Document:

Exhibit 10.65
                                 PROMISSORY NOTE

$150,000

                                                             March 8, 1999
                                                             Fremont, California

For Value Received,  Michael Walley ("Borrower") hereby unconditionally promises
to pay to the order of SSE TELECOM, Inc., a Delaware corporation ("Lender"),  in
lawful money of the United States of America and in immediately available funds,
the  principal sum of One Hundred and Fifty  Thousand  Dollars  ($150,000)  (the
"Loan").

1. Principal  Repayment.  The outstanding  principal amount of the Loan shall be
fully due and payable on March 8, 2000 ("Maturity Date").

2. Accelerated Principal Repayment.

(a)  Borrower  may prepay the  outstanding  principal  amount of the Loan at any
     time before the Maturity Date without penalty.

(b)  In the  event  Borrower's  relationship  with  the  Lender,  whether  as an
     employee,  director  or  consultant,  terminates  for any  reason  prior to
     payment in full of this Note the outstanding  principal shall accelerate in
     full  and such  outstanding  principal  shall  become  immediately  due and
     payable as of the date of the termination of such relationship.

3. Place of  Payment.  All  amounts  payable  hereunder  shall be payable at the
office of Lender, 47823 Westinghouse Drive, Fremont, California,  unless another
place of payment shall be specified in writing by the Lender.

4.  Default.  Each of the  following  events  shall  be an  "Event  of  Default"
hereunder:

(a)  Borrower  fails to pay  timely any or the  principal  amount due under this
     Note on the  date the same  becomes  due and  payable  or  within  five (5)
     business days thereafter.

(b)  Borrower  files any  petition  or action for relief  under any  bankruptcy,
     reorganization,  insolvency  or  moratorium  law or any  other  law for the
     relief of , or relating to, debtors,  now or hereafter in effect,  or makes
     any assignment  for the benefit of creditors or takes any corporate  action
     in furtherance of any of the foregoing; or

(c)  An involuntary  petition is filed against Borrower (unless such petition is
     dismissed  or  discharged  within  twenty  (20) or  more  days)  under  any
     bankruptcy  statute now or hereafter in effect,  or a custodian,  receiver,
     trustee,  assignee for the benefit of creditors (or other similar official)
     is  appointed  to take  possession,  custody or control of any  property of
     Borrower.

Upon the  occurrence  of an Event of  Default  hereunder,  all  unpaid and other
amounts owing  hereunder,  including all  reasonable  attorneys'  fees and court
costs incurred by the Lender in enforcing this Note shall,  at the option of the
Lender,  and,  in the case of an Event of Default  pursuant to (b) or (c) above,
automatically, be immediately due, payable and collectible by lender pursuant to
applicable law.

5.  Waiver.  Borrower  waives  presentment  and  demand for  payment,  notice of
dishonor, protest and notice of protest of this Note, and shall pay all costs of
collection when incurred,  including, without limitation,  reasonable attorneys'
fees, costs and other expenses.

The right to plead  any and all  statutes  of  limitations  as a defense  to any
demands hereunder is hereby waived to the full extent permitted by law.

6. Costs.  The holder  hereof  shall be entitled to recover and the  undersigned
agrees to pay when  incurred all costs and expenses of  collection of this Note,
including without limitation, reasonable attorneys' fees.

<PAGE>

7.  Governing Law. This Note shall be governed by, and construed and enforced in
accordance with, the laws of the State of California, excluding conflict of laws
principles that would cause the application of laws of any other jurisdiction.

8. Tax.  Borrower  hereby agrees and authorizes  Lender to withhold from payroll
and any other amounts  payable to you, any sums required to satisfy the federal,
state, local, and foreign tax withholding  obligations of the Lender which arise
in connection with your Note. Borrower recognizes that he should confer with the
appropriate tax advisors regarding the reporting of income.

9.  Successors  and  Assigns.  The  provisions  of this Note shall  inure to the
benefit of and be binding on any  successor  to Borrower and shall extend to any
holder hereof.

10  Amendment.  Any term of this Note may be amended or waived  with the written
consent of Borrower and Lender

BORROWER                                              MICHAEL  WALLEY
                                                      /s/ Michael Walley

                                       46EXHIBIT 10.65.1

                       AMENDMENT NO. 1 TO PROMISSORY NOTE

         This AMENDMENT NO. 1 (the  "Amendment")  is made and entered into as of
March 8,  2000,  by and  between  SSE  TELECOM,  INC.,  a  Delaware  corporation
("Lender") and GEORGE M. WALLEY (the "Borrower").

         WHEREAS,  Lender issued to Borrower a Promissory Note dated as of March
8, 1999 (the "Note"); and

         WHEREAS,  Lender and Borrower  agree to amend  certain  sections of the
Note as set forth below.

         NOW, THEREFORE BE IT RESOLVED, Lender and Borrower agree as follows:

1.       Amendment.  Section 1 of the Note is hereby amended and restated in its
         entirety to read as follows:

                  Principal Repayment.  The outstanding  principal amount of the
                  Loan shall be subject to scheduled repayments on the dates and
                  in the amounts listed below.

                            Repayment Date               Repayment Amount
                            --------------               ----------------
                             March 8, 2000               $125,000.00 (Paid)

                           December 31, 2001             $25,000.00

2.       Miscellaneous.

2.1      This  Amendment  shall be  appended to the Note and deemed to be a part
         thereof.

2.2      Except as modified by this  Amendment,  the Note  remains in full force
         and effect.

2.3      This Amendment may be executed in counterparts  with the same force and
         effect as if each of the signatories had executed the same document.

         IN  WITNESS  WHEREOF,  Lender  and  Borrower  have duly  executed  this
Amendment as of the day and year first set forth above.

                                    SSE TELECOM, INC.

                                    By:
                                         ---------------------------------------

                                    Name:  Lee Blachowicz
                                        ----------------------------------------

                                    Title:  President and CEO
                                            ------------------------------------

By:
     ---------------------------------------
Name:  Michael Walley

                                       47EXHIBIT 10.66

                                 PROMISSORY NOTE

$40,000                                                          August 21, 2000
                                                             Fremont, California

         For Value Received,  Daryl Mossman ("Borrower") hereby  unconditionally
promises  to pay to the  order of SSE  Telecom,  Inc.,  a  Delaware  corporation
("Lender"),  in lawful money of the United States of America and in  immediately
available  funds,  the principal sum of Forty  Thousand  Dollars  ($40,000) (the
"Loan").

         1.       Principal Repayment.  The outstanding  principal amount of the
                  Loan  shall  be fully  due and  payable  on  August  21,  2002
                  ("Maturity Date")

         2.       Accelerated Principal Repayment.

                  (a)      Borrower may prepay the outstanding  principal amount
                           of the  Loan at any time  before  the  Maturity  Date
                           without penalty.

                  (b)      In the event Borrower's relationship with the Lender,
                           whether  as  an  employee,  director  or  consultant,
                           terminates for any reason prior to payment in full of
                           this Note the outstanding  principal shall accelerate
                           in full and such  outstanding  principal shall become
                           immediately  due and  payable  as of the  date of the
                           termination of such relationship.

         3.       Place Of  Payment.  All  amounts  payable  hereunder  shall be
                  payable  at the office of Lender,  47823  Westinghouse  Drive,
                  Fremont,  CA 94539,  unless  another place of payment shall be
                  specified in writing by Lender.

         4.       Default.  Each of the  following  events shall be an "Event of
                  Default" hereunder:

                  (a)      Borrower  fails to pay  timely  any of the  principal
                           amount  due  under  this  Note on the  date  the same
                           becomes due and  payable or within five (5)  business
                           days thereafter;

                  (b)      Borrower files any petition or action of relief under
                           any   bankruptcy,   reorganization,   insolvency   or
                           moratorium law or any other law for the relief of, or
                           relating to, debtors,  now or hereafter in effect, or
                           makes any  assignment for the benefit of creditors or
                           takes any corporate  action in  furtherance of any of
                           the foregoing; or

                  (c)      An  involuntary  petition is filed  against  Borrower
                           (unless  such  petition is  dismissed  or  discharged
                           within twenty (20) days) under any bankruptcy statute
                           now or hereafter in effect, or a custodian, receiver,
                           trustee,  assignee for the benefit of  creditors  (or
                           other   similar   official)   is  appointed  to  take
                           possession,  custody of control  of any  property  of
                           Borrower.

                  Upon the  occurrence  of an Event of  Default  hereunder,  all
                  unpaid principal and other amounts owing hereunder,  including
                  all  reasonable  attorney's  fees and court costs  incurred by
                  Lender in enforcing this Note shall,  at the option of Lender,
                  and, in the case of an Event of Default pursuant to (b) or (c)
                  above,   automatically,   be  immediately   due,  payable  and
                  collectible by Lender pursuant to applicable law.

                                       48
<PAGE>

         5. Waiver. Borrower waives presentment and demand of payment, notice of
dishonor, protest and notice of protest of this Note, and shall pay all costs of
collection when incurred,  including, without limitation,  reasonable attorney's
fees, costs and other expenses

The right to plead  any and all  statutes  of  limitations  as a defense  to any
demands hereunder is hereby waived to the full extent permitted by law.

         6.  Costs.  The holder  hereof  shall be  entitled  to recover  and the
undersigned  agrees to pay when incurred all costs and expenses of collection of
this Note, including without limitation, reasonable attorney's fees.

         7.  Governing  Law.  This Note shall be governed by, and  construed and
enforced in  accordance  with,  the laws of the State of  California,  excluding
conflict  of laws  principles  that would cause the  application  of laws of any
other jurisdiction.

         8.       Tax.  Borrower hereby agrees and authorizes Lender to withhold
                  from payroll and any other  amounts  payable to the  Borrower,
                  any sums required to satisfy the federal,  state,  local,  and
                  foreign tax withholding  obligations of the Lender which arise
                  in connection with the Borrower's  Note.  Borrower  recognizes
                  that he  should  confer  with  the  appropriate  tax  advisors
                  regarding the reporting of this income.

         9.       Successors  and  Assigns.  The  provisions  of this Note shall
                  inure to the  benefit of and be binding  on any  successor  to
                  Borrower and shall extend to any holder hereof.

         10.      Amendment. Any term of this Note may be amended or waived with
                  the written consent of Borrower and Lender.

                    BOROWER DARYL MOSSMAN

                    By:_____________________________________

                    Print Name:______________________________

                    OFFICER OF LENDER

                    By:_____________________________________

                    Print Name:______________________________

                                       49

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