Document:

<PAGE>

                                                                  Exhibit 10.28

                      FIRST AMENDMENT TO PURCHASE AGREEMENT

         This First amendment to the Purchase Agreement (this "AMENDMENT") is
made and entered into as of September _____, 2000, by and between Hispanic
Television Network, Inc. ("BUYER") and Johnson Broadcasting of Dallas, Inc.
("SELLER", and collectively with Buyer, the "PARTIES"). Unless otherwise
defined herein, all capitalized terms have the meanings assigned to them in
the Purchase Agreement (as defined below).

         WHEREAS, the parties have entered into a Purchase and Sale Agreement
for the Sale of KLDT-TV, Channel 55, Lake Dallas, Texas, dated April ____,
2000 (the "PURCHASE AGREEMENT");

         WHEREAS, Section 20.6 of the Purchase Agreement provides that the
Purchase Agreement may be amended in a writing between the parties; and

         WHEREAS each of the undersigned desire to amend the Purchase
Agreement in certain respects as more particularly described below.

         NOW, THEREFORE, in consideration of the recitals set forth above and
other good and valuable consideration contained herein, the receipt and
sufficiency of which are hereby acknowledged by the Parties hereto, and
intending to be legally bound, the Parties agree as follows:

         1. The definition of Closing Date in Section 1.1 is amended and
restated in its entirety to read as follows:

         " "CLOSING DATE" means a time and business date to be selected by
Buyer, which date shall not be later than (i) two (2) calendar days after the
FCC order(s) approving the Assignment Applications contemplated by this
Agreement have become Final Order(s), (unless waived by Buyer pursuant to
Section 3.2 hereof, or (ii) October 31, 2000, unless extended pursuant to the
provisions of Section 19 hereof."

         2. Section 19.2 is amended and restated in its entirety to read as
follows:

                  "19.2. First Extension. Buyer shall have the right to
extend the Closing Date until November 30, 2000 upon a payment of $1,000,000
in cash to Seller as an additional deposit (making the total deposit
$3,150,000)."

         3. Section 19.3 is amended and restated in its entirety to read as
follows:

                  "19.3. Second Extension. Buyer shall have the right to
extend the Closing Date until December 31, 2000 upon payment of an additional
deposit of $1,000,000 in cash (making the total deposit $4,150,000)."

<PAGE>

         4. As consideration in part for entering into this Amendment, Buyer
agrees to pay to Seller an amount in cash of $250,000 (the "EXTENSION
PAYMENT") substantially simultaneously with the execution of this Amendment.
Buyer hereby acknowledges receipt of the Extension Payment.

         5. As consideration in part for entering into this Amendment, the
Parties agree to enter into a Registration Rights Agreement with each other
in the form of Exhibit A attached hereto.

         6. Capitalized terms used without definition in this Amendment have
the meanings set forth in the Purchase Agreement.

         7. This Amendment may be executed in any number of counterparts,
each of which will be deemed to be an original, but all of which will
constitute one and the same instrument.

         8. Except as specifically amended by this Amendment, the Purchase
Agreement shall remain in full force and effect. This Amendment shall be
binding upon and shall inure to the benefit of the parties hereto and their
successors and any permitted assigns. This Amendment shall be governed by and
construed in accordance with the laws of the State of Texas (without regard
to the conflicts-of-law principles thereof).

                            [SIGNATURE PAGE FOLLOWS]

<PAGE>

IN WITNESS WHEREOF, the parties have executed, Amendment to be effective this
___ day of September, 2000.

                                     HISPANIC TELEVISION NETWORK, INC.

                                     By:      /s/ MARCO CAMACHO
                                              ---------------------------
                                              Marco Camacho
                                              Chief Executive Officer

                                     JOHNSON BROADCASTING OF DALLAS, INC.

                                     By:       /s/ DOUGLAS R. JOHNSON
                                               ----------------------------
                                               Douglas R. Johnson
                                               President<PAGE>

                                                                  Exhibit 10.29

                               SECOND AMENDMENT TO
                           PURCHASE AND SALE AGREEMENT

THIS SECOND AMENDMENT (this "Amendment") to that certain Purchase and Sale
Agreement dated April 24, 2000 by and between Hispanic Television Network,
Inc. and Johnson Broadcasting of Dallas, Inc., "the "Purchase Agreement") is
executed on December 7, 2000, but is made effective as of October 31, 2000
(the "Effective Date'"). Unless otherwise defined herein, all capitalized
terms have the meanings assigned to them in the Purchase Agreement.

Recitals

WHEREAS, the Parties entered into that certain First Amendment to the
Purchase Agreement on September 29, 2000 (the "First Amendment"), which among
other things, amended the definition of Closing Date.

WHEREAS, Seller has given notice to Buyer that Buyer is in default under the
Purchase Agreement, as amended by the First Amendment, and Buyer wishes to
cure such default pursuant to the terms of this Amendment.

WHEREAS, Seller does not desire to terminate the sale process and is willing
to resolve Buyer's default and amend the Purchase Agreement to provide for an
extension of the Closing date upon the terms set forth in this Amendment.

WHEREAS, each of the undersigned desire to revoke the First Amendment and to
amend the Purchase Agreement in certain respects as more particularly
described below.

                                                  AGREEMENT

NOW, THEREFORE, in consideration of the recitals set forth above and other
good and valuable consideration contained herein, the receipt and sufficiency
of which are hereby acknowledged by the Parties hereto, and intending to be
legally bound, the Parties agree as follows:

1. Resolution of Default. To resolve Buyer's default, Buyer agrees and
acknowledges that Seller shall be entitled to retain all consideration
(including, but not limited to, cash and stock) given by Buyer to Seller on
or prior to the date hereof. Buyer hereby covenants, assigns and transfers to
Seller all right title and: interest in, and forever releases, forfeits and
disclaims any right or claim to, all such consideration.

2. Issuance of Extension Shares. As consideration for this Amendment, Buyer
will transfer to Seller one million (1,000,000) shares (the "Extension
Shares") of newly issued Buyer Common Stock concurrently with the execution
of this Agreement. Buyer

<PAGE>

represents and warrants to Seller that, upon issuance, the Extension Shares
will be duly authorized, fully paid, non-assessable and validly issued. With
respect to the Extension Shares, Seller reaffirms to Buyer those
representations and warranties set forth in Section 4.16 of the Purchase
Agreement. Each party acknowledges that the Extension Shares will contain the
following stock legend:

         "The shares represented by this Certificate have not been registered
under the Securities act of 1933 (the "Act") and are "restricted securities"
as that term is defined in Rule 144 under the Act. The shares may not be
offered for sale, sold or otherwise transferred except pursuant to an
effective registration statement under the Act or pursuant to an exemption
from registration under the Act, the availability of which is to be
established to the satisfaction of the Company"

         3. Mutual Release of all Previous Claims. Each of Buyer and Seller,
on behalf of itself and its affiliates, shareholders, agents, directors,
employees, successors and assigns hereby completely and forever releases,
acquits and discharges the other party and its affiliates, stockholders,
agents, directors, employees, successors and assigns, of and from any and all
obligations, claims, demands, rights, liabilities, suits or causes of action
of any kind whatsoever, whether known or unknown, in contract or tort, at
common law or by statute or otherwise, that such party has or may have or may
hereafter claim to have, against the other party for acts or omissions on or
prior to the Effective Date arising out of or related to the Purchase
Agreement.

         4. Definition of "Closing Date." The definition of "Closing Date" in
Section 1.1 of the Purchase Agreement, as amended and restated in the First
Amendment, is hereby further amended and restated in its entirety to read as
follows:

         "CLOSING DATE" means a time and business date to be selected by
Buyer, which date shall not be later than February 12, 2001, 5:00 p.m. CST."

         5. Increase in Purchase Price. Section 2.2.4(a) of the Purchase
Agreement is amended and restate din its entirety to read as follows:

                  "(a) PAYMENT OF ESTIMATED PURCHASE PRICE AT CLOSING. At
                  Closing, Buyer will pay to Seller by wire transfer of
                  immediately available funds an aggregate amount equal to (I)
                  $35,000,000, as adjusted (up or down) by the estimated Closing
                  adjustments pursuant to Section 2.2.3(b), LESS (ii) the value
                  of the Extension Shares as determined by averaging the closing
                  sales price per share of Buyer Common Stock as quoted on the
                  Nasdaq Stock Market over the 30 days immediately prior to the
                  Closing; provided, however, in no event will the value of the
                  Extension Shares exceed $2,000,000 for purposes of this
                  Section 2.2.4(a)."

<PAGE>

         6 . Recourse. Sections 19.1, 19.2 and 19.3 of the Purchase Agreement
are deleted in their entirety. Section 19.4 of the Purchase Agreement is
amended and restated in its entirety to read as follows:

         "19.4.   SELLER'S RECOURSE. In the event this Agreement is terminated
                  other than pursuant to Sections 17.3 or 17.5 hereof, Seller
                  shall be entitled to retain the Extension Shares, as
                  liquidated damages, which shall be the Seller's sole and
                  exclusive remedy under this Agreement for such termination and
                  any breach by Buyer of the representation, warranty,
                  termination or condition of this Agreement. Buyer and Seller
                  agree that the harm caused by any breach of any
                  representation, warranty, or condition of this Agreement by
                  Buyer would be difficult to estimate and that the retention by
                  Seller of the Extension Shares is a reasonable forecast of
                  just compensation for any such breach. The remedy specified in
                  this Section 19.4 is intended to be the sole remedy to Seller
                  for breach by Buyer of any representation, warranty, or
                  condition of this Agreement arising or occurring on or prior
                  to the earlier of the Closing Date or the date of termination.
                  Buyer and Seller irrevocably agree not to contest or limit in
                  any manner whatsoever the enforcement of this Section 19.4."

         7. Pre-Closing Remedies. Section 20.16 of the Purchase Agreement is
amended and restated in its entirety to read as follows:

                  "20.16. PRE-CLOSING REMEDIES. The remedies specified in
                  Section 20.16.1 and Section 20.16.2 are intended to be the
                  sole remedies to Buyer for breach by Seller of any
                  representation, warranty, or condition of this Agreement
                  arising or occurring on or prior to the earlier of the Closing
                  Date or the date of termination. Buyer expressly releases and
                  waives its rights to all other remedies.

                  20.16.1. BUYER'S RIGHT TO ENJOIN; SPECIFIC PERFORMANCE. Seller
                  irrevocably acknowledges that the Station Licenses and
                  Broadcasting Assets constitute unique and irreplaceable
                  assets. Seller further irrevocably acknowledges that the
                  benefits to be derived by Buyer from the transactions
                  contemplated by this Agreement are equally unique and
                  irreplaceable. Accordingly, if Seller improperly abandons or
                  improperly terminates this Agreement, Buyer would not have an
                  adequate remedy at law. Therefore, Buyer shall be entitled to
                  a court order (a) enjoining any action or a transaction that
                  could reasonably be expected to constitute a breach of this
                  Agreement, including but not limited to any act or transaction
                  that could reasonably be expected to constitute a breach of
                  Section 7.1.10, and (b) requiring Seller to perform this
                  Agreement and to consummate the transactions contemplated by
                  this Agreement in

<PAGE>

                  accordance with the specific terms of this Agreement. However,
                  Buyer shall be entitled to maintain an action for specific
                  performance under this Section 20.16.1 only if Buyer deposits
                  in escrow on or before the Closing Date with Coamerica
                  Bank-Texas (or any court of competent jurisdiction) the amount
                  specified in Section 2.2.4(a) of the Purchase Agreement. Such
                  amount must remain in escrow with Coamerica Bank-Texas (or any
                  court of competent jurisdiction) during the enforcement of
                  this Section 20.16.1. If Buyer files an action under this
                  Section 20.16.1, and then fails to deposit the amount
                  specified in Section 2.2.4(a) of the Purchase Agreement in
                  escrow with Coamerica Bank-Texas or any court of competent
                  jurisdiction) on or before the Closing Date, Buyer shall
                  dismiss any such action with prejudice. Buyer and Seller
                  irrevocably agree not to contest or limit in any manner
                  whatsoever the enforcement of this Section 20.16.1. Seller
                  shall not be entitled to the remedies of injunctive relief
                  and specific performance specified in this Section 20.16.1.

                  20.16.2. LIMITATION OF BUYER'S PRE-CLOSING DAMAGES. Without
                  limiting in any manner whatsoever the availability of Buyer's
                  remedies of injunctive relief and specific performance
                  specified in Section 20.16.1, Buyer irrevocably agrees that
                  any monetary damages associated with Seller's improperly
                  abandoning or improperly terminating this Agreement or any
                  other pre-closing cause of action or claim shall be limited to
                  Seller's return to Buyer of the Extension Shares. Buyer and
                  Seller irrevocably agree not to contest or limit in any manner
                  whatsoever the enforcement of this Section 20.16.2. Each party
                  acknowledges and agrees that nothing in this Section 20.16.2
                  will affect in any manner whatsoever such party's liability
                  under Section 15."

         8. FCC Filings. Seller agrees to cooperate with Buyer in filing with
the Federal Communications Commission any necessary requests or extensions of
time to consummate the transactions contemplated by the Purchase Agreement, as
hereby amended.

         9. Counterparts. This Amendment may be executed in any number of
counterparts, each of which will be deemed to be an original, but all of which
will constitute one and the same instrument.

         10. Controlling Provisions. This Amendment is entered into pursuant
to Section 20.6 of the Purchase Agreement and shall amend the Purchase
Agreement to the extent expressly provided in this Amendment. The Purchase
Agreement, except as amended hereby, is and shall remain in full force and
effect. In the event of a conflict of the terms of this Amendment and the
Purchase Agreement, the terms of this Amendment shall control.

<PAGE>

         11. Successors and Assigns; Governing Law. This Amendment shall be
binding upon and shall inure to the benefit of the parties hereto and their
successors and any permitted assigns. This Amendment shall be governed by and
construed in accordance with the laws of the State of Texas (without regard
to the conflicts-of-law principles thereof).

         12. Time is of the Essence. Time is of the essence in the
performance of this Amendment and all dates and periods specified in this
Amendment and the Purchase Agreement. Notwithstanding any provision to the
contrary in this Amendment or the Purchase Agreement, no party will be
entitled to any time period in which to cure any breach of a representation
or warranty or to cure the non-performance of any covenant, agreement or
obligation. This Amendment and the Purchase Agreement shall automatically
terminate without the requirement of notice to either party, if the deposit
specified in Section 20.16.1 has not been made by February 12, 2001 at 5:00
CST.

         IN WITNESS WHEREOF, the parties have executed this Amendment to be
effective as of the Effective date.

                        Hispanic Television Network, Inc.

                        By:     /s/ MARCO CAMACHO
                             ----------------------------------
                                 Marco Camacho, its Chief Executive Officer

                        Johnson Broadcasting of Dallas, Inc.

                        By:     /s/ DOUGLAS R. JOHNSON
                            ----------------------------------
                                 Douglas R. Johnson, its President

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00024-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00024-of-00352.parquet"}]]