defined in Section
4.2.2 below.

                  "SCHEDULE OF EXCEPTIONS" is defined in Section 6 below.

                  "SEC" means the Securities and Exchange Commission.

                  "SECOND CLOSING" is defined in Section 4.2 below.

                  "SECURITIES" means the Note, the Preferred Shares and the
Additional Preferred Shares acquired by each Purchaser hereunder, as well as the
Common Stock issuable upon conversion of such Preferred Shares and Additional
Preferred Shares.

                  "SECURITIES ACT" means the Securities Act of 1933, as amended,
or any similar federal law then in force.

                  "SERIES A PREFERRED STOCK" is defined in Section 6.2.1 below.

                  "SERIES B PREFERRED STOCK" is defined in Section 6.2.1 below.

                  "SERIES C PREFERRED STOCK" is defined in section 6.2.1 below.

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                  "STOCK" means the Common Stock, Series A Preferred Stock,
Series B Preferred Stock and Series C Preferred Stock and any other equity
securities of the Company issued on or after the Effective Date.

                  "SUBSIDIARY(IES)" means, with respect to any Person, any
corporation, LLC, partnership, association or other business entity of which (a)
if a corporation, a majority of the total voting power of shares of stock
entitled (without regard to the occurrence of any contingency) to vote in the
election of directors thereof is at the time owned or controlled, directly or
indirectly, by that Person or one or more of the other Subsidiaries of that
Person or a combination thereof, or (b) if an LLC, partnership, association or
other business entity, a majority of the partnership or other similar ownership
interest thereof is at the time owned or controlled, directly or indirectly, by
any Person or one or more Subsidiaries of that Person or a combination thereof.
For purposes hereof, a Person or Persons shall be deemed to have a majority
ownership interest in a LLC, partnership, association or other business entity
if such Person or Persons shall be allocated a majority of LLC, partnership,
association or other business entity profits or losses or shall be or control
any managing person or general partner of such LLC, partnership, association or
other business entity.

                  "TAX" or TAXES" is defined in Section 6.16 below.

                  "TELEVERDE" is defined in the first WHEREAS clause hereof.

                  "TRANSACTION DOCUMENTS" means this Agreement and the Other
Transaction Documents.

                  "VOTING AGREEMENT" means that certain Voting Agreement, dated
as of May 26, 1999, by and among the Company and the parties signatory thereto.

                  "YEAR 2000 COMPLIANT" is defined in Section 6.29 below.

         2. PURCHASE AND SALE OF THE NOTES. At the First Closing, the Company
agrees to sell to each Purchaser and, subject to the terms and conditions set
forth herein, each Purchaser agrees to purchase from the Company, a Note in the
Principal Amount set forth opposite such Purchaser's name on SCHEDULE I hereto.

         3. ISSUANCE OF THE PREFERRED SHARES AND ADDITIONAL PREFERRED SHARES. At
the Second Closing, (a) the Company agrees to issue to each Purchaser and,
subject to the terms and conditions set forth herein, each Purchaser agrees to
acquire from the Company, the number of Preferred Shares set forth opposite such
Purchaser's name on SCHEDULE II hereto in accordance with the Note Conversion
procedures set forth in Section 5.4 below and (b) the Company agrees to issue
and sell to each Purchaser, and, subject to the terms and conditions set forth
herein, each Purchaser agrees to purchase from the Company, the number of
Additional Preferred Shares set forth opposite such Purchaser's name on SCHEDULE
II hereto at the prices set forth on SCHEDULE II hereto. Notwithstanding
anything herein to the contrary, any Purchaser that timely delivers a Notice Not
to Close to the Company, as provided for in Section 4.2.2 below, shall not be
treated as a Purchaser hereunder for purposes of the Second Closing.

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         4.       CLOSINGS.

                  4.1. FIRST CLOSING. The closing of the issuance by the
Company, and purchase by the Purchasers, of the Notes hereunder (the "FIRST
CLOSING") shall take place at the offices of Brownstein Hyatt & Farber, P.C.,
410 17th Street, Suite 2200, Denver, Colorado 80202, on such date as all of the
conditions to the First Closing, as set forth in Section 9 below, are satisfied
in full (or one or more of such conditions are waived by the Purchasers and/or
the Company, as the case may be), or at such other place or on such other date
as may be mutually agreeable to the Company and the Purchasers. At the First
Closing, the Company shall deliver to each Purchaser a Note upon receipt of
payment from each Purchaser of the aggregate purchase price for such Note (which
shall be an amount equal to the Principal Amount) by a cashier's or certified
check or by wire transfer of immediately available funds to the Company's
account at Norwest Bank of Colorado, ABA #102000076, Account #1078010289,
Contact: Paul Froelich. Each Note, upon issuance to the Purchaser thereof, shall
be duly executed by the Company.

                  4.2. SECOND CLOSING.

                  4.2.1 The closing of the issuance by the Company, and
acquisition/purchase by the Purchasers, of the Preferred Shares and Additional
Preferred Shares hereunder (the "SECOND Closing") shall take place (a) at the
offices of Brownstein Hyatt & Farber, P.C., 410 17th Street, Suite 2200, Denver,
Colorado 80202, on the forty-sixth (46th) day immediately following the FCC
Approval Date, provided that all of the conditions to the Second Closing, as set
forth in Section 9 below, have been fully satisfied as of that date (or one or
more such conditions have been waived by the Purchasers and/or the Company, as
the case may be) or, if all of such conditions to the Second Closing have not
been satisfied (or waived, as the case may be) by such forty-sixth (46th) day,
then on the first day thereafter that all of such conditions have been fully
satisfied (or waived as the case may be) or (b) at such other place and time as
may be mutually agreeable to the Company and the Purchasers. At the Second
Closing, the Company shall deliver to each Purchaser (other than a Purchaser
that has timely delivered a Notice Not to Close to the Company) stock
certificates evidencing the Preferred Shares and Additional Preferred Shares it
is acquiring hereunder (in each case in the number set forth opposite each
Purchaser's name on SCHEDULE II hereto) upon receipt (a) from each Purchaser
(other than a Purchaser that has timely delivered a Notice Not to Close to the
Company) of its Note (for which the Preferred Shares are being issued pursuant
to the Note Conversion procedures set forth in Section 5.4 below) marked "Paid
In Full" and (b) payment from each Purchaser (other than a Purchaser that has
timely delivered a Notice Not to Close to the Company) of the aggregate purchase
price for its Additional Preferred Shares (as set forth on SCHEDULE II hereto)
by a cashier's or certified check or by wire transfer of immediately available
funds to the Company's account at Norwest Bank of Colorado, ABA #102000076,
Account #1078010289, Contact: Paul Froelich. Each stock certificate evidencing
the Preferred Shares and Additional Preferred Shares issued to each Purchaser
(other than a Purchaser that has timely delivered a Notice Not to Close to the
Company), upon issuance to thereof, shall be duly executed by an authorized
officer or officers, as the case may be, of the Company. Notwithstanding
anything herein to the contrary, any Purchaser that timely delivers a Notice Not

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to Close to the Company, as provided for in Section 4.2.2 below, shall not be
treated as a Purchaser hereunder for purposes of the Second Closing.

                  4.2.2 The Company shall notify each Purchaser in writing
("NOTICE OF FCC APPROVAL") of the Company's receipt of the FCC Approval within
three (3) Business Days after the FCC Approval Date. Each Purchaser shall have
the right to elect not to participate in the Second Closing if (a) any Person
files an objection to the FCC Approval during the thirty (30) day period
immediately following the FCC Approval Date as permitted under applicable FCC
regulations or (b) the FCC initiates a reconsideration of the FCC Approval
during the forty (40) day period immediately following the FCC Approval Date as
permitted under applicable FCC regulations, if the Purchaser gives written
notice (a "NOTICE NOT TO CLOSE") of such election to the Company within the
period commencing on the forty-first (41st) day following the FCC Approval Date
and ending on the forty-fifth (45th) day following the FCC Approval Date (the
"PURCHASER'S NOTICE NOT TO CLOSE PERIOD"). A Purchaser that delivers a Notice
Not to Close to the Company during the Purchaser's Notice Not to Close Period
shall not be treated as a Purchaser for purposes of the Second Closing, and from
and after the date of delivery of such Notice Not to Close such Purchaser's Note
shall be an Excluded Note and shall have the rights specified as such in
accordance with Section 5 hereof. A Purchaser that fails to deliver a Notice Not
to Close during the Purchaser's Notice Not to Close Period shall be obligated to
meet its obligations under Section 4.2 hereof.

                  4.2.3 At the Second Closing, as part of the transactions
contemplated by this Agreement, DirectCom or its Affiliates and Televerde, or
its Affiliates, may also contribute to the Company additional applications to
acquire FCC authorizations in exchange for stock, or the right to acquire stock,
in the Company.

         5.       TERMS OF THE NOTES

                  5.1 INTEREST PAYMENTS.

                           5.1.1 Except as otherwise provided herein, interest
("INTEREST") shall accrue on the outstanding Principal Amount at the rate of 12%
per annum (the "INTEREST RATE"), calculated on the basis of the number of days
elapsed in a 365-day year; provided, however, that Interest shall cease to
accrue on the Notes during the period from the later of the FCC Approval Date
and the date on which all of the conditions to the Second Closing, as set forth
in Section 9 below, have been fully satisfied (or waived by the applicable Party
or Parties for whose benefit the condition is included), except for conditions
that by their terms are intended to be satisfied at the Second Closing, through
the forty-fifth (45th) day after the FCC Approval Date (the "INTEREST HIATUS
PERIOD"); provided, however, that there shall be no Interest Hiatus Period with
respect to the Note held by any Purchaser that delivers a Notice Not to Close to
the Company during the Purchaser's Notice Not to Close Period and provided
further that the Interest Hiatus Period shall cease and Interest shall be deemed
to have accrued for the entire period during which Principal Amount is
outstanding at any time that an Event of Default shall occur.

                           5.1.2 If the Interest Rate for the Notes exceeds the
maximum rate of interest permissible under any applicable law at any time (the
"MAXIMUM LEGAL RATE"), the

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Interest Rate payable on such Note shall be equal to the Maximum Legal Rate at
such time; provided, that if at any time after the imposition of the Maximum
Legal Rate, the Interest Rate is less than the Maximum Legal Rate, the Company
shall continue to pay Interest at the Maximum Legal Rate until such time as the
total Interest received by the Purchasers is equal to the total Interest the
Purchasers would have received had the Maximum Legal Rate not been so imposed.

                           5.1.3 Upon the occurrence of an Event of Default and
for so long as such Event of Default continues and Principal Amount remains
outstanding, Interest shall accrue on the outstanding Principal Amount at the
rate per annum of the lower of eighteen percent (18%) or the Maximum Legal Rate
(the "DEFAULT INTEREST RATE").

                  5.2 PAYMENTS OF PRINCIPAL AND INTEREST.

                           5.2.1 The "MATURITY DATE" of the Notes shall be
October 18, 2000, unless the Purchaser has delivered a Notice Not to Close to
the Company as provided for in Section 4.2.2 above, in which case the Maturity
Date of that Purchaser's Note shall be the one hundred sixty sixth (166th) day
following the FCC Approval Date.

                           5.2.2 Except as otherwise provided herein, the
aggregate unpaid Principal Amount of the Notes together with all accrued and
unpaid Interest thereon and any and all other Obligations under the Notes shall
be due and payable in full on the Maturity Date. Except as provided in Section
5.4 below, the Company shall not have the right to prepay the Notes in whole or
in part prior to the Maturity Date.

                           5.2.3 The Company shall make each payment of
Principal of, or accrued Interest on, the Notes or any other Obligations due to
the Purchasers under the Notes at the address for each Purchaser set forth on
SCHEDULE I hereto, or as otherwise instructed in writing by a Purchaser.

                           5.2.4 Except as otherwise provided herein, all
payments of all Obligations under the Notes shall be made in United States
dollars by wire transfer of immediately available funds.

                           5.2.5 Whenever any payment of any Obligation under
the Notes shall become due, or otherwise would occur, on a day that is not a
Business Day, such payment shall be made on the next succeeding Business Day,
and such extension of time shall in such case be included in the computation of
such Interest payable, or other amount, if applicable.

                           5.2.6 If at any time any payment of any Obligation
under the Notes is rescinded or must otherwise be restored or returned upon the
insolvency, bankruptcy or reorganization of the Company or otherwise, such
Obligations, but only to the extent so rescinded, restored or returned, shall be
reinstated as though such payment had been due but not made when due.

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                  5.3 APPLICATION OF PAYMENTS.

                           5.3.1 Except as otherwise expressly provided herein
above, each payment of Principal and Interest shall be applied among the Notes
pro rata in accordance with their respective outstanding Principal Amounts, (a)
first to Obligations under the Notes other than Principal and Interest then due,
(b) second to Interest accrued and then due and (c) third, to any Principal then
due.

                           5.3.2 Upon payment in full of all of the Obligations
with respect to the Notes, the Notes shall be marked "Paid in Full" and returned
to the Company.

                  5.4 CONVERSION OF THE NOTES INTO THE PREFERRED SHARES. At the
Second Closing (upon satisfaction of all of the conditions of the Purchasers and
the Company to the Second Closing or the waiver of one or more of such
conditions, as the case may be), the Notes (other than Excluded Notes) shall be
converted, without requiring any further action on the part of any Party, into
that number of Preferred Shares set forth opposite each Purchaser's name on
SCHEDULE II hereto (the "NOTE CONVERSION"). All Interest and other amounts
(other than Principal) on each Note (other than Excluded Notes) owing on the
date of the Second Closing shall be paid in full on the date of the Second
Closing by a cashier's or certified check or by wire transfer of immediately
available funds, as specified by each Purchaser in writing delivered to the
Company no less than two Business Days prior to the date of the Second Closing.
From and after the Second Closing Date, without any action on the part of any
Party, the Notes (other than Excluded Notes) shall be cancelled and shall no
longer evidence an indebtedness for borrowed money, and notwithstanding anything
herein to the contrary, the term "Obligations" as used herein shall not include
the Notes or the indebtedness evidenced thereby. The Excluded Notes shall not be
converted into the Preferred Shares at the Second Closing under this Section
5.4, but rather, shall remain outstanding in accordance with their terms.

                  5.5 TRANSFERS OF NOTES. Unless otherwise consented to in
advance in writing by the Company, a Purchaser may not sell, transfer, pledge or
assign all or any portion of the Note held by it, or sell, transfer, pledge or
assign any interest in or participation in any Note, to any Person except as
provided in Section 7.7 below.

                  5.6 EVENTS OF DEFAULT. In case of the happening of any of the
following events (each, an "EVENT OF DEFAULT"):

                           (a) the Company shall fail to make any payment of
Principal within three days when and as the same shall become due and payable,
whether at the due date thereof, by acceleration or otherwise; or

                           (b) the Company shall fail to pay any Interest, fee
or other Obligation within five days when and as the same shall become due and
payable, whether at the due date thereof, by acceleration or otherwise; or

                           (c) the Company shall materially fail to observe or
perform any material covenant or agreement contained in this Agreement, the
Notes or the Other Transaction

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Documents and such failure shall continue unremedied for a period of thirty (30)
days following written notice thereof to the Company from any Purchaser; or

                           (d) any representation or warranty made by the
Company contained in this Agreement or the Other Transaction Documents shall
prove to have been false or misleading in any material respect when made or
furnished; or

                           (e) the Company or any of its Subsidiaries shall (i)
voluntarily commence any proceeding or file any petition or proposal or any
notice of its intent to commence or file any such proceeding, petition or
proposal seeking relief under Title 11 of the United States Code or any other
federal or state bankruptcy, insolvency or similar law, (ii) consent to the
institution of, or fail to controvert in a timely and appropriate manner, any
such proceeding or the filing of any such petition or proposal, (iii) apply for
or consent to the appointment of a receiver, trustee, custodian, sequestrator or
similar official for any such Person or for any substantial part of its property
or assets, (iv) make a general assignment for the benefit of creditors, (v) fail
generally to pay its debts as they become due, or (vi) take any corporate or
stockholder action in furtherance of any of the foregoing; or

                           (f) an involuntary proceeding shall be commenced or
an involuntary petition shall be filed in a court of competent jurisdiction
seeking (i) relief in respect of the Company or any of its Subsidiaries or of
any substantial part of the property or assets thereof, under Title 11 of the
United States Code or any other federal or state bankruptcy, insolvency or
similar law, (ii) the appointment of a receiver, trustee, custodian,
sequestrator or similar official for the Company or any of its Subsidiaries or
any substantial part of its property or (iii) the winding-up or liquidation of
the Company or any of its Subsidiaries, and such proceeding, petition or order
shall continue unstayed and in effect for a period of 90 consecutive days; or

                           (g) this Agreement shall cease to be in full force
and effect and enforceable against the Company or any of its Subsidiaries in
accordance with its terms (other than solely by reason of any action taken (or
the failure to take any action) by a Purchaser); or

                           (h) the shareholders of the Company on the date of
the First Closing shall cease to own, beneficially and of record, at least 50.1%
of the total outstanding number of shares of Stock; or

                           (i) the FCC Application shall have been denied;

                           (j) there has been a revocation or termination of the
license to operate Ka-band geostationary satellites at 109.2 W.L. or 73 W.L.;

then, upon the occurrence of any such Event of Default (other than an Event of
Default described in Sections 5.6(e) or (f) above, in which case all Obligations
shall automatically become immediately due and payable in full), at any time
thereafter during the continuation of such Event of Default, each Purchaser may,
by written notice delivered to the Company, take any or all of the following
actions: (i) declare such Purchaser's Note to be forthwith due and payable,
whereupon the entire unpaid Principal Amount, together with accrued and unpaid
Interest

                                       11
<PAGE>   13

thereon, and all other Obligations, shall become forthwith due and payable,
without presentment, demand, protest or any other notice of any kind, all of
which are hereby expressly waived by the Company, anything contained herein or
in any of the Notes to the contrary notwithstanding, and (ii) exercise any and
all other remedies provided hereunder and under the Notes or available at law or
in equity upon the occurrence and continuation of an Event of Default.

         6. REPRESENTATIONS AND WARRANTIES OF THE COMPANY. The Company hereby
represents and warrants to the Purchasers that, except as set forth on the
Schedule of Exceptions (the "SCHEDULE OF EXCEPTIONS") furnished to each of the
Purchasers and/or counsel for each of the Purchasers prior to execution hereof
and attached hereto as SCHEDULE III, which exceptions shall be deemed to be
representations and warranties as if made hereunder:

                  6.1 ORGANIZATION, GOOD STANDING AND QUALIFICATION. The Company
is a corporation duly organized, validly existing and in good standing under the
laws of the State of Delaware. The Company is duly qualified to transact
business and is in good standing in each jurisdiction in which the failure to so
qualify would have a Material Adverse Effect on its business or properties. The
Company has provided each Purchaser or its counsel a certified copy of the
Company's Amended Certificate, including all amendments thereto, as in effect on
the date hereof.

                  6.2 CAPITALIZATION AND VOTING RIGHTS. The authorized capital
of the Company consists of:

                           6.2.1 PREFERRED STOCK. 118,645,738 shares of
Preferred Stock, par value $.001 (the "PREFERRED STOCK"), of which:

                                (i) 109,499,831 shares have been designated
Series A Preferred Stock (the "SERIES A PREFERRED STOCK"), of which (A)
72,043,500 shares will be issued and outstanding as of the First Closing, and
(B) assuming the Company does not issue shares of Series A Preferred Stock other
than as contemplated hereby, 96,307,972 shares of which will be issued and
outstanding after giving effect to the Second Closing;

                                (ii) 2,406,995 shares have been designated
Series B Preferred Stock (the "SERIES B PREFERRED STOCK"), of which (A) no
shares will be issued and outstanding as of the First Closing, and (B) assuming
the Company does not issue shares of Series B Preferred Stock other than as
contemplated hereby, 1,351,732 shares of which will be issued and outstanding
after giving effect to the Second Closing; and

                                (iii) 6,738,912 shares have been designated
Series C Preferred Stock (the "SERIES C PREFERRED STOCK," and together with the
Series A Preferred Stock and the Series B Preferred Stock, the "PREFERRED
STOCK") of which (A) no shares will be issued and outstanding as of the First
Closing, and (B) assuming the Company does not issue shares of Series C
Preferred Stock other than as contemplated hereby, 6,123,986 shares of which
will be issued and outstanding after giving effect to the Second Closing.

         The rights, privileges and preferences of the Preferred Stock will be
as stated in the Amended Certificate.

                                       12
<PAGE>   14

                           6.2.2 COMMON STOCK. 128,685,903 shares of common
stock, par value $.001 ("COMMON STOCK"), of which no shares are or will be
issued and outstanding after giving effect to the First Closing or the Second
Closing.

                           6.2.3 Immediately prior to the First Closing the
outstanding shares of Series A Preferred Stock are owned by the stockholders and
in the numbers specified in SCHEDULE IV hereto, and there are no other shares of
Stock issued and outstanding.

                           6.2.4 The outstanding shares of Series A Preferred
Stock are all duly and validly authorized and issued, fully paid and
nonassessable, and were issued in compliance with all applicable state and
federal laws concerning the issuance of securities.

                           6.2.5 Except for (i) the conversion privileges of the
Series A Preferred Stock, (ii) the right of certain Investors to acquire shares
of Series B Preferred Stock pursuant to the terms of that certain Series A and
Series B Preferred Stock Purchase Agreement dated May 26, 1999 between the
Company and the parties signatory thereto (as identified on SCHEDULE IV hereto)
and the conversion privileges of such Series B Preferred Stock, (iii) the rights
provided in Section 4 of the Investor Rights Agreement and the Amended Investor
Rights Agreement, (iv) t currently outstanding options to purchase 7,234,079
shares of Series A Preferred Stock and the right of optionees under the
Company's option plan adopted in 1998 and in effect on the date hereof (the
"1998 OPTION PLAN" which has been provided to each Investor) to receive
additional option grants and options to purchase 400,000 shares of Common Stock
granted to employees pursuant to the Company's 1999 Stock Option Plan (together
with the 1998 Option Plan, the "OPTION PLANS") and (v) the rights granted to the
Purchasers hereunder with respect to the conversion of the Notes into the
Preferred Shares and the conversion privileges of the Preferred Shares and
Additional Preferred Shares, there are not outstanding any options, warrants,
rights (including conversion or preemptive rights) or agreements for the
purchase or acquisition from the Company of any shares of its capital stock. In
addition to the aforementioned options, the Company has reserved an additional
17,234,079 shares of its Common Stock for purchase upon exercise of options to
be granted in the future under the Option Plans. Except as set forth on the
Schedule of Exceptions, the Company is not a party or subject to any agreement
or understanding, and, to the Company's knowledge, there is no agreement or
understanding between any Person, which affects or relates to the voting or
giving of written consents with respect to any security or by a director of the
Company

                  6.3 SUBSIDIARIES.

                           6.3.1 The Schedule of Exceptions sets forth (i) the
name of each Subsidiary of the Company; (ii) the number and type of outstanding
equity securities of each such Subsidiary and a list of the holders thereof;
(iii) the jurisdiction of organization of each such Subsidiary; (iv) the names
of the officers and directors, or managers and members, of each such Subsidiary;
and (v) the jurisdictions in which each Subsidiary is qualified or holds
licenses to do business as a foreign corporation.

                           6.3.2 Each Subsidiary of the Company is duly
organized, validly existing and in good standing under the laws of its state of
organization. Each Subsidiary of the Company is duly qualified to transact
business and is in good standing in each jurisdiction in

                                       13
<PAGE>   15

which the failure to so qualify would have a Material Adverse Effect on its
business or properties. The Company has provided each Purchaser or its counsel
with a certified copy of the charter documents of each of its Subsidiaries,
including all amendments thereto, as in effect on the date hereof.

                           6.3.3 The Company owns 100% of the outstanding equity
interests of each of KaSTAR 109.2 Acquisition, LLC, a Colorado limited liability
company, and KaSTAR 73 Acquisition, LLC, a Colorado limited liability company.

                  6.4 AUTHORIZATION. All corporate action on the part of the
Company, its officers, directors and stockholders necessary (a) for the
authorization, execution and delivery of (i) the Agreement, (ii) the Notes,
(iii) the Amended Investor Rights Agreement, (iv) the Amended Voting Agreement,
and (v) the Amended First Offer Agreement (which together with the Notes, the
Amended Investor Rights Agreement and the Amended Voting Agreement are
collectively referred to herein as the "OTHER TRANSACTION DOCUMENTS"), (b) to
authorize and adopt the Amendment to the Bylaws and the Amended Certificate, (c)
for the performance of all obligations of the Company hereunder and thereunder,
and (d) for the authorization (or reservation for issuance), sale and issuance
of the Notes, the Preferred Shares, the Additional Preferred Shares and the
Common Stock issuable upon conversion of the Preferred Shares and the Additional
Preferred Shares has been taken. This Agreement, the Notes, the Amended Investor
Rights Agreement, the Amended Voting Agreement, the Amended First Offer
Agreement, the Amendment to the Bylaws and the Amended Certificate (each when
effective) will constitute valid and legally binding obligations of the Company,
enforceable in accordance with their respective terms, except (i) as limited by
applicable bankruptcy, insolvency, reorganization, moratorium and other laws of
general application affecting enforcement of creditors' rights generally, (ii)
as limited by laws relating to the availability of specific performance,
injunctive relief or other equitable remedies, and (iii) to the extent the
indemnification provisions contained in the Investor Rights Agreement and the
Amended Investor Rights Agreement may be limited by applicable federal or state
securities laws.

                  6.5 VALID ISSUANCE OF SECURITIES. The Notes, the Preferred
Shares and the Additional Preferred Shares, when issued, sold and delivered in
accordance with the terms of this Agreement for the consideration expressed
herein, will be duly and validly issued, fully paid and nonassessable and will
be free of restrictions on transfer, other than restrictions on transfer under
this Agreement, the Investor Rights Agreement, the Amended Investor Rights
Agreement and under applicable state and federal securities laws. The Common
Stock issuable upon conversion of the Preferred Shares and the Additional
Preferred Shares purchased under this Agreement has been duly and validly
reserved for issuance and, upon issuance in accordance with the terms of the
Amended Certificate, will be duly and validly issued, fully paid and
nonassessable and will be free of restrictions on transfer, other than
restrictions on transfer under this Agreement and the Amended Investor Rights
Agreement and under applicable state and federal securities laws.

                  6.6 GOVERNMENTAL CONSENTS. Except as required by the HSR Act,
no consent, approval, order or authorization of, or registration, qualification,
designation, declaration or filing with, any foreign, federal, state or local
governmental authority on the part of the Company or any of its Subsidiaries is
required in connection with the consummation of the transactions contemplated by
this Agreement, except for: (a) such other filings required pursuant

                                       14
<PAGE>   16

to applicable federal and state securities laws and blue sky laws, which filings
will be effected within the required statutory period and (b) the FCC Approval
prior to the Second Closing.

                  6.7 OFFERING. Subject in part to the truth and accuracy of
each Purchaser's representations set forth in Section 7 of this Agreement, the
offer, sale and issuance of the Notes, the Preferred Shares and the Additional
Preferred Shares, as contemplated by this Agreement, are exempt from the
registration requirements of the Securities Act, and the qualification or
registration requirements of applicable blue sky laws. Neither the Company nor
any authorized agent acting on its behalf will take any action hereafter that
would cause the loss of such exemptions.

                  6.8 LITIGATION. There is no action, suit, proceeding or
investigation pending, or to the Company's knowledge, currently threatened
against the Company or any of its Subsidiaries that questions the validity of
this Agreement, the Other Transaction Documents, or the right of the Company to
enter into this Agreement or the Other Transaction Documents, or to consummate
the transactions contemplated hereby or thereby, or that might result, either
individually or in the aggregate, in any material adverse changes in the
business, assets or condition of the Company or any of its Subsidiaries,
financially or otherwise, or any change in the current equity ownership of the
Company or any of its Subsidiaries (other than governmental proceedings
affecting the satellite industry in general). Except for the Company's FCC
authorizations and other orders of the FCC, all of which are generally publicly
available (and all of the material provisions of which are publicly available),
neither the Company nor any of its Subsidiaries is a party or subject to the
provisions of any order, writ, injunction, judgment or decree of any court or
government agency or instrumentality. There is no FCC rule, regulation or order
currently in effect that, to the Company's knowledge, would result in or require
a material adverse change in the business or operations of the Company. There is
no action, suit, proceeding or investigation initiated by the Company or any of
its Subsidiaries currently pending or that the Company or any of its
Subsidiaries intends to initiate.

                  6.9 PROPRIETARY INFORMATION AGREEMENTS. Each employee, officer
and consultant of the Company (other than outside counsel and accountants to the
Company) or any of its Subsidiaries has executed a Proprietary Information and
Inventions Agreement, copies of which have been provided to the Purchasers or
their counsel. Neither the Company nor any of its Subsidiaries, after reasonable
investigation, is aware that any of its employees, officers or consultants are
in violation thereof, and the Company will use its reasonable efforts to prevent
any such violation.

                  6.10 PATENTS AND TRADEMARKS. To its knowledge, the Company and
each of its Subsidiaries possesses all patents, patent rights, trademarks,
trademark rights, service marks, service mark rights, trade names, trade name
rights and copyrights necessary for its business without any conflict with or
infringement of the valid rights of others and the lack of which could
materially and adversely affect the operations or condition, financial or
otherwise, of the Company or any of its Subsidiaries, and neither the Company
nor any of its Subsidiaries has received any notice of infringement upon or
conflict with the asserted rights of others. The Company and each of its
Subsidiaries has a valuable body of trade secrets, including know-how, concepts,
computer programs and other technical data (the "PROPRIETARY INFORMATION") for
the development, manufacture and sale of its products. To its knowledge, the
Company and each of

                                       15
<PAGE>   17

its Subsidiaries has the right to use the Proprietary Information free and clear
of any rights, liens, encumbrances or claims of others, except that the
possibility exists that other persons may have independently developed trade
secrets or technical information similar or identical to those of the Company or
any of its Subsidiaries. Neither the Company nor any of its Subsidiaries is
aware of any such independent development nor of any misappropriation of its
Proprietary Information. Neither the Company nor any of its Subsidiaries is
aware that any of its employees is obligated under any contract (including
licenses, covenants or commitments of any nature) or other agreement, or subject
to any judgment, decree or order of any court or administrative agency, that
would interfere with the use of his or her best efforts to promote the interests
of the Company or any of its Subsidiaries or that would conflict with the
Company's or any of its Subsidiary's business. The Company does not believe it
is or will be necessary to utilize any inventions of any of its or any of its
Subsidiary's employees (or people it currently intends to hire) made prior to
their employment by the Company or any of its Subsidiaries.

                  6.11 COMPLIANCE WITH OTHER INSTRUMENTS. Neither the Company
nor any of its Subsidiaries is in violation in any material respect of any
provision of its Amended Certificate or Bylaws, or Articles of Organization or
Operating Agreement, as the case may be, nor, to its knowledge, in any material
respect of any instrument, judgment, order, writ, decree, authorization, license
or contract, statute, rule or regulation to which the Company or any of its
Subsidiaries is subject and a violation of which would have a Material Adverse
Effect on the condition, financial or otherwise, or operations of the Company or
any of its Subsidiaries. The execution, delivery and performance of this
Agreement or the Other Transaction Documents and the consummation of the
transactions contemplated hereby and thereby will not result in any such
violation, or be in conflict with or constitute, with or without the passage of
time and giving of notice, either a default under any such provision or an event
that results in the creation of any lien, charge or encumbrance upon any assets
of the Company or any of its Subsidiaries or the suspension, revocation,
impairment, forfeiture or nonrenewal of any material permit, license,
authorization or approval applicable to the Company or any of its Subsidiaries,
or its business or operations or any of its assets or properties.

                  6.12 AGREEMENTS; ACTION. Except for agreements explicitly
contemplated hereby, there are no agreements, understandings or proposed
transactions between the Company or any of its Subsidiaries and any of its
officers, directors, affiliates or any affiliate thereof.

                           6.12.1 There are no agreements, understandings,
instruments, contracts, proposed transactions, judgments, orders, writs or
decrees to which the Company or any of its Subsidiaries is a party or by which
it is bound that may involve (i) obligations (contingent or otherwise) of, or
payments to the Company or any of its Subsidiaries, in excess of $10,000, other
than obligations of, or payments to, the Company or any of its Subsidiaries
arising from purchase or sale agreements entered into in the ordinary course of
business, (ii) the license of any patent, copyright, trade secret or other
proprietary right to or from the Company or any of its Subsidiaries, (iii)
provisions restricting or affecting the development, manufacture or distribution
of the Company's or any of its Subsidiaries' products or services, or (iv)
indemnification by the Company or any of its Subsidiaries with respect to
infringements of proprietary rights, other than indemnification obligations
arising from purchase or sale agreements entered into in the ordinary course of
business).

                                       16
<PAGE>   18

                           6.12.2 Neither the Company nor any of its
Subsidiaries has (i) except to the extent indicated on the Financial Statements,
as defined below (including notes thereto), declared or paid any dividends or
authorized or made any distribution upon or with respect to any class or series
of its capital stock or other equity interests, (ii) incurred any indebtedness
for money borrowed or any other liabilities individually in excess of $10,000
or, in the case of indebtedness and/or liabilities individually less than
$10,000, in excess of $50,000 in the aggregate, (iii) made any loans or advances
to any Person, other than ordinary advances for travel expenses, or (iv) sold,
exchanged or otherwise disposed of any of its assets or rights, other than the
sale of its inventory in the ordinary course of business.

                           6.12.3 For the purposes of Sections 6.12.1 and 6.12.2
above, all indebtedness, liabilities, agreements, understandings, instruments,
contracts and proposed transactions involving the same Person (including Persons
the Company has reason to believe are affiliated with one another) shall be
aggregated for the purpose of meeting the individual minimum dollar amounts of
such Sections.

                           6.12.4 Neither the Company nor any of its
Subsidiaries has engaged in the past three (3) months in any discussion with any
representative of any Person regarding (i) the consolidation or merger of the
Company or any of its Subsidiaries with or into any such Person, (ii) the sale,
conveyance or disposition of all or substantially all of the assets of the
Company or any of its Subsidiaries or a transaction or series of related
transactions in which more than fifty percent (50%) of the voting power of the
Company or any of its Subsidiaries is disposed of, or (iii) any other form of
acquisition, liquidation, dissolution or winding up of the Company or any of its
Subsidiaries.

                           6.12.5 All of the contracts, agreements and
instruments set forth on the Schedule of Exceptions pursuant to this Section
6.12 are valid, binding and enforceable in accordance with their respective
terms. The Company has performed all material obligations required to be
performed by it and is not in default under or in breach of nor in receipt of
any claim of default or breach under any contract, agreement or instrument and
the Company does not have any present expectation or intention of not fully
performing all such obligations. No event has occurred which with the passage of
time or the giving of notice or both would result in a default, breach or event
of noncompliance by the Company under any contract, agreement or instrument. The
Company has no knowledge of any breach or anticipated breach by the other
parties to any contract, agreement, instrument or commitment.

                           6.12.6 The Purchasers or their counsel have been
supplied with a true and correct copy of each of the written instruments, plans,
contracts and agreements and an accurate description of each of the oral
arrangements, contracts and agreements that are referred to on the Schedule of
Exceptions pursuant to this Section 6.12, together with all amendments, waivers
or other changes thereto.

                  6.13 RELATED-PARTY TRANSACTIONS. Except as disclosed in the
Financial Statements (including the notes thereto), no employee, officer or
director of the Company or any of its Subsidiaries or member of his or her
immediate family is indebted to the Company or any of its Subsidiaries, nor is
the Company or any of its Subsidiaries indebted (or committed to make

                                       17
<PAGE>   19

loans or extend or guarantee credit) to any of them. To the best of the
Company's knowledge, none of such persons has any direct or indirect ownership
interest in any Person with which the Company or any of its Subsidiaries is
affiliated or with which the Company or any of its Subsidiaries has a business
relationship, or any Person that competes with the Company or any of its
Subsidiaries, except that employees, officers or directors of the Company or any
of its Subsidiaries and members of their immediate families may own stock in
publicly traded companies that may compete with the Company. No member of the
immediate family of any officer or director of the Company or any of its
Subsidiaries is directly or indirectly interested in any material contract with
the Company or any of its Subsidiaries.

                  6.14 FINANCIAL STATEMENTS. The Company has delivered to each
Purchaser its audited financial statements (balance sheet and statement of
operations, statement of stockholders' equity and statement of cash flows,
including notes thereto) at December 31, 1998 and for the fiscal year then
ended, and its unaudited financial statements (balance sheet and statement of
operations) as, at and for the nine (9) month period ended September 30, 1999
(the "FINANCIAL STATEMENTS"). The Financial Statements have been prepared in
accordance with generally accepted accounting principles applied on a consistent
basis throughout the periods indicated and with each other, except that
unaudited Financial Statements may not contain all footnotes required by
generally accepted accounting principles. The Financial Statements fairly
present the financial condition and operating results of the Company and any
Subsidiaries as of the dates, and for the periods, indicated therein, subject in
the case of unaudited Financial Statements to normal year-end audit adjustments.
Except as set forth in the Financial Statements, neither the Company nor any of
its Subsidiaries has any material liabilities, contingent or otherwise, other
than (i) liabilities incurred in the ordinary course of business subsequent to
December 31, 1998 and (ii) obligations under contracts and commitments incurred
in the ordinary course of business and not required under generally accepted
accounting principles to be reflected in the Financial Statements, which, in
both cases, individually or in the aggregate, are not material to the financial
condition or operating results of the Company or any of its Subsidiaries. Except
as disclosed in the Financial Statements, neither the Company nor any of its
Subsidiaries is a guarantor or indemnitor of any indebtedness of any other
Person. The Company maintains and will continue to maintain a standard system of
accounting established and administered in accordance with generally accepted
accounting principles applied on a basis consistent with past practices, except
to the extent disclosed therein.

                  6.15 CHANGES. Since December 31, 1998 there has not been:

                           6.15.1 any change in the assets, liabilities,
financial condition or operating results of the Company or any of its
Subsidiaries from that reflected in the Financial Statements, except changes in
the ordinary course of business that have not been, in the aggregate, materially
adverse;

                           6.15.2 any damage, destruction or loss, whether or
not covered by insurance, materially and adversely affecting the assets,
properties, financial condition, operating results or business of the Company or
any of its Subsidiaries;

                           6.15.3 any waiver by the Company or any of its
Subsidiaries of a valuable right or of a material debt owed to it;

                                       18
<PAGE>   20

                           6.15.4 any satisfaction or discharge of any lien,
claim or encumbrance or payment of any obligation by the Company or any of its
Subsidiaries, except in the ordinary course of business and that is not material
to the assets, properties, financial condition, operating results or business of
the Company or any of its Subsidiaries;

                           6.15.5 any material change or amendment to a material
contract or arrangement by which the Company or any of its Subsidiaries or any
of its assets or properties is bound or subject;

                           6.15.6 any material change in any compensation
arrangement or agreement with any employee; or

                           6.15.7 any agreement or commitment by the Company or
any of its Subsidiaries to do any of the things described in this Section 6.15.

                  6.16 TAX RETURNS. The Company and each of its Subsidiaries
have timely filed all tax returns (federal, state and local) required to be
filed by it and all Taxes (as defined below), assessments or other governmental
charges imposed upon the Company or any of its Subsidiaries, or upon any of the
assets, income or franchises of the Company or any of its Subsidiaries, have
been timely paid or, if not yet payable, are adequately accrued on the Company's
books and records. Neither the Company nor any of its Subsidiaries has been
advised that any of its returns have been or are being audited. "TAX" or "TAXES"
means any federal, state, local or foreign income, gross receipts, license,
payroll, employment, excise, severance, stamp, occupation, premium, property,
windfall, profits, environmental, customs, capital stock, franchise, employees'
income withholding, foreign or domestic withholding, social security,
unemployment, disability, real property, personal property, sales, use,
transfer, value added, alternative or add-on minimum or other similar tax,
governmental fee, governmental assessment or governmental charge of any kind
whatsoever, including any interest, penalties or addition to Tax or additional
amounts with respect to the foregoing.

                  6.17 PERMITS. The Company and each of its Subsidiaries has all
franchises, permits, licenses, certifications, authorizations and any similar
authority (including, without limitation, all authorizations from the FCC)
necessary for the conduct of its business, the lack of which could materially
and adversely affect the business, properties or financial condition of the
Company or any of its Subsidiaries (other than additional authorizations for
inter-satellite links described in the order granting the Company's FCC
authorizations and that are the subject of pending rule-making proceedings
affecting the satellite industry in general). Neither the Company nor any of its
Subsidiaries is in default in any material respect under any of such franchises,
permits, licenses, certifications, authorizations or other similar authority.
The Company and each of its Subsidiaries has timely filed all reports, tariffs
and other documents required to be filed with the FCC as a condition of the
Company's authorization to construct, launch and operate geostationary Ka-band
satellites, and the FCC has not established for the Company or any of its
Subsidiaries an implementation milestone schedule concerning the construction,
launch or operation of the Company's proposed satellites or other condition or
requirement of such authorization. There is no FCC rule or contractual provision
by which the Company is bound, compliance with which is required as of the date
hereof, that materially jeopardizes the Company's planned launch for the
Company's proposed satellites. There is no

                                       19
<PAGE>   21

pending, or to the Company's knowledge threatened, proceeding to materially and
adversely modify, revoke or rescind the Company's or any Subsidiary's FCC
authorizations, and there is no pending proceeding to reconsider or revoke the
Company's or any Subsidiary's FCC authorizations.

                  6.18 ENVIRONMENTAL AND SAFETY LAWS. Neither the Company nor
any of its Subsidiaries is in violation of any applicable statute, law or
regulation relating to the environment or occupational health and safety, and to
its knowledge, no material expenditures are or will be required in order to
comply with any such existing statute, law or regulation.

                  6.19 DISCLOSURE. The Company has fully provided each Purchaser
with all the information that such Purchaser has requested for deciding whether
to purchase the Notes, the Preferred Shares and the Additional Preferred Shares
and all information that the Company believes is reasonably necessary to enable
such Purchaser to make such decision. Neither this Agreement (including all the
exhibits and schedules hereto) nor any other statements or certificates made or
delivered in connection herewith, taken as a whole, contains any untrue
statement of a material fact or omits to state a material fact necessary to make
the statements herein or therein not misleading in light of the circumstances
under which they were made.

                  6.20 MODIFICATION OF FCC AUTHORIZATIONS. No modification or
amendment of, or other change in, the FCC authorizations held by the Company or
its Subsidiaries is necessary for the Company to provide the communications
services set forth in the Business Plan (defined in Section 6.21 below). The
absence of any modification or amendment of, or other change in, such FCC
authorization will not result in or require a material adverse change in the
business or operations of the Company or its Subsidiaries.

                  6.21 BUSINESS PLAN. The Business Plan dated May 1999,
previously delivered to each Purchaser (the "BUSINESS PLAN") has been prepared
in good faith by the Company and, taken as a whole, does not, to the Company's
knowledge, contain any untrue statement of a material fact nor does it omit to
state a material fact necessary to make the statements made therein not
misleading, except that with respect to projections contained in the Business
Plan, the Company represents only that such projections were prepared in good
faith and that the Company reasonably believes there is a reasonable basis for
such projections.

                  6.22 REGISTRATION RIGHTS. Except as provided in the Investor
Rights Agreement and the Amended Investor Rights Agreement, the Company has not
granted or agreed to grant any registration rights, including piggyback rights,
to any Person.

                  6.23 CORPORATE DOCUMENTS; MINUTE BOOKS. Except for amendments
necessary to satisfy representations and warranties or conditions contained
herein (the forms of which amendments have been approved by the Purchasers), the
Amended Certificate and Bylaws, and the Articles of Organization and Operating
Agreement of each of its Subsidiaries, are in the form previously provided to
the Purchasers or their counsel. The minute books of the Company provided to the
Purchasers or their counsel contain a complete summary of all meetings of
directors and stockholders since the time of incorporation and reflect all
transactions referred to in such minutes accurately in all material respects,
and the records of each of its Subsidiaries provided to the Purchasers or their
counsel contain a complete summary of all

                                       20
<PAGE>   22

meetings of any managers and members since the time of organization and reflect
all transactions referred to in such records accurately in all material
respects.

                  6.24 TITLE TO PROPERTY AND ASSETS. The property and assets of
the Company and each of its Subsidiaries are owned by the Company or the
Subsidiary, as the case may be, free and clear of all liens, mortgages, loans
and encumbrances, except (i) as reflected in the Financial Statements, (ii) for
statutory liens for the payment of current Taxes that are not yet delinquent,
(iii) for liens, encumbrances and security interests that arise in the ordinary
course of business and minor defects in title, none of which, individually or in
the aggregate, materially impair the Company's or any of its Subsidiaries'
ownership or use of such property or assets and (iv) that the authorizations
granted by the FCC to the Company to construct, launch and operate Ka-band
geostationary satellites at 109.2 W.L. and 73 W.L. do not confer upon the
Company any property rights in such orbital locations or spectrum frequencies
but do grant the Company authority to use such orbital locations to the full
extent granted by the authorizations. With respect to the property and assets it
leases, the Company and each of its Subsidiaries is in material compliance with
such leases and, to its knowledge, holds a valid leasehold interest free of any
liens, claims or encumbrances, subject to clauses (i)-(iii).

                  6.25 INSURANCE. The Company has fire and casualty insurance
policies with such coverages in amounts (subject to reasonable deductibles)
customary for companies similarly situated.

                  6.26 EMPLOYEE BENEFIT PLANS. Neither the Company nor any of
its Subsidiaries has any Employee Benefit Plan as defined in the Employee
Retirement Income Security Act of 1974.

                  6.27 LABOR AGREEMENTS AND ACTIONS. Neither the Company nor any
of its Subsidiaries is bound by or subject to (and none of its assets or
properties is bound by or subject to) any written or oral, express or implied,
contract, commitment or arrangement with any labor union, and no labor union has
requested or, to the Company's knowledge, has sought to represent any of the
employees, representatives or agents of the Company or any Subsidiary. There is
no strike or other labor dispute involving the Company or any Subsidiary
pending, or to the Company's knowledge, threatened, that could have a Material
Adverse Effect on the assets, properties, financial condition, operating results
or business of the Company or any Subsidiary, nor is the Company aware of any
labor organization activity involving its employees. The Company is not aware
that any officer or key employee, or that any group of key employees, intends to
terminate their employment with the Company or any of its Subsidiaries, nor does
the Company or any of its Subsidiaries have a present intention to terminate the
employment of any of the foregoing. The employment of each officer and employee
of the Company or any of its Subsidiaries is terminable at the will of the
Company or its Subsidiary, as the case may be. Neither the Company nor any of
its Subsidiaries is a party to or bound by any currently effective employment
contract, deferred compensation agreement, bonus plan, incentive plan, profit
sharing plan, retirement agreement or other employee compensation agreement. To
its knowledge, the Company and each of its Subsidiaries has complied in all
material respects with all applicable state and federal equal employment
opportunity and other laws related to employment.

                                       21
<PAGE>   23

                  6.28 NET OPERATING LOSS CARRYFORWARD. The information
contained in the Schedule of Exceptions regarding the application of Section 382
of the Code to the Company's federal net operating loss carryforward is true and
correct to the Company's knowledge.

                  6.29 YEAR 2000 COMPLIANCE. To its knowledge, all of the
Company's and any of its Subsidiary's internal computer systems are Year 2000
Compliant, except that neither the Company nor any of its Subsidiaries makes
such representation with respect to off-the-shelf software that is used in the
Company's or any of its Subsidiaries' internal computer systems the failure or
malfunctioning of which would not have a Material Adverse Effect on the Company
or any of its Subsidiaries. To its knowledge, after due inquiry, neither the
Company nor any of its Subsidiaries is relying on the products or services of
any third party whose systems are not Year 2000 Compliant where the failure to
so comply would reasonably be expected to have a Material Adverse Effect on the
Company or any of its Subsidiaries. Except as set forth in the Schedule of
Exceptions, neither the Company nor any of its Subsidiaries has made any other
representations or warranties that any product or service sold, licensed,
rendered or otherwise provided by the Company or any of its Subsidiaries is Year
2000 Compliant. For purposes of this Agreement, "YEAR 2000 COMPLIANT" shall mean
that such products and data and information systems and any such data,
information or other files or software it uses, individually and in combination,
completely and accurately record, store, process, calculate and present data
involving dates before, on or after January 1, 2000; specifically: (i) no value
for a current date will cause any interruption in operation; (ii) date-based
functionality will behave consistently when dealing with dates before, on or
after January 1, 2000; (iii) no abnormal endings or incorrect results will be
produced when working with dates before, on or after January 1, 2000; (iv) in
all interfaces and data storage, the century will be specified explicitly and
will be unambiguously derived; and (v) year 2000 will be recognized as a leap
year.

                  6.30 ELIGIBILITY TO HOLD PREFERRED STOCK. The Company is not
aware of any fact which, upon consummation of the transactions contemplated
hereby, would: (a) make any of its current stockholders ineligible or
unqualified to hold shares of the Preferred Stock under any material statute,
law, rule, regulation, instrument, order, judgment, writ, decree or contract,
including but not limited to the Communications Act of 1934, as amended, and the
rules and regulations of the FCC; or (b) render the Company ineligible or
unqualified to hold the authorizations granted to it by the FCC or, in the
Company's reasonable judgment, jeopardize the Company's ability to hold such
authorizations as a result of foreign ownership, criminal convictions or other
ground for forfeiture, cancellation or revocation under the rules and
regulations of the FCC or the imposition of a monetary forfeiture.

         7. REPRESENTATIONS AND WARRANTIES OF EACH PURCHASER. Each Purchaser,
severally and not jointly, hereby represents, warrants and covenants that:

                  7.1 AUTHORIZATION. Such Purchaser has full power and authority
to enter into this Agreement, the Amended Investor Rights Agreement, the Amended
Voting Agreement and the Amended First Offer Agreement and each such agreement
constitutes its valid and legally binding obligation, enforceable in accordance
with their respective terms, except (i) as limited by applicable bankruptcy,
insolvency, reorganization, moratorium and other laws of general application
affecting enforcement of creditors' rights generally, (ii) as limited by laws
relating to the availability of specific performance, injunctive relief or other
equitable remedies, and (iii) to

                                       22
<PAGE>   24

the extent the indemnification provisions contained in the Amended Investor
Rights Agreement may be limited by applicable federal or state securities laws.

                  7.2 PURCHASE ENTIRELY FOR OWN ACCOUNT. This Agreement is made
with such Purchaser in reliance upon such Purchaser's representation to the
Company, which by such Purchaser's execution of this Agreement such Purchaser
hereby confirms, that the Securities will be acquired for investment for such
Purchaser's own account, not as a nominee or agent, and not with a view to the
resale or distribution of any part thereof, and that such Purchaser has no
present intention of selling, granting any participation in or otherwise
distributing the same. By executing this Agreement, such Purchaser further
represents that such Purchaser does not have any contract, undertaking,
agreement or arrangement with any Person to sell, transfer or grant
participations to such Person or to any third Person, with respect to any of the
Securities.

                  7.3 DISCLOSURE OF INFORMATION. Such Purchaser believes it has
received all the information it considers necessary or appropriate for deciding
whether to purchase the Securities. Such Purchaser further represents that it
has had an opportunity to ask questions and receive answers from the Company
regarding the terms and conditions of the offering of the Securities and the
business, properties, prospects and financial condition of the Company. Except
to the extent that any Purchaser has actual knowledge that any representations
or warranties of the Company are untrue, the foregoing does not limit or modify
the representations and warranties of the Company in Section 6 of this Agreement
or the right of such Purchaser to rely thereon.

                  7.4 INVESTMENT EXPERIENCE. Such Purchaser is an investor in
securities of companies in the development stage and acknowledges that it is
able to fend for itself, can bear the economic risk of its investment, and has
such knowledge and experience in financial or business matters that it is
capable of evaluating the merits and risks of the investment in the Securities.

                  7.5 ACCREDITED INVESTOR. Such Purchaser is an "accredited
investor" within the meaning of Securities and Exchange Commission ("SEC") Rule
501 of Regulation D, as presently in effect. If other than an individual, such
Purchaser also represents that it has not been organized for the purpose of
acquiring the Securities, or if it was organized for such purpose, each of its
equity owners is an "accredited investor" within the meaning of SEC Rule 501 of
Regulation D, as presently in effect.

                  7.6 RESTRICTED SECURITIES. Such Purchaser understands that the
Securities it is purchasing are characterized as "restricted securities" under
the federal securities laws inasmuch as they are being acquired from the Company
in a transaction not involving a public offering and that under such laws and
applicable regulations such Securities may be resold without registration under
the Securities Act only in certain limited circumstances. In the absence of an
effective registration statement covering the Securities or an available
exemption from registration under the Securities Act, the Securities must be
held indefinitely. In this connection, such Purchaser represents that it is
familiar with SEC Rule 144, as presently in effect, and understands the resale
limitations imposed thereby and by the Securities Act, including without
limitation, the fact that the Purchasers may not be able to sell the Securities
pursuant to Rule 144 unless current information about the Company is available
to the public. Such information is not now available and the Company has no
present plans to make such information available.

                                       23
<PAGE>   25

                  7.7 RESTRICTIONS ON TRANSFER.

                           7.7.1 Each Purchaser agrees not to make any
disposition of all or any portion of the Securities unless and until:

                           (a) There is then in effect a registration statement
under the Securities Act covering such proposed disposition and such disposition
is made in accordance with such registration statement; or

                           (b) (i) The transferee has agreed in writing to be
bound by the terms of this Agreement and the Amended Investor Rights Agreement,
(ii) such Purchaser shall have notified the Company of the proposed disposition
and shall have furnished the Company with a detailed statement of the
circumstances surrounding the proposed disposition, and (iii) if reasonably
requested by the Company, such Purchaser shall have furnished the Company with
an opinion of counsel, reasonably satisfactory to the Company, that such
disposition will not require registration of such shares under the Securities
Act; provided, however, that it is agreed that the Company will not require
opinions of counsel for transactions made pursuant to Rule 144 except in unusual
circumstances.

                           7.7.2 In addition to the requirements of Section
7.7.1 above , prior to any disposition of all or any portion of the Securities,
the Company shall have received any consents or approvals of the FCC as, in the
reasonable opinion of special regulatory counsel to the Company, may be
necessary prior to effectuating such disposition and all other governmental
regulatory requirements shall have been satisfied.

                           7.7.3 Notwithstanding the provisions of Section 7.7.1
above, no such registration statement or opinion of counsel shall be necessary
for a transfer by a Purchaser which is (a) a partnership to or among its
partners or former partners in accordance with partnership interests, (b) a
corporation to an Affiliate or to its shareholders in accordance with their
interest in the corporation, (c) a limited liability company to its members or
former members in accordance with their interest in the limited liability
company, or (d) to the Purchaser's family member or trust for the benefit of an
individual Person, provided each transferee agrees in writing to be subject to
the terms of this Agreement to the same extent as if he were an original
Purchaser hereunder.

                           7.7.4 Each certificate representing Securities shall
(unless otherwise permitted by the provisions of this Agreement) be stamped or
otherwise imprinted with a legend substantially similar to the following (in
addition to any legend required under applicable state securities laws or as
provided elsewhere in this Agreement):

                  THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED
                  UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT") AND
                  MAY NOT BE OFFERED, SOLD OR OTHERWISE TRANSFERRED, ASSIGNED,
                  PLEDGED OR HYPOTHECATED UNLESS AND UNTIL REGISTERED UNDER THE
                  ACT OR UNLESS THE COMPANY HAS RECEIVED AN OPINION OF

                                       24
<PAGE>   26

                  COUNSEL REASONABLY SATISFACTORY TO THE COMPANY AND ITS COUNSEL
                  THAT SUCH REGISTRATION IS NOT REQUIRED.

                           7.7.5 The Company shall be obligated to reissue
promptly unlegended certificates at the request of any Purchaser if the
Purchaser shall have obtained an opinion of counsel (which counsel may be
counsel to the Company) reasonably acceptable to the Company to the effect that
the securities proposed to be disposed of may lawfully be so disposed of without
registration, qualification or legend.

                           7.7.6 Any legend endorsed on an instrument pursuant
to applicable state securities laws and the stop-transfer instructions with
respect to such securities shall be removed upon receipt by the Company of an
order of the appropriate blue sky authority authorizing such removal.

                  7.8 TAX ADVISORS. Such Purchaser has reviewed with such
Purchaser's own tax advisors the federal, state and local tax consequences of
this investment, where applicable, and the transactions contemplated by this
Agreement. Each such Purchaser is relying solely on such advisors and not on any
statements or representations of the Company or any of its agents and
understands that each such Purchaser (and not the Company) shall be responsible
for such Purchaser's own tax liability that may arise as a result of this
investment or the transactions contemplated by this Agreement.

                  7.9 ELIGIBILITY TO HOLD PREFERRED STOCK. Subject to Schedule
7.9 to this Agreement, as of the date of this Agreement, to such Purchaser's
actual knowledge, without investigation, and based on applicable laws in effect
on the date of this Agreement, (a) such Purchaser is not ineligible or
unqualified to hold the Securities to be issued to such Purchaser pursuant to
this Agreement under any statute, law, rule, regulation, instrument, order,
judgment, writ, decree or contract, including but not limited to the
Communications Act of 1934, as amended, and the rules and regulations of the
FCC, and (b) issuance of the Securities to be issued to such Purchaser pursuant
to this Agreement will not render the Company ineligible or unqualified to hold
the authorizations granted to it by the FCC or, in such Purchaser's reasonable
judgment, jeopardize the Company's ability to hold such authorizations as a
result of foreign ownership, criminal convictions or other ground for
forfeiture, cancellation, revocation under the rules and regulations of the FCC
or the imposition of a monetary forfeiture, in the case of either (a) or (b)
other than the FCC Approval required as a condition precedent to the Parties'
obligations to consummate the Second Closing.

         8. COVENANTS.

                  8.1 AFFIRMATIVE COVENANTS OF THE COMPANY. The Company
covenants and agrees that, between the date of this Agreement and the later of
the date of the Second Closing and the Maturity Date of the Notes (including any
Excluded Notes), provided that the covenants set forth in Sections 8.1.6,
8.1.11, and 8.1.12, shall expire on the earlier of the date of the Second
Closing and the payment of all of the Notes, the Company shall, and shall cause
each of its Subsidiaries to:

                                       25
<PAGE>   27

                           8.1.1 ORDINARY COURSE OPERATIONS. Operate the
Company's business only in the ordinary course.

                           8.1.2 CORPORATE EXISTENCE. At all times cause to be
done all things reasonably necessary to maintain, preserve and renew its
corporate existence and all material licenses, authorizations and permits
necessary to the conduct of its businesses.

                           8.1.3 PROPERTIES. Maintain and keep its properties in
good repair, working order and condition, and from time to time make all
necessary or desirable repairs, renewals and replacements, so that its
businesses may be properly and advantageously conducted in all material respects
at all times.

                           8.1.4 COMPLIANCE WITH LAWS. Comply with all
applicable laws, rules and regulations of all governmental authorities, the
violation of which could reasonably be expected to have a Material Adverse
Effect on its business or properties.

                           8.1.5 BOOKS AND RECORDS. Maintain proper books of
record and account which present fairly in all material respects its financial
condition and results of operations and make provisions on its financial
statements for all such proper reserves as in each case are required in
accordance with generally accepted accounting principles, consistently applied.

                           8.1.6 RESERVATION OF STOCK. Reserve and keep
available, solely for issuance and delivery in connection with this Agreement,
all Preferred Stock and Common Stock issuable pursuant to this Agreement.

                           8.1.7 TAXES AND OTHER LIABILITIES. Pay and discharge
when due any and all indebtedness, obligations, assessments and taxes, except as
may be subject to good faith contest or as to which a bona fide dispute may
exist that is being diligently pursued.

                           8.1.8 REPORTS. Provide to each Purchaser (including
any person holding an Excluded Note) the financial statements and other reports
required to be delivered to Major Investors pursuant to and at the times
provided for in Section 3.1 of the Investor Rights Agreement.

                           8.1.9 NOTIFICATION OF CERTAIN EVENTS. Notify each
Purchaser, as soon as practicable, of any matters with respect to which the
Company is required to provide notice to Major Investors pursuant to and at the
times provided for in Section 3.2 of the Investor Rights Agreement and of any
fact, event, circumstance or action which, if known on the date of this
Agreement, would have been required to be disclosed to the Purchasers (including
any Person holding an Excluded Note) pursuant to this Agreement or the existence
or occurrence of which would cause any of the Company's representations or
warranties under this Agreement not to be correct or complete.

                           8.1.10 INSPECTION RIGHTS. Provide to each Purchaser
(including any Person holding an Excluded Note) the inspection rights that are
provided to Major Investors pursuant to Section 3.3 of the Investor Rights
Agreement.

                                       26
<PAGE>   28

                           8.1.11 CLOSING CONDITIONS. Use its best efforts to
satisfy, or cause to be satisfied, the conditions to the First Closing and
Second Closing set forth in Section 9 below.

                           8.1.12 BOARD VISITATION RIGHTS. From and after the
Effective Date and until the earlier of the Second Closing and payment of all
obligations due under the Note issued to Liberty hereunder, Liberty shall have
the right to appoint and replace one Person to attend, in person or by
telephone, any and all meetings of the Board, whether held in person or by
telephone conference call ("LIBERTY'S DESIGNEE"). Liberty's Designee shall have
the right to attend, in person or by telephone, any and all meetings of the
Board (and committees thereof, including any executive sessions of the Board or
any such committees), whether held in person or by telephone conference call,
and to receive (a) notice of all such meetings, copies of the minutes of such
meetings, copies of all written consents in lieu of meetings of the Board and
all other written communications, materials and information furnished to members
of the Board by the Company and by the Company to members of the Board, in all
cases on the same basis and at the same times as the members of the Board. .

                  8.2 NEGATIVE COVENANTS OF THE COMPANY. The Company covenants
and agrees that, between the date of this Agreement and the date of the Second
Closing (or, with respect to Sections 8.2.1 and 8.2.2, the Maturity Date of the
Notes (including any Excluded Notes), if later), the Company will not, and will
not permit any of its Subsidiaries to:

                           8.2.1 ABILITY TO PERFORM OBLIGATIONS. Become subject
to, or permit any of its Subsidiaries to become subject to (including, without
limitation, by way of amendment to or modification of), any agreement or
instrument which by its terms would (under any circumstances) restrict the
Company's right to perform the provisions of this Agreement, the Notes or the
Other Transaction Documents.

                           8.2.2 RESTRICTED PAYMENTS. Make any dividend or other
distribution on any class of its capital stock or LLC interests, as the case may
be, other than distributions by a Subsidiary to the Company or to a wholly owned
Subsidiary of the Company.

                           8.2.3 AMEND OTHER TRANSACTION DOCUMENTS. Amend the
Investor Rights Agreement (other than as amended and restated by the Amended and
Restated Investor Rights Agreement), the Right of First Offer and Co-Sale
Agreement (except as amended and restated by the Amended First Offer Agreement)
or the Voting Agreement (except as amended by the Amended Voting Agreement), in
manner that adversely affects the rights of the Investors.

                           8.2.4 AMENDING THE AMENDED CERTIFICATE AND/OR BYLAWS.
Amend the Amended Certificate or Bylaws in any manner that adversely affects the
rights associated with the Securities.

                  8.3 HSR FILINGS.

                           8.3.1 Each of the Company and each Purchaser who is
required to file an HSR Notification and Report Forms ("HSR REPORT") by reason
of its investment hereunder shall (a) file an HSR Report Form within seven (7)
Business Days immediately following the

                                       27
<PAGE>   29

Effective Date, (b) coordinate the filing of its HSR Report with the filing of
the HSR Reports by the other Parties hereto so as to present all HSR Reports to
the Federal Trade Commission (the "FTC") and the Department of Justice (the
"DOJ") at the time agreed to by Parties, (c) use commercially reasonable efforts
to avoid substantial errors or inconsistencies in the description of the
transaction, (d) use commercially reasonable efforts to respond, as promptly as
reasonably practicable, to any inquiries from the FTC or Antitrust Division of
the FTC for additional information or documentation and to respond, as promptly
as reasonably practicable, to all inquiries and requests received from any other
governmental authority in connection with antitrust matters; provided, however,
that if any Purchaser determines in its reasonable judgment (based on the
investment it is making in the Company under this Agreement) that any such
request for information is unduly burdensome, then such Purchaser shall have the
right to terminate this Agreement as to such Purchaser by providing written
notice of termination to the Company not more than ten calendar days after such
Purchaser's receipt of any inquiry from the FTC or Antitrust Division of the FTC
(or such later date as the Company and such Purchaser shall agree). In such
event, the Maturity Date of the Note held by such Purchaser shall become the
earlier of October 19, 2000 and 180 days after the Company's receipt of written
notice of termination pursuant to this Section 8.3. The Parties shall use their
respective commercially reasonable efforts to overcome any objections that may
be raised by the FTC or DOJ or any other governmental entity. Notwithstanding
anything herein to the contrary, no Party shall be required to agree to any
prohibition, limitation or other requirement that would (i) prohibit or limit
the ownership or operation by such Party or any of its Affiliates of any portion
of the business or assets of such Party or any of its Affiliate or compel such
Party or any of its Affiliates to dispose of or hold separate any portion of its
business or assets or (ii) prohibit such Party or any of its Affiliates from
effectively controlling, in any material respect, the business or operations of
such Party or any of its Affiliates.

                  8.3.2 The Company hereby agrees to reimburse each Purchaser
that is required to file an HSR Report for fifty percent (50%) of any HSR filing
fees payable by such Purchaser with respect to the filing of such HSR Report.

         9. CONDITIONS OF PURCHASERS' AND COMPANY'S OBLIGATIONS AT CLOSINGS.

                  9.1 CONDITIONS OF EACH PURCHASER'S OBLIGATIONS AT THE FIRST
CLOSING. The obligations of each Purchaser under Sections 2 and 4.1 above of
this Agreement are subject to the fulfillment on or before the First Closing of
each of the following conditions, the waiver of which shall not be effective
against any Purchaser who does not consent in writing thereto:

                           9.1.1 REPRESENTATIONS AND WARRANTIES. The
representations and warranties of the Company contained in Section 6 shall, if
specifically qualified by materiality, be true in all respects, and if not so
qualified, be true in all material respects, on and as of the First Closing with
the same effect as though such representations and warranties had been made on
and as of the date of such Closing.

                           9.1.2 PERFORMANCE. The Company shall have performed
and complied with all agreements, obligations and conditions contained in this
Agreement that are required to be performed or complied with by it on or before
the First Closing.

                                       28
<PAGE>   30

                           9.1.3 COMPLIANCE CERTIFICATE. The President of the
Company shall deliver to each Purchaser at the First Closing a certificate
stating that the conditions specified in Sections 9.1.1 and 9.1.2 have been
fulfilled.

                           9.1.4 QUALIFICATIONS. All authorizations, approvals
or permits, if any, of any governmental authority or regulatory body of the
United States or of any state that are required in connection with the lawful
issuance and sale of the Notes pursuant to this Agreement shall be duly obtained
and effective as of the First Closing.

                           9.1.5 PROCEEDINGS AND DOCUMENTS. All corporate and
other proceedings in connection with the transactions contemplated at the First
Closing, and all documents incident thereto shall be reasonably satisfactory in
form and substance to each Purchaser, and they shall have received all such
counterpart original and certified or other copies of such documents as they may
reasonably request.

                           9.1.6 AMENDED CERTIFICATE. The Company and its
shareholders shall have adopted and approved, and the Company shall have filed
with the Secretary of State of the State of Delaware, the Amended Certificate.

                           9.1.7 OPINION OF COMPANY COUNSEL. Each Purchaser
shall have received an opinion from Brownstein Hyatt & Farber, P.C., counsel for
the Company, dated as of the First Closing, in the form attached as EXHIBIT F,
and an opinion from Harris, Wiltshire & Grannis LLP, counsel for the Company,
dated as of the First Closing, in the form attached as EXHIBIT G.

                           9.1.8 AMENDMENT TO THE BYLAWS. The Board shall have
adopted and approved the Amendment to the Bylaws in the form attached as EXHIBIT
H hereto.

                           9.1.9 WAIVER OF PREEMPTIVE RIGHTS. Each Purchaser
shall have received evidence of the waiver of any preemptive rights with respect
to the issuance of all Securities to be issued pursuant to this Agreement (in
form and substance reasonably acceptable to the Purchasers) except to the extent
being exercised hereunder.

                           9.1.10 THIRD PARTY CONSENTS. Each Purchaser shall
have received evidence that the Company has obtained all third party consents
required under Section 6.11 above (in form and substance reasonably acceptable
to the Purchasers).

                           9.1.11 AMENDED INVESTOR RIGHTS AGREEMENT. The Company
and all of the other parties signatory thereto shall have executed and delivered
the Amended Investor Rights Agreement.

                           9.1.12 AMENDED VOTING AGREEMENT. The Company and all
of the other parties signatory thereto shall have executed and delivered the
Amended Voting Agreement.

                           9.1.13 AMENDED FIRST OFFER AGREEMENT. The Company and
all of the other parties signatory thereto shall have executed and delivered the
Amended First Offer Agreement.

                                       29
<PAGE>   31

         Notwithstanding anything herein to the contrary, no Purchaser shall be
entitled to delay or otherwise adversely affect the First Closing by reason of
its failure for any reason to execute and deliver the documents referred to in
Sections 9.1.11, 9.1.12, and 9.1.13 above, other than the failure of the Company
to satisfy the requirements in Sections 9.1.1 through 9.1.10 above.

                  9.2 CONDITIONS OF EACH PURCHASER'S OBLIGATIONS AT THE SECOND
CLOSING. The obligations of each Purchaser under Sections 3 and 4.2 of this
Agreement are subject to the fulfillment on or before the Second Closing of each
of the following conditions, the waiver of which shall not be effective against
any Purchaser who does not consent in writing thereto:

                           9.2.1 REPRESENTATIONS AND WARRANTIES. The
representations and warranties of the Company contained in Sections 6.1, 6.4,
6.5, 6.6, 6.7, 6.11, 6.17, 6.20 and 6.30 shall, if specifically qualified by
materiality, be true in all respects, and if not so qualified, be true in all
material respects on and as of the Second Closing with the same effect as though
such representations and warranties had been made on and as of the date of such
Closing.

                           9.2.2 PERFORMANCE. The Company shall have performed
and complied with all agreements, obligations and conditions in all material
respects contained in this Agreement that are required to be performed or
complied with by it on or before the Second Closing.

                           9.2.3 COMPLIANCE CERTIFICATE. The President of the
Company shall deliver to each Purchaser at the Second Closing a certificate
stating that the conditions specified in Sections 9.2.1 and 9.2.2 have been
fulfilled.

                           9.2.4 QUALIFICATIONS. All authorizations, approvals
or permits, if any, of any governmental authority or regulatory body of the
United States or of any state that are required in connection with the lawful
issuance and sale of the Securities pursuant to this Agreement shall be duly
obtained and effective as of the Second Closing.

                           9.2.5 PROCEEDINGS AND DOCUMENTS. All corporate and
other proceedings in connection with the transactions contemplated at the Second
Closing, and all documents incident thereto shall be reasonably satisfactory in
form and substance to Purchasers' special counsel, and they shall have received
all such counterpart original and certified or other copies of such documents as
they may reasonably request.

                           9.2.6 OPINION OF COMPANY COUNSEL. Each Purchaser
shall have received an opinion from Brownstein, Hyatt & Farber, P.C., counsel
for the Company, dated as of the Second Closing, in the form attached as EXHIBIT
I and an opinion from Harris, Wiltshire & Grannis LLP, counsel for the Company,
dated as of the Second Closing, in the form attached as EXHIBIT J.

                           9.2.7 FCC APPROVAL. Each Purchaser shall have
received evidence of the Company's receipt of the FCC Approval (in form and
substance reasonably acceptable to each Purchaser).

                           9.2.8 BOARD OF DIRECTORS. The Company shall have
taken all necessary corporate action such that immediately following the Second
Closing, the directors of the

                                       30
<PAGE>   32

Company shall be Thomas Moore, Peter Segaloff, David Drucker, Russell Siegelman,
Peter Boylan and David Flowers (provided that Liberty has not sent a Notice Not
to Close)(collectively, the "DIRECTORS"). The seventh director shall be elected
by unanimous vote of the Directors at a duly called meeting of the directors or
by unanimous written consent. The Company shall have executed and delivered an
Indemnification Agreement in favor or each of the Directors, substantially in
the form as is currently in effect with respect to each of the directors of the
Company.

                           9.2.9 THIRD PARTY CONSENTS. Each Purchaser shall have
received evidence that the Company has obtained all third party consents
required under Section 6.11 above (in form and substance reasonably acceptable
to the Purchasers).

                           9.2.10. HSR. All applicable waiting periods under the
HSR Act shall have expired or been terminated.

                  9.3 CONDITIONS OF THE COMPANY'S OBLIGATIONS AT CLOSINGS. The
obligations of the Company to each Purchaser under this Agreement are subject to
the fulfillment on or before each of the First Closing and the Second Closing,
as the case may be, of each of the following conditions by that Purchaser:

                           9.3.1 REPRESENTATIONS AND WARRANTIES. The
representations and warranties of the Purchasers contained in Section 7 shall,
if specifically qualified by materiality, be true in all respects and, if not so
qualified, be true in all material respects on and as of the date of each of the
First Closing and the Second Closing, as the case may be, with the same effect
as though such representations and warranties had been made on and as of the
date of such Closing; provided, however, that if the representations and
warranties made by a Purchaser pursuant to Section 7.9 are not true in all
material respects on and as of either the First Closing or the Second Closing,
as the case may be, the sole remedy available to the Company with respect
thereto shall be not to consummate the transactions contemplated by this
Agreement with respect to such Purchaser at such Closing (including, without
limitation, not issuing the Securities to be issued to such Purchaser at such
Closing), and such Purchaser shall not be liable to any Person for any damages,
direct or indirect, as a result of the failure of such representations and
warranties to be true in all material respects as of such Closing.

                           9.3.2 PAYMENT OF PURCHASE PRICE AT FIRST CLOSING. The
Purchasers shall have delivered the aggregate purchase price specified opposite
each of their names on SCHEDULE I hereto.

                           9.3.3 PAYMENT OF PURCHASE PRICE AT SECOND CLOSING.
The Purchasers shall have delivered the aggregate purchase price (including
their Notes marked "Paid In Full") specified opposite their names on SCHEDULE II
hereto.

                           9.3.4 QUALIFICATIONS. All authorizations, approvals
or permits, if any, of any governmental authority or regulatory body of the
United States or of any state that are required in connection with the lawful
issuance and sale of the Securities pursuant to this Agreement shall be duly
obtained and effective as of each of the First Closing and the Second Closing,
as the case may be.

                                       31
<PAGE>   33

                           9.3.5 OTHER TRANSACTION DOCUMENTS. Each of the other
parties signatory hereto and thereto shall have executed and delivered this
Agreement, each of the other Transaction Documents and such other documents as
reasonably requested by the Company in order to effectuate the consummation of
the transactions contemplated herein.

                           9.3.6 HSR. In the case of the Second Closing, all
applicable waiting periods under the HSR Act shall have expired or been
terminated.

         10. TERMINATION. This Agreement may be terminated and the transactions
contemplated by this Agreement may be abandoned at any time prior to date of the
First Closing (by written notice delivered by the terminating Party to the other
Parties, except with respect to a termination pursuant to paragraph (a)) as
follows:

                           (a) by the mutual written consent of the Company and
all of the Purchasers;

                           (b) by any Party if the First Closing has not
occurred by December 31, 1999, for any reason other than (i) a breach or default
by such Party in the performance of any of its obligations under this Agreement
or (ii) the failure of any material representation or warranty of such Party to
be materially accurate; or

                           (c) by any Purchaser pursuant to Section 8.3.1.

         11. MISCELLANEOUS.

                  11.1 SURVIVAL. The warranties, representations and covenants
of the Company and the Purchasers contained in or made pursuant to this
Agreement shall survive the execution and delivery of this Agreement and the
Closings and shall in no way be affected by any investigation of the subject
matter thereof made by or on behalf of the Purchasers or the Company.

                  11.2 SUCCESSORS AND ASSIGNS. Except as otherwise set forth
herein, no Party hereto shall assign any of its rights or obligations hereunder
without the prior written consent of each of the other Parties hereto, which
consent shall not be unreasonably withheld, conditioned or delayed; provided,
however, that a Purchaser may assign any of its rights or obligations hereunder,
without the prior written consent of any other Party, to any Affiliate of such
Purchaser. Subject to the foregoing, the terms and conditions of this Agreement
shall inure to the benefit of and be binding upon the respective successors and
assigns of the Parties (including transferees of any Securities). Nothing in
this Agreement, express or implied, is intended to confer upon any Party, other
than the Parties hereto or their respective successors and assigns, any rights,
remedies, obligations or liabilities under or by reason of this Agreement,
except as expressly provided in this Agreement.

                   11.3 GOVERNING LAW. This Agreement shall be governed by and
construed under the laws of the State of Colorado as applied to agreements among
Colorado residents entered into and to be performed entirely within Colorado.

                                       32
<PAGE>   34

                  11.4 TITLES AND SUBTITLES. The titles and subtitles used in
this Agreement are used for convenience only and are not to be considered in
construing or interpreting this Agreement.

                  11.5 NOTICES. All notices required or permitted hereunder
shall be in writing and shall be deemed effectively given: (a) upon personal
delivery to the Party to be notified, (ii) when sent by confirmed telex or
facsimile if sent during normal business hours of the recipient, if not, then on
the next Business Day; (iii) five days after having been sent by registered or
certified mail, return receipt requested, postage prepaid; or (iv) one day after
deposit with a nationally recognized overnight courier, specifying next day
delivery, with written verification of receipt. All communications shall be sent
to the address as set forth on the signature page hereof or at such other
address as such Party may designate by ten days advance written notice to the
other parties hereto.

                  11.6 FINDER'S FEE. Except as set forth on the Schedule of
Exceptions, each party represents that it neither is nor will be obligated for
any finders' fee or commission in connection with this transaction. Each
Purchaser agrees to indemnify and to hold harmless the Company from any
liability for any commission or compensation in the nature of a finders' fee
(and the costs and expenses of defending against such liability or asserted
liability) for which such Purchaser or any of its officers, partners, employees
or representatives is responsible. The Company agrees to indemnify and hold
harmless each Purchaser from any liability for any commission or compensation in
the nature of a finders' fee (and the costs and expenses of defending against
such liability or asserted liability) for which the Company or any of its
officers, employees or representatives is responsible

                  11.7 EXPENSES. Irrespective of whether the First Closing
and/or Second Closing is effected, except as set forth in Section 8.3.2, the
Company and each Purchaser shall pay all costs and expenses that it incurs with
respect to the negotiation, execution, delivery and performance of this
Agreement. The Company acknowledges that it has no agreement to pay, and that it
will not pay, any expenses of any other Party to this Agreement (or its
counsel), except as provided in Section 8.3.2.

                  11.8 AMENDMENTS AND WAIVERS. Any term of this Agreement may be
amended and the observance of any term of this Agreement may be waived (either
generally or in a particular instance and either retroactively or
prospectively), only with the written consent of the Company and the Purchasers.

                  11.9 SEVERABILITY. If one or more provisions of this Agreement
are held to be unenforceable under applicable law, such provision shall be
excluded from this Agreement and the balance of the Agreement shall be
interpreted as if such provision were so excluded and shall be enforceable in
accordance with its terms.

                  11.10 AGGREGATION OF STOCK. All of the Preferred Stock (or
Common Stock issued upon conversion thereof) held or acquired by Affiliates
shall be aggregated together for the purpose of determining the availability of
any rights under this Agreement.

                                       33
<PAGE>   35

                  11.11 ENTIRE AGREEMENT. This Agreement and the documents
referred to herein constitute the entire agreement among the Parties and no
party shall be liable or bound to any other Party in any manner by any
warranties, representations or covenants except as specifically set forth herein
or therein.

                  11.12 COUNTERPARTS. This Agreement may be executed in two or
more counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.

                  11.13 ATTORNEYS' FEES. In the event that any dispute among the
Parties to this Agreement should result in litigation, the prevailing Party in
such dispute shall be entitled to recover from the losing party all fees, costs
and expenses of enforcing any right of such prevailing Party under or with
respect to this Agreement, including without limitation, such reasonable fees
and expenses of attorneys and accountants, which shall include, without
limitation, all fees, costs and expenses of appeals.

                  11.14 PRESS RELEASES. No Party to this Agreement shall make
any public announcement or otherwise communicate with any news media with
respect to this Agreement or the transactions contemplated by this Agreement
without prior consultation with each other Party to this Agreement as to the
timing and content of any such announcement as may be reasonable under the
circumstances; provided, however, that nothing contained herein shall prevent
any Party from promptly making all filings with governmental authorities that
may, in its judgment, be required or advisable, or communicating with analysts
or investors, in connection with the execution and delivery of this Agreement or
the consummation of the transactions contemplated by this Agreement so long as
such Party gives timely notice to each other Party of the anticipated
disclosure.

         12. CALIFORNIA COMMISSIONER OF CORPORATIONS.

                  12.1 CORPORATE SECURITIES LAW. THE SALE OF THE SECURITIES THAT
ARE THE SUBJECT OF THIS AGREEMENT HAS NOT BEEN QUALIFIED WITH THE COMMISSIONER
OF CORPORATIONS OF THE STATE OF CALIFORNIA AND THE ISSUANCE OF SUCH SECURITIES
OR THE PAYMENT OR RECEIPT OF ANY PART OF THE CONSIDERATION FOR SUCH SECURITIES
PRIOR TO SUCH QUALIFICATION IS UNLAWFUL, UNLESS THE SALE OF SECURITIES IS EXEMPT
FROM QUALIFICATION BY SECTION 25100, 25102 OR 25105 OF THE CALIFORNIA
CORPORATIONS CODE. THE RIGHTS OF KPCB HEREUNDER ARE EXPRESSLY CONDITIONED UPON
SUCH QUALIFICATION BEING OBTAINED, UNLESS THE SALE IS SO EXEMPT.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                       34
<PAGE>   36

         IN WITNESS WHEREOF, the Parties have executed this Agreement as of the
date first above written.

                                 ISKY.NET, INC.

                                   By:      /s/ David M. Brown
                                      ----------------------------------------

                                   Its:     Vice President
                                        --------------------------------------

                       Address:    9137 East Mineral Circle, Suite 140
                                   Englewood, CO 80112

                                   LIBERTY KASTR CORP.

                                   By: /s/ Gary S. Howard
                                      ----------------------------------------

                                   Its: Executive Vice President
                                        --------------------------------------

                       Address:    9197 S. Peoria Street
                                   Englewood, CO  80112

                                   KPCB HOLDINGS, INC.

                                   By: /s/ RUSSELL SIEGELMAN
                                      ----------------------------------------

                                   Its:
                                        --------------------------------------

                       Address:    2750 Sand Hill Road
                                   Menlo Park, CA 94025

                [SIGNATURE PAGE TO SECURITIES PURCHASE AGREEMENT]

                                       35
<PAGE>   37

                                    DIRECTCOM NETWORKS, INC.

                                    By: /s/ TOBY DEWEESE
                                        -------------------------------------

                                    Its:
                                         ------------------------------------

                          Address:  7174 South Lewis Avenue
                                    Tulsa, Oklahoma 74136-5422

                                    TELEVERDE COMMUNICATIONS L.P.

                                    By: TELEVERDE COMMUNICATIONS,
                                        CORP., general partner

                                    By: /s/ DAVID M. DRUCKER
                                        -------------------------------------

                                    Its:
                                         ------------------------------------

                          Address:  2727 Bryant Street, Suite 430
                                    Denver, Colorado 80211

                [SIGNATURE PAGE TO SECURITIES PURCHASE AGREEMENT]

                                       36
<PAGE>   38

                                   SCHEDULE I

                         PURCHASERS AT THE FIRST CLOSING

<TABLE>
<CAPTION>
                                                                                                   AMOUNT INVESTED
PURCHASER                                                                                          AT FIRST CLOSING
---------                                                                                          ----------------

<S>                                                                                                <C>
LIBERTY KASTR CORP.                                                                                $     15,000,000

KPCB HOLDINGS, INC.                                                                                $      8,000,000

DIRECTCOM NETWORKS, INC.                                                                           $      4,000,000

TELEVERDE COMMUNICATIONS, L.P.                                                                     $   2,028,942.68
</TABLE>

<PAGE>   39

                                   SCHEDULE II

                        PURCHASERS AT THE SECOND CLOSING

                                 NOTE CONVERSION

<TABLE>
<CAPTION>

             INVESTOR                         # SERIES A        # SERIES B SHARES          # SERIES C SHARES
                                                SHARES

<S>                                          <C>                <C>                        <C>
LIBERTY KASTR CORP.                           15,000,000                     0                           0

KPCB HOLDINGS, INC.                            4,000,000               222,833                   1,009,540

DIRECTCOM NETWORKS, INC.                       4,000,000                     0                           0

TELEVERDE COMMUNICATIONS, L.P.                 1,264,472                     0                     218,420
</TABLE>

                                ADDITIONAL SHARES

<TABLE>
<CAPTION>

             INVESTOR                       # SERIES A     # SERIES B SHARES       # SERIES C SHARES        AMOUNT DUE AT SECOND
                                              SHARES                                                                     CLOSING

<S>                                         <C>              <C>                    <C>                     <C>
LIBERTY KASTR CORP.                              0                835,625                3,785,772              $ 15,000,000.75

KPCB HOLDINGS, INC.                              0                      0                        0                            0

DIRECTCOM NETWORKS, INC.                         0                222,833                1,009,540              $  4,000,002.30

TELEVERDE COMMUNICATIONS, L.P.                   0                 70,441                  100,714              $    500,001.78
</TABLE><PAGE>   1
                                                                    EXHIBIT 10.5

                                   iSKY, INC.

                          SECURITIES PURCHASE AGREEMENT

                                 MARCH 16, 2000

<PAGE>   2

                          SECURITIES PURCHASE AGREEMENT

         THIS SECURITIES PURCHASE AGREEMENT (this "Agreement") is made on the
16th day of March, 2000, by and among iSKY, Inc., a Delaware corporation (the
"Company"), and EchoStar Communication Corporation, a Nevada corporation
("EchoStar").

         THE PARTIES HEREBY AGREE AS FOLLOWS:

         1. Purchase and Sale of Units.

         1.1 Sale and Issuance of Securities. Subject to the terms and
conditions of this Agreement, in consideration of entering into this Agreement
and the other agreements contemplated herein, EchoStar agrees to purchase at the
Closing and the Company agrees to sell and issue to EchoStar at the Closing for
$50.0 million (the "Purchase Price") 14,285,714 Units, each Unit consisting of
(a) 1 share of the Company's Series D Nonvoting Preferred Stock (the "Series D
Shares"), and (b) a warrant, in the form of Exhibit A, to purchase .42 shares of
the Company's Series F Preferred Stock (the "Warrant"). The term Units as used
herein shall mean the Unit as a whole or any part thereof and any underlying
securities, as appropriate.

         1.2 Closing.

         (a) The purchase and sale of the Units to EchoStar shall take place at
the offices of the Company, 9137 East Mineral Circle, Suite 140, Englewood,
Colorado 80112, at 10:00 A.M., on March 20, 2000 or at such other time and place
as the Company and EchoStar mutually agree upon orally or in writing (which time
and place are designated as the "Closing").

         (b) At the Closing, the Company shall deliver to EchoStar the Warrant
and a certificate representing the Series D Shares against payment of the
Purchase Price therefor by wire transfer.

         2. Representations and Warranties of the Company. The Company hereby
represents and warrants to EchoStar that, except as set forth on a Schedule of
Exceptions (the "Schedule of Exceptions") furnished to EchoStar on or before
Closing and to be attached hereto as Schedule A, which exceptions shall be
deemed to be representations and warranties as if made hereunder, without giving
effect to the transactions contemplated hereby:

         2.1 Organization, Good Standing and Qualification. The Company is a
corporation duly organized, validly existing and in good standing under the laws
of the State of Delaware. The Company is duly qualified to transact business and
is in good standing in each jurisdiction in which the failure to so qualify
would have a material adverse effect on its business or properties. The Company
has provided EchoStar a certified copy of the Company's Certificate of
Incorporation (the "Certificate"), including all amendments thereto, as in
effect on the date hereof.

         2.2 Capitalization and Voting Rights. The authorized capital of the
Company consists of:

         (a) Preferred Stock. 135,494,557 shares of Preferred Stock, par value
$.001 (the "Preferred Stock"), of which (i) 109,499,831 shares have been
designated Series A Preferred

<PAGE>   3

Stock (the "Series A Preferred Stock"), of which 96,307,972 shares are issued
and outstanding, (ii) 2,406,995 shares have been designated Series B Preferred
Stock (the "Series B Preferred Stock"), of which 2,187,357 shares are issued and
outstanding, (iii) 23,587,731 shares have been designated Series C Preferred
Stock (the "Series C Preferred Stock" and together with the Series A and Series
B Preferred Stock, the "Preferred Stock") of which 6,123,986 shares are issued
and outstanding. The rights, privileges and preferences of the Preferred Stock
will be as stated in the Certificate.

         (b) Common Stock. 150,060,169 shares of common stock, par value $.001
("Common Stock"), of which no shares are issued and outstanding.

         (c) Schedule B hereto identifies each holder of Preferred Stock and the
number and series of such shares owned immediately prior to the Closing.

         (d) The outstanding shares of Preferred Stock are all duly and validly
authorized and issued, fully paid and nonassessable, and were issued in
compliance with all applicable state and federal laws concerning the issuance of
securities.

         (e) Except for (i) the conversion privileges of the Preferred Stock,
(ii) the right of EchoStar to acquire shares of Series F Preferred Stock or
Common Stock pursuant to the Warrant and the warrant issued to EchoStar pursuant
to the Marketing, Joint Box Production and Warrants Agreement, (iii) the rights
provided in Section 4 of the Amended and Restated Investor Rights Agreement
dated as of October 19, 1999, as amended by the First Amendment to Amended and
Restated Investor Rights Agreement (the "First Amendment") effective as of the
date of Closing among the Company, EchoStar and the Investors signatory thereto
(as amended, the "Investor Rights Agreement"), (iv) currently outstanding rights
to obtain warrants to purchase 3,636,364 shares of Series C Preferred Stock, (v)
currently outstanding rights to obtain 514,286 shares of Series C Preferred
Stock, and (vi) currently outstanding options for 1,221,459 shares of Common
Stock and 10,921,881 shares of Preferred Stock granted pursuant to the Company's
Stock Option Plans (the "Option Plans"), there are no outstanding options,
warrants, rights (including conversion or preemptive rights) or agreements for
the purchase or acquisition from the Company of any shares of its capital stock.
The Company is not a party or subject to any agreement or understanding, and, to
the Company's knowledge, there is no agreement or understanding between any
persons and/or entities, which affects or relates to the voting or giving of
written consents with respect to any security or by a director of the Company.

         2.3 Subsidiaries.

         (a) The Schedule of Exceptions sets forth (i) the name of each
corporation, partnership, limited liability company or other entity in which the
Company has, directly or indirectly, an equity interest representing 50% or more
of the capital stock thereof or other equity interests therein (individually, a
"Subsidiary" and, collectively, the "Subsidiaries"); (ii) the number and type of
outstanding equity securities of each Subsidiary and a list of the holders
thereof; (iii) the jurisdiction of organization of each Subsidiary; (iv) the
names of the officers and directors, or managers and members, of each
Subsidiary; and (v) the jurisdictions in which each Subsidiary is qualified or
holds licenses to do business as a foreign corporation.

                                       2
<PAGE>   4

         (b) Each Subsidiary is duly organized, validly existing and in good
standing under the laws of its state of organization. Each Subsidiary is duly
qualified to transact business and is in good standing in each jurisdiction in
which the failure to so qualify would have a material adverse effect on its
business or properties. The Company has provided EchoStar with a certified copy
of the charter documents of each Subsidiary, including all amendments thereto,
as in effect on the date hereof.

         (c) The Company owns 100% of the outstanding equity interests of each
of KaSTAR 109.2 Acquisition, LLC, a Colorado limited liability company and
KaSTAR 73 Acquisition, LLC, a Colorado limited liability company.

         2.4 Authorization. All corporate action on the part of the Company, its
officers, directors and stockholders necessary for the authorization, execution
and delivery of this Agreement, the Investor Rights Agreement, that certain
Third Amended and Restated Voting Agreement in the form of Exhibit B hereto and
dated as of the date hereof among the Company, EchoStar and the parties
identified in the first paragraph thereof (the "Voting Agreement"), the
performance of all obligations of the Company hereunder and thereunder, and the
authorization (or reservation for issuance), sale and issuance of the Series D
Shares and the Warrant being sold hereunder and the underlying securities has
been taken or will be taken prior to the Closing. This Agreement, the Investor
Rights Agreement and the Voting Agreement constitute valid and legally binding
obligations of the Company, enforceable in accordance with their respective
terms, except (i) as limited by applicable bankruptcy, insolvency,
reorganization, moratorium and other laws of general application affecting
enforcement of creditors' rights generally, (ii) as limited by laws relating to
the availability of specific performance, injunctive relief or other equitable
remedies, and (iii) to the extent the indemnification provisions contained in
the Investor Rights Agreement may be limited by applicable federal or state
securities laws.

         2.5 Valid Issuance of the Securities. The Series D Shares, the Warrant,
the shares of Series E Preferred Stock issuable upon conversion of the Series D
Shares (the "Series E Shares"), the shares of Series F Preferred Stock issuable
upon exercise of the Warrant (the "Series F Warrant Shares") and the Common
Stock issuable upon conversion of the Series E Shares and Series F Warrants
Shares, when issued, sold and delivered in accordance with the terms of this
Agreement, the Preferred Stock and the Warrant for the consideration expressed
herein and therein, will be duly and validly issued, fully paid and
nonassessable and will be free of restrictions on transfer, other than
restrictions on transfer under this Agreement, the Warrant and the Investor
Rights Agreement and under applicable state and federal securities laws. Each of
the Series E Shares, the Series F Warrant Shares and the Common Stock issuable
upon conversion of the Series E Shares and the Series F Warrant Shares has been,
or at the Closing will be, duly and validly reserved for issuance and, upon
issuance in accordance with the terms of the Certificate and the Warrant, will
be duly and validly issued, fully paid and nonassessable and will be free of
restrictions on transfer, other than restrictions on transfer under this
Agreement, the Warrant, the Investor Rights Agreement and under applicable state
and federal securities laws.

         2.6 Governmental Consents. No consent, approval, order or authorization
of, or registration, qualification, designation, declaration or filing with, any
foreign, federal, state or local governmental authority on the part of the
Company or any Subsidiary is required in

                                       3
<PAGE>   5

connection with the consummation of the transactions contemplated by this
Agreement, except for filings required pursuant to applicable federal and state
securities laws and blue sky laws, which filings will be effected within the
required statutory period.

         2.7 Offering. Subject to the truth and accuracy of EchoStar's
representations set forth in Section 3 of this Agreement, the offer, sale and
issuance of the Units as contemplated by this Agreement are exempt from the
registration requirements of the Securities Act of 1933, as amended (the "Act"),
and the qualification or registration requirements of federal or other
applicable blue sky laws. Neither the Company nor any authorized agent acting on
its behalf will take any action hereafter that would cause the loss of such
exemptions.

         2.8 Litigation. There is no action, suit, proceeding or investigation
pending, or to the Company's knowledge, currently threatened against the Company
or any Subsidiary that questions the validity of this Agreement or the right of
the Company to enter into such agreement or to consummate the transactions
contemplated hereby, or that might result, either individually or in the
aggregate, in any material adverse changes in the business, assets or condition
of the Company or any Subsidiary, financially or otherwise, or any change in the
current equity ownership of the Company or any Subsidiary (other than
governmental proceedings affecting the satellite industry in general). Except
for the Company's FCC authorizations and other orders of the FCC, all of which
are generally publicly available (and all of the material provisions of which
are publicly available), neither the Company nor any Subsidiary is a party or
subject to the provisions of any order, writ, injunction, judgment or decree of
any court or government agency or instrumentality. There is no FCC rule,
regulation or order currently in effect that, to the Company's knowledge, would
result in or require a material adverse change in the business or operations of
the Company. There is no action, suit, proceeding or investigation initiated by
the Company or any Subsidiary currently pending or that the Company or any
Subsidiary intends to initiate.

         2.9 Proprietary Information Agreements. Each employee, officer and
consultant of the Company (other than outside counsel and accountants to the
Company) or any Subsidiary has executed a Proprietary Information and Inventions
Agreement, copies of which have been provided to EchoStar. Neither the Company
nor any Subsidiary, after reasonable investigation, is aware that any of its
employees, officers or consultants are in violation thereof, and the Company
will use its reasonable efforts to prevent any such violation.

         2.10 Patents and Trademarks. To its knowledge, the Company and each
Subsidiary possesses all patents, patent rights, trademarks, trademark rights,
service marks, service mark rights, trade names, trade name rights and
copyrights (collectively, the "Intellectual Property") necessary for its
business without any conflict with or infringement of the valid rights of others
and the lack of which could materially and adversely affect the operations or
condition, financial or otherwise, of the Company or any Subsidiary, and neither
the Company nor any Subsidiary has received any notice of infringement upon or
conflict with the asserted rights of others. The Company and each Subsidiary has
a valuable body of trade secrets, including know-how, concepts, computer
programs and other technical data (the "Proprietary Information") for the
development, manufacture and sale of its products. To its knowledge, the Company
and each Subsidiary has the right to use the Proprietary Information free and
clear of any rights, liens, encumbrances or claims of others, except that the
possibility exists that other persons may have

                                       4
<PAGE>   6

independently developed trade secrets or technical information similar or
identical to those of the Company or any Subsidiary. Neither the Company nor any
Subsidiary is aware of any such independent development nor of any
misappropriation of its Proprietary Information. Neither the Company nor any
Subsidiary is aware that any of its employees is obligated under any contract
(including licenses, covenants or commitments of any nature) or other agreement,
or subject to any judgment, decree or order of any court or administrative
agency, that would interfere with the use of his or her best efforts to promote
the interests of the Company or any Subsidiary or that would conflict with the
Company's or any Subsidiary's business. The Company does not believe it is or
will be necessary to utilize any inventions of any of its or any of its
Subsidiary's employees (or people it currently intends to hire) made prior to
their employment by the Company or any Subsidiary.

         2.11 Compliance with Other Instruments. Neither the Company nor any
Subsidiary is in violation in any material respect of any provision of its
Certificate or Bylaws, or Articles of Organization or Operating Agreement, as
the case may be, nor, to its knowledge, in any material respect of any
instrument, judgment, order, writ, decree, authorization, license or contract,
statute, rule or regulation to which the Company or any Subsidiary is subject
and a violation of which would have a material adverse effect on the condition,
financial or otherwise, or operations of the Company or any Subsidiary. The
execution, delivery and performance of this Agreement and the consummation of
the transactions contemplated hereby, will not result in any such violation, or
be in conflict with or constitute, with or without the passage of time and
giving of notice, either a default under any such provision or an event that
results in the creation of any lien, charge or encumbrance upon any assets of
the Company or any Subsidiary or the suspension, revocation, impairment,
forfeiture or non-renewal of any material permit, license, authorization or
approval applicable to the Company or any Subsidiary, or its business or
operations or any of its assets or properties.

         2.12 Agreements; Action.

         (a) Except for agreements explicitly contemplated hereby, there are no
agreements, understandings or proposed transactions between the Company or any
Subsidiary and any of its officers, directors, affiliates or any affiliate
thereof.

         (b) There are no agreements, understandings, instruments, contracts,
proposed transactions, judgments, orders, writs or decrees to which the Company
or any Subsidiary is a party or by which it is bound that may involve (i)
obligations (contingent or otherwise) of, or payments to the Company or any
Subsidiary, in excess of $50,000, other than obligations of, or payments to, the
Company or any Subsidiary arising from purchase or sale agreements entered into
in the ordinary course of business, (ii) the license of any patent, copyright,
trade secret or other proprietary right to or from the Company or any
Subsidiary, (iii) provisions restricting or affecting the development,
manufacture or distribution of the Company's or any Subsidiary's products or
services, or (iv) indemnification by the Company or any Subsidiary with respect
to infringements of proprietary rights, other than indemnification obligations
arising from purchase or sale agreements entered into in the ordinary course of
business).

         (c) Neither the Company nor any Subsidiary has (i) declared or paid any
dividends or authorized or made any distribution upon or with respect to any
class or series of its capital stock

                                       5
<PAGE>   7

or other equity interests, (ii) incurred any indebtedness for money borrowed or
any other liabilities individually in excess of $10,000 or, in the case of
indebtedness and/or liabilities individually less than $10,000, in excess of
$50,000 in the aggregate, (iii) made any loans or advances to any person, other
than ordinary advances for travel expenses, or (iv) sold, exchanged or otherwise
disposed of any of its assets or rights, other than the sale of its inventory in
the ordinary course of business.

         (d) For the purposes of subsections (b) and (c) above, all
indebtedness, liabilities, agreements, understandings, instruments, contracts
and proposed transactions involving the same person or entity (including persons
or entities the Company has reason to believe are affiliated therewith) shall be
aggregated for the purpose of meeting the individual minimum dollar amounts of
such subsections.

         (e) Neither the Company nor any Subsidiary has engaged in the past
three (3) months in any discussion (i) with any representative of any
corporation or corporations regarding the consolidation or merger of the Company
or any Subsidiary with or into any such corporation or corporations, (ii) with
any corporation, partnership, association or other business entity or any
individual regarding the sale, conveyance or disposition of all or substantially
all of the assets of the Company or any Subsidiary or a transaction or series of
related transactions in which more than fifty percent (50%) of the voting power
of the Company or any Subsidiary is disposed of, or (iii) regarding any other
form of acquisition, liquidation, dissolution or winding up of the Company or
any Subsidiary.

         (f) All of the contracts, agreements and instruments set forth on the
Schedule of Exceptions pursuant to this Section 2.12 are valid, binding and
enforceable in accordance with their respective terms. The Company has performed
all material obligations required to be performed by it and is not in default
under or in breach of nor in receipt of any claim of default or breach under any
contract, agreement or instrument and the Company does not have any present
expectation or intention of not fully performing all such obligations. No event
has occurred which with the passage of time or the giving of notice or both
would result in a default, breach or event of noncompliance by the Company under
any contract, agreement or instrument. The Company has no knowledge of any
breach or anticipated breach by the other parties to any contract, agreement,
instrument or commitment.

         (g) EchoStar has received or had the opportunity to receive upon
request a true and correct copy of each of the written instruments, plans,
contracts and agreements and an accurate description of each of the oral
arrangements, contracts and agreements that are referred to on the Schedule of
Exceptions pursuant to this Section 2.12, together with all amendments, waivers
or other changes thereto.

         2.13 Related-Party Transactions. No employee, officer or director of
the Company or any Subsidiary or member of his or her immediate family is
indebted to the Company or any Subsidiary, nor is the Company or any Subsidiary
indebted (or committed to make loans or extend or guarantee credit) to any of
them. To the best of the Company's knowledge, none of such persons has any
direct or indirect ownership interest in any firm or corporation with which the
Company or any Subsidiary is affiliated or with which the Company or any
Subsidiary has a business relationship, or any firm or corporation that competes
with the Company or any

                                       6
<PAGE>   8

Subsidiary, except that employees, officers or directors of the Company or any
Subsidiary and members of their immediate families may own stock in publicly
traded companies (not individually exceeding 5% of the outstanding stock of any
such company) that may compete with the Company. No member of the immediate
family of any officer or director of the Company or any Subsidiary is directly
or indirectly interested in any material contract with the Company or any
Subsidiary.

         2.14 Financial Statements. The Company has delivered to EchoStar its
unaudited financial statements (balance sheet and statement of operations,
statement of stockholders' equity and statement of cash flows, including notes
thereto) at December 31, 1999 and for the fiscal year then ended, and its
unaudited financial statements (balance sheet and statement of operations) as,
at and for the one (1) month period ended January 31, 2000 (the "Financial
Statements"). The Financial Statements have been prepared in accordance with
generally accepted accounting principles applied on a consistent basis
throughout the periods indicated and with each other, except that unaudited
Financial Statements may not contain all footnotes required by generally
accepted accounting principles. The Financial Statements fairly present the
financial condition and operating results of the Company and any Subsidiaries as
of the dates, and for the periods, indicated therein, subject in the case of
unaudited Financial Statements to normal year-end audit adjustments. Except as
set forth in the Financial Statements, neither the Company nor any Subsidiary
has any material liabilities, contingent or otherwise, other than (i)
liabilities incurred in the ordinary course of business subsequent to December
31, 1999 and (ii) obligations under contracts and commitments incurred in the
ordinary course of business and not required under generally accepted accounting
principles to be reflected in the Financial Statements, which, in both cases,
individually or in the aggregate, are not material to the financial condition or
operating results of the Company or any Subsidiary. Except as disclosed in the
Financial Statements, neither the Company nor any Subsidiary is a guarantor or
indemnitor of any indebtedness of any other person, firm or corporation. The
Company maintains and will continue to maintain a standard system of accounting
established and administered in accordance with generally accepted accounting
principles.

         2.15 Changes. Other than as contemplated hereby, since January 31, 2000
there has not been:

         (a) any change in the assets, liabilities, financial condition or
operating results of the Company or any Subsidiary from that reflected in the
Financial Statements, except changes in the ordinary course of business that
have not been, in the aggregate, materially adverse;

         (b) any damage, destruction or loss, whether or not covered by
insurance, materially and adversely affecting the assets, properties, financial
condition, operating results or business of the Company or any Subsidiary;

         (c) any waiver by the Company or any Subsidiary of a valuable right or
of a material debt owed to it;

         (d) any satisfaction or discharge of any lien, claim or encumbrance or
payment of any obligation by the Company or any Subsidiary, except in the
ordinary course of business and that

                                       7
<PAGE>   9

is not material to the assets, properties, financial condition, operating
results or business of the Company or any Subsidiary;

         (e) any material change or amendment to a material contract or
arrangement by which the Company or any Subsidiary or any of its assets or
properties is bound or subject;

         (f) any material change in any compensation arrangement or agreement
with any employee; or

         (g) any agreement or commitment by the Company or any Subsidiary to do
any of the things described in this Section 2.15.

         2.16 Tax Returns. The Company and each Subsidiary have timely filed all
tax returns (federal, state and local) required to be filed by it and all Taxes
(as defined below), assessments or other governmental charges imposed upon the
Company or any Subsidiary, or upon any of the assets, income or franchises of
the Company or any Subsidiary, have been timely paid or, if not yet payable, are
adequately accrued on the Company's books and records. Neither the Company nor
any Subsidiary has been advised that any of its returns have been or are being
audited. "Tax" or "Taxes" means any federal, state, local or foreign income,
gross receipts, license, payroll, employment, excise, severance, stamp,
occupation, premium, property, windfall, profits, environmental, customs,
capital stock, franchise, employees' income withholding, foreign or domestic
withholding, social security, unemployment, disability, real property, personal
property, sales, use, transfer, value added, alternative or add-on minimum or
other similar tax, governmental fee, governmental assessment or governmental
charge of any kind whatsoever, including any interest, penalties or addition to
Tax or additional amounts with respect to the foregoing.

         2.17 Permits. The Company and each Subsidiary has all franchises,
permits, licenses, certifications, authorizations and any similar authority
(including, without limitation, all authorizations from the FCC) necessary for
the conduct of its business, the lack of which could materially and adversely
affect the business, properties or financial condition of the Company or any
Subsidiary (other than additional authorizations described in the order granting
the Company's FCC authorizations and that are the subject of pending rule-making
proceedings affecting the satellite industry in general). Neither the Company
nor any Subsidiary is in default in any material respect under any of such
franchises, permits, licenses, certifications, authorizations or other similar
authority. The Company and each Subsidiary has timely filed all reports, tariffs
and other documents required to be filed with the FCC as a condition of the
Company's authorization to construct, launch and operate geostationary Ka-band
satellites, and the FCC has not established for the Company or any Subsidiary an
implementation milestone schedule concerning the construction, launch or
operation of the Company's proposed satellites or other condition or requirement
of such authorization. There is no FCC rule or contractual provision by which
the Company is bound, compliance with which is required as of the date hereof,
that materially jeopardizes the Company's planned launch for the Company's
proposed satellites.

         2.18 Environmental and Safety Laws. To its knowledge, neither the
Company nor any Subsidiary is in violation of any applicable statute, law or
regulation relating to the environment

                                       8
<PAGE>   10

or occupational health and safety, and to its knowledge, no material
expenditures are or will be required in order to comply with any such existing
statute, law or regulation.

         2.19 Disclosure. The Company has fully provided EchoStar with all the
information that it has requested for deciding whether to purchase the Units and
all information that the Company believes is reasonably necessary to enable
EchoStar to make such decision. Neither this Agreement (including all the
exhibits and schedules hereto) nor any other statements or certificates made or
delivered in connection herewith, taken as a whole, contains any untrue
statement of a material fact or omits to state a material fact necessary to make
the statements herein or therein not misleading in light of the circumstances
under which they were made.

         2.20 Modification of FCC Authorization. No modification or amendment
of, or other change in, the Company's FCC authorization is necessary for the
Company to provide the communications services it currently intends to provide.
The absence of any modification or amendment of, or other change in, the
Company's FCC authorization will not result in or require a material adverse
change in the business or operations of the Company.

         2.21 Registration Rights. Except as provided in the Investor Rights
Agreement, the Company has not granted or agreed to grant any registration
rights, including piggyback rights, to any person or entity.

         2.22 Corporate Documents; Minute Books. The Certificate and Bylaws of
the Company, and the Articles of Organization and Operating Agreement of each
Subsidiary, are in the form previously provided to EchoStar. The minute books of
the Company provided to EchoStar contain a complete summary of all meetings of
directors and stockholders since the time of incorporation and reflect all
transactions referred to in such minutes accurately in all material respects,
and the records of each Subsidiary provided to EchoStar contain a complete
summary of all meetings of any managers and members since the time of
organization and reflect all transactions referred to in such records accurately
in all material respects.

         2.23 Title to Property and Assets. The property and assets of the
Company and each Subsidiary are owned by the Company or the Subsidiary, as the
case may be, free and clear of all mortgages, liens, loans and encumbrances,
except (i) as reflected in the Financial Statements, (ii) for statutory liens
for the payment of current taxes that are not yet delinquent, (iii) for liens,
encumbrances and security interests that arise in the ordinary course of
business and minor defects in title, none of which, individually or in the
aggregate, materially impair the Company's or any Subsidiary's ownership or use
of such property or assets and (iv) that the authorizations granted by the FCC
to the Company to construct, launch and operate Ka-band geostationary satellites
at 109.2 W.L. and 73 W.L. do not confer upon the Company any property rights in
such orbital locations or spectrum frequencies but do grant the Company
authority to use such orbital locations to the full extent granted by the
authorizations. With respect to the property and assets it leases, the Company
and each Subsidiary is in material compliance with such leases and, to its
knowledge, holds a valid leasehold interest free of any liens, claims or
encumbrances, subject to clauses (i)-(iii).

                                       9
<PAGE>   11

         2.24 Insurance. The Company has fire and casualty insurance policies
with such coverages in amounts (subject to reasonable deductibles) customary for
companies similarly situated.

         2.25 Employee Benefit Plans. Neither the Company nor any Subsidiary has
any Employee Benefit Plan as defined in the Employee Retirement Income Security
Act of 1974.

         2.26 Labor Agreements and Actions. Neither the Company nor any
Subsidiary is bound by or subject to (and none of its assets or properties is
bound by or subject to) any written or oral, express or implied, contract,
commitment or arrangement with any labor union, and no labor union has requested
or, to the Company's knowledge, has sought to represent any of the employees,
representatives or agents of the Company or any Subsidiary. There is no strike
or other labor dispute involving the Company or any Subsidiary pending, or to
the Company's knowledge, threatened, that could have a material adverse effect
on the assets, properties, financial condition, operating results or business of
the Company or any Subsidiary, nor is the Company aware of any labor
organization activity involving its employees. The Company is not aware that any
officer or key employee, or that any group of key employees, intends to
terminate their employment with the Company or any Subsidiary, nor does the
Company or any Subsidiary have a present intention to terminate the employment
of any of the foregoing. The employment of each officer and employee of the
Company or any Subsidiary is terminable at the will of the Company or the
Subsidiary, as the case may be. Neither the Company nor any Subsidiary is a
party to or bound by any currently effective employment contract, deferred
compensation agreement, bonus plan, incentive plan, profit sharing plan,
retirement agreement or other employee compensation agreement. To its knowledge,
the Company and each Subsidiary has complied in all material respects with all
applicable state and federal equal employment opportunity and other laws related
to employment.

         2.27 Eligibility to Hold Preferred Stock. The Company is not aware of
any fact which, upon consummation of the transactions contemplated hereby,
would: (a) make any of its current stockholders ineligible or unqualified to
hold shares of the Company's Preferred Stock under any material statute, law,
rule, regulation, instrument, order, judgment, writ, decree or contract,
including but not limited to the Communications Act of 1934, as amended, and the
rules and regulations of the FCC; or (b) render the Company ineligible or
unqualified to hold the authorizations granted to it by the FCC or, in the
Company's reasonable judgment, jeopardize the Company's ability to hold such
authorizations as a result of foreign ownership, criminal convictions or other
ground for forfeiture, cancellation or revocation under the rules and
regulations of the FCC or the imposition of a monetary forfeiture.

         3. Representations and Warranties of EchoStar. EchoStar hereby
represents, warrants and covenants that:

         3.1 Authorization. EchoStar has full power and authority to enter into
this Agreement, the Investor Rights Agreement and the Voting Agreement and each
such agreement constitutes its valid and legally binding obligation, enforceable
in accordance with its terms.

         3.2 Purchase Entirely for Own Account. This Agreement is made with
EchoStar in reliance upon EchoStar's representation to the Company, which by
EchoStar's execution of this

                                       10
<PAGE>   12

Agreement EchoStar hereby confirms, that the Units to be received by and the
Common Stock issuable upon conversion or exercise thereof will be acquired for
investment for EchoStar's own account, not as a nominee or agent, and not with a
view to the resale or distribution of any part thereof, and that EchoStar has no
present intention of selling, granting any participation in or otherwise
distributing the same. By executing this Agreement, EchoStar further represents
that it does not have any contract, undertaking, agreement or arrangement with
any person to sell, transfer or grant participations to such person or to any
third person, with respect to any of the Units.

         3.3 Disclosure of Information. EchoStar believes it has received all
the information it considers necessary or appropriate for deciding whether to
purchase the Units. EchoStar further represents that it has had an opportunity
to ask questions and receive answers from the Company regarding the terms and
conditions of the offering of the Units and the business, properties, prospects
and financial condition of the Company. Except to the extent that EchoStar has
actual knowledge that any representations or warranties of the Company are
untrue, the foregoing does not limit or modify the representations and
warranties of the Company in Section 2 of this Agreement or the right of
EchoStar to rely thereon.

         3.4 Investment Experience. EchoStar acknowledges that it can bear the
economic risk of its investment and has such knowledge and experience in
financial or business matters that it is capable of evaluating the merits and
risks of the investment in the Units. EchoStar also represents it has not been
organized for the purpose of acquiring the Units.

         3.5 Accredited Investor. EchoStar is an "accredited investor" within
the meaning of Securities and Exchange Commission ("SEC") Rule 501 of Regulation
D, as presently in effect.

         3.6 Restricted Securities. EchoStar understands that the Units it is
purchasing are characterized as "restricted securities" under the federal
securities laws inasmuch as they are being acquired from the Company in a
transaction not involving a public offering and that under such laws and
applicable regulations such Units may be resold without registration under the
Act only in certain limited circumstances. In the absence of an effective
registration statement covering the Units or an available exemption from
registration under the Act, the Units must be held indefinitely. In this
connection, EchoStar represents that it is familiar with SEC Rule 144, as
presently in effect, and understands the resale limitations imposed thereby and
by the Act, including without limitation, the fact that it may not be able to
sell the Units pursuant to Rule 144 unless current information about the Company
is available to the public. Such information is not now available and the
Company has no present plans to make such information available, provided
however, that the Company shall use reasonable good faith efforts to make such
information available once it is legally obligated to do so.

         3.7 Further Limitations on Disposition. EchoStar agrees to be bound by
the limitations on disposition contained in the Investor Rights Agreement.

         3.8 Legends. It is understood that the certificates evidencing the
Units may bear substantially the following legend in addition to any other
reasonably required legends:

                                       11
<PAGE>   13

         "These securities have not been registered under the Securities Act of
1933, as amended. They may not be sold, offered for sale, pledged or
hypothecated in the absence of a registration statement in effect with respect
to the securities under such Act or an opinion of counsel satisfactory to the
Company that such registration is not required or unless sold pursuant to Rule
144 of such Act."

         3.9 Tax Advisors. EchoStar has reviewed with its own tax advisors the
federal, state and local tax consequences of this investment, where applicable,
and the transactions contemplated by this Agreement. EchoStar is relying solely
on such advisors and not on any statements or representations of the Company or
any of its agents and understands that it (and not the Company) shall be
responsible for its own tax liability that may arise as a result of this
investment or the transactions contemplated by this Agreement.

         3.10 Eligibility to Hold Preferred Stock. EchoStar is not aware of any
fact which, upon consummation of the transactions contemplated hereby, would:
(a) make EchoStar ineligible or unqualified to hold the Units under any material
statute, law, rule, regulation, instrument, order, judgment, writ, decree or
contract, including but not limited to the Communications Act of 1934, as
amended, and the rules and regulations of the FCC; or (b) render the Company
ineligible or unqualified to hold the authorizations granted to it by the FCC
or, in EchoStar's reasonable judgment, jeopardize the Company's ability to hold
such authorizations as a result of foreign ownership, criminal convictions or
other ground for forfeiture, cancellation, revocation under the rules and
regulations of the FCC or the imposition of a monetary forfeiture.

         3.11 Right of First Offer. EchoStar acknowledges that certain
shareholders of the Company have rights to acquire securities of the Company in
connection with the transactions contemplated hereby ("Preemptive Securities").
EchoStar hereby agrees to vote all voting securities of the Company held by it,
if any, in favor of any amendment to the Company's Certificate of Incorporation
reasonably necessary in connection with the issuance of Preemptive Securities,
if any.

         4. [Intentionally Omitted].

         5. Conditions to Closing.

         5.1 Conditions of EchoStar's Obligations: The obligations of EchoStar
under subsection 1.1 of this Agreement are subject to the satisfaction by the
Company or waiver by EchoStar on or before the Closing of each of the following
conditions:

         (a) Representations and Warranties. The representations and warranties
of the Company contained in Section 2 shall be true in all material respects on
and as of the Closing with the same effect as though such representations and
warranties had been made on and as of the date of such Closing.

         (b) Performance. The Company shall have performed and complied with all
agreements, obligations and conditions contained in this Agreement that are
required to be performed or complied with by it on or before the Closing,
including without limitation, delivery of the Units.

                                       12
<PAGE>   14

         (c) Compliance Certificate. An authorized officer of the Company shall
deliver to EchoStar at the Closing a certificate stating that the conditions
specified in Sections 5.1(a) and 5.1(b) have been fulfilled.

         (d) Qualifications. All authorizations, approvals or permits, if any,
of any governmental authority or regulatory body of the United States or of any
state that are required in connection with the lawful issuance and sale of the
Units pursuant to this Agreement shall be duly obtained and effective as of the
Closing.

         (e) Proceedings and Documents. All corporate and other proceedings in
connection with the transactions contemplated at the Closing, and all documents
incident thereto shall be reasonably satisfactory in form and substance to
EchoStar, and they shall have received all such counterpart original and
certified or other copies of such documents as they may reasonably request.

         (f) Proprietary Information. Each employee of and consultant (excluding
outside counsel and auditors) to the Company shall have entered into a
Proprietary Information and Inventions Agreement.

         (g) Opinion of Company Counsel. EchoStar shall have received from
Brownstein Hyatt & Farber, P.C., counsel for the Company, an opinion, dated as
of the Closing, in the form attached as Exhibit C.

         (h) Investor Rights Agreement. The First Amendment shall have executed
by each party thereto (other than EchoStar) and delivered to EchoStar in
substantially the form attached as Exhibit D.

         (i) Voting Agreement. The Voting Agreement shall have executed and
delivered in substantially the form attached as Exhibit B.

         (j) Marketing, Joint Box Production and Warrants Agreement. The Company
shall have executed and delivered the Marketing, Joint Box Production and
Warrants Agreement in substantially the form attached as Exhibit E.

         5.2 Conditions of the Company's Obligations at Closing. The obligations
of the Company to EchoStar under this Agreement are subject to the fulfillment
on or before the Closing of each of the following conditions by EchoStar:

         (a) Representations and Warranties. The representations and warranties
of EchoStar contained in Section 3 shall be true in all material respects on and
as of the Closing, with the same effect as though such representations and
warranties had been made on and as of the Closing.

         (b) Payment of Purchase Price. EchoStar shall have delivered the
Purchase Price specified in Section 1.1 hereof.

         (c) Qualifications. All authorizations, approvals or permits, if any,
of any governmental authority or regulatory body of the United States or of any
state that are required in

                                       13
<PAGE>   15

connection with the lawful issuance and sale of the Units pursuant to this
Agreement shall be duly obtained and effective as of each of the Closing.

         (d) Investor Rights Agreement. EchoStar shall have executed and
delivered the First Amendment in substantially the form attached as Exhibit D.

         (e) Voting Agreement. EchoStar shall have executed and delivered the
Voting Agreement in substantially the form attached as Exhibit B.

         (f) Marketing, Joint Box Production and Warrants Agreement. EchoStar
shall have executed and delivered the Marketing, Joint Box Production and
Warrants Agreement in substantially the form attached as Exhibit E.

         6. Mandatory Redemption.

         (a) EchoStar, if it holds any Series D Shares after July 14, 2000, may
require the Company to redeem all but not less than all of such Series D Shares
at a redemption price per share (the "Redemption Value") equal to (i) $3.50 per
share plus (ii) simple interest on the Purchase Price ($50.0 million) from the
date of Closing to the Redemption Date (as defined below) at the rate of 9% per
annum by delivering written notice of such election to the Company on or before
August 14, 2000 (the "Redemption Notice"). Upon receipt of the Redemption
Notice, the Company shall call such Series D Shares for redemption as of a date
not later than 30 days after the date of the Redemption Notice (the "Redemption
Date").

         (b) For each Series D Share which is to be redeemed hereunder, the
Company, or its designee, shall be obligated on the Redemption Date to pay to
the holder thereof (upon surrender by such holder at the Company's principal
office of the certificate representing such share or transfer of such share to
the Company's designee, as determined by the Company in its sole discretion) an
amount in cash, via wire transfer, equal to the Redemption Value.

         7. Miscellaneous.

         7.1 Survival. The warranties, representations and covenants of the
Company and EchoStar contained in or made pursuant to this Agreement shall
survive the execution and delivery of this Agreement and the Closing and shall
in no way be affected by any investigation of the subject matter thereof made by
or on behalf of EchoStar or the Company.

         7.2 Successors and Assigns. Except as expressly set forth herein, no
party hereto shall assign any of its rights or obligations hereunder without the
prior written consent of each other party hereto, which consent shall not be
unreasonably withheld, conditioned or delayed. Subject to the foregoing, the
terms and conditions of this Agreement shall inure to the benefit of and be
binding upon the respective successors and assigns of the parties (including
transferees of any Units). Nothing in this Agreement, express or implied, is
intended to confer upon any party, other than the parties hereto or their
respective successors and assigns, any rights, remedies, obligations or
liabilities under or by reason of this Agreement, except as expressly provided
in this Agreement.

                                       14
<PAGE>   16

         7.3 Governing Law. This Agreement shall be governed by and construed
under the laws of the State of Colorado as applied to agreements among Colorado
residents entered into and to be performed entirely within Colorado. In the
event of a dispute hereunder, the parties agree that the Federal and state
courts of Colorado shall be the exclusive forum for the resolution of such
disputes.

         7.4 Titles and Subtitles. The titles and subtitles used in this
Agreement are used for convenience only and are not to be considered in
construing or interpreting this Agreement.

         7.5 Notices. All notices required or permitted hereunder shall be in
writing and shall be deemed effectively given: (i) upon personal delivery to the
party to be notified, (ii) when sent by confirmed telex or facsimile if sent
during normal business hours of the recipient, if not, then on the next business
day; (iii) five days after having been sent by registered or certified mail,
return receipt requested, postage prepaid; or (iv) one day after deposit with a
nationally recognized overnight courier, specifying next day delivery, with
written verification of receipt. All communications shall be sent to the address
as set forth on the signature page hereof or at such other address as such party
may designate by ten days advance written notice to the other parties hereto.

         7.6 Finder's Fee. Each party represents that it neither is nor will be
obligated for any finders' fee or commission in connection with this
transaction. EchoStar agrees to indemnify and to hold harmless the Company from
any liability for any commission or compensation in the nature of a finders' fee
(and the costs and expenses of defending against such liability or asserted
liability) for which EchoStar or any of its officers, partners, employees or
representatives is responsible. The Company agrees to indemnify and hold
harmless EchoStar from any liability for any commission or compensation in the
nature of a finders' fee (and the costs and expenses of defending against such
liability or asserted liability) for which the Company or any of its officers,
employees or representatives is responsible.

         7.7 Expenses. Irrespective of whether the Closing is effected, each of
the Company and EchoStar shall pay all costs and expenses that it incurs with
respect to the negotiation, execution, delivery and performance of this
Agreement.

         7.8 Amendments and Waivers. Any term of this Agreement may be amended
and the observance of any term of this Agreement may be waived (either generally
or in a particular instance and either retroactively or prospectively), only
with the written consent of the Company and EchoStar.

         7.9 Severability. If one or more provisions of this Agreement are held
to be unenforceable under applicable law, such provision shall be excluded from
this Agreement and the balance of the Agreement shall be interpreted as if such
provision were so excluded and shall be enforceable in accordance with its
terms.

         7.10 Entire Agreement. This Agreement and the documents referred to
herein constitute the entire agreement among the parties and no party shall be
liable or bound to any other party in any manner by any warranties,
representations or covenants except as specifically set forth herein or therein.

                                       15
<PAGE>   17

         7.11 Counterparts. This Agreement may be executed in two or more
counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.

         7.12 Attorneys' Fees. In the event that any dispute among the parties
to this Agreement should result in litigation, the prevailing party in such
dispute shall be entitled to recover from the losing party all fees, costs and
expenses of enforcing any right of such prevailing party under or with respect
to this Agreement, including without limitation, such reasonable fees and
expenses of attorneys and accountants, which shall include, without limitation,
all fees, costs and expenses of appeals.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                       16
<PAGE>   18

         IN WITNESS WHEREOF, the parties have executed this Agreement as of the
date first above written.

                                            iSKY, INC.

                                            By: /s/ David M. Brown
                                                --------------------------------

                                            Its: Vice President
                                                --------------------------------

                                   Address: 9137 East Mineral Circle, Suite 140
                                            Englewood, CO 80112

                                            EchoStar Communication Corporation

                                            By: /s/ Charles E. Ergen
                                                --------------------------------

                                            Its: Chief Executive Officer
                                                --------------------------------

                                   Address: 5701 South Santa Fe Drive
                                            Littleton, CO 80120

                [SIGNATURE PAGE TO SECURITIES PURCHASE AGREEMENT]

                                       17

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