Exhibit 10.79(a)
Amended Employment Agreement with Dr. Mati Wax

                          AMENDED EMPLOYMENT AGREEMENT

     As of  the  12th  day  of  January  1998,  the  employment  agreement  (the
"Employment  Agreement") dated the 7th day of July 1996 ("Employment  Date"), by
and  between  Dr.  Mati Wax,  residing  at 120  Reflections  Drive,  San  Ramon,
California  94583  (hereinafter  referred to as the  "Employee")  and  Labyrinth
Communication  Technologies  Group,  Inc.  ("Labyrinth") is hereby amended.  All
capitalized  terms  herein  refer to their  defined  meaning  as  defined in the
Employment Agreement, except as may be specifically defined herein.

                              W I T N E S S E T H :

         WHEREAS,  the  Company  has  undertaken  the  process of  merging  (the
"Merger")  Labyrinth  together  with and into  U.S.  Wireless  Corporation  (the
"Company"), the parent company of Labyrinth, in accordance with a share exchange
offer presented to the shareholders of Labyrinth whereby the Company will be the
sole surviving company; and

         WHEREAS,  as Labyrinth  shall cease to exist,  Employee shall become an
employee of the Company and in accordance therewith shall exchange his shares of
common stock of Labyrinth for shares of Common Stock of the Company,  subject to
a vesting  schedule,  in accordance with the amended  restricted share agreement
referenced herein; and

         WHEREAS,  the  Employee and the Company  desire to continue  Employee's
employment  with the  Company as Chief  Technology  Officer,  and in  accordance
therewith amends his Employment Agreement,  as described herein, which amendment
shall  supersede all prior  agreements  between the Company,  its  subsidiaries,
and/or predecessors, and the Employee;

         NOW, THEREFORE, it is mutually agreed by and between the parties hereto
as follows:

                                    ARTICLE I
                                   EMPLOYMENT

         Subject to and upon the terms and  conditions  of this  Agreement,  the
Company hereby retains Employee as Chief Technology Officer of the Company,  and
the  Employee  hereby  agrees to  continue  his  employment.  In this  capacity,
Employee will report  directly to the Chief  Executive  Officer and President of
the Company.

                                   ARTICLE II
                           DUTIES AND ACKNOWLEDGMENTS

     (A) The Employee shall, during the term of his employment with the Company,
and subject to the direction  and control of the  Company's  Board of Directors,
perform  such duties and  functions  related to his position as he may be called
upon to  perform by the  Company's  Board of  Directors  during the term of this
Agreement.

     (B) The Employee agrees to devote 100% of his normal business time, or such
less amount of his business  time as shall be agreed upon by the Company and the
Employee, to the Company. Employee shall use his best efforts in the performance
of his duties for the Company and in rendering  such services for any subsidiary
corporations of the Company.

     (C) The Employee shall perform,  in conjunction  with the Company's  Senior
Management,  to the best of his ability,  the following  services and duties for
the Company and its subsidiary  corporations (by way of example,  and not by way
of limitation):  (i) Those duties attendant to the position with the Company for
which he is hired;

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               (ii) Development of the Company's  RadioCamera and advanced radio
          front-end technology; and

               (iii) Formulation of the Company's business plans with respect to
          his area of  operations,  subject  to the  direction  of the  Board of
          Directors.

     (D)  Employee  acknowledges  that all  Intellectual  Property  (as  defined
herein)  developed or co-developed by the Employee during the Employee's  tenure
with  the  Company  shall  be the sole and  absolute  property  of the  Company.
Employee  agrees to facilitate and coordinate,  to the best of his ability,  the
safeguarding  of all  Intellectual  Property which is developed or  co-developed
during  Employee's  tenure  with the  Company.  Employee,  on behalf  and at the
request of the Company  shall  detail all  Intellectual  Property  developed  or
co-developed,  so that the  Company  may file the  appropriate  patents or other
filings in order to protect the Company's  ownership  rights in such properties.
Employee shall execute and deliver assignments of all rights and interest in any
Intellectual  Property  developed or co-developed  during Employee's tenure with
the  Company,  for the  Company's  records  and as needed  for  filing  with any
federal, state, city, local, or foreign government agency or authority.

     (E) Employee  represents  that he shall comply with all federal,  state and
local  securities  laws and shall have  prepared and filed with the  appropriate
agencies all required filings in a timely and efficient manner. Employee further
agrees to abide by the rules and regulations of the Company.

                                   ARTICLE III
                                  COMPENSATION

     (A) Commencing with the Employment Date, the Company has and shall continue
to pay to the  Employee a salary at the rate of $100,000  per annum,  during the
term of this  Agreement.  Salary shall be paid in equal monthly  installments or
pursuant to such  regular  pay periods as are adopted by the Company  (the "Base
Salary").  After the  initial  three year term this salary  shall be  negotiated
between the Company and the Employee.

     (B) The Company  shall  deduct from  Employee's  compensation  all federal,
state, and local taxes which it may now or may hereafter be required to deduct.

                                   ARTICLE IV
                                    BENEFITS

     (A) During the term hereof,  (i) the Company  shall  provide  Employee with
Blue Cross/Blue Shield or equivalent health insurance benefits and major medical
insurance;   and  (ii)  Employee   shall  be  reimbursed  by  the  Company  upon
presentation of appropriate  vouchers for all business  expenses incurred by the
Employee on behalf of the Company.

     (B) In the event the Company wishes to obtain Key Man life insurance on the
life of Employee,  Employee  agrees to cooperate  with the Company in completing
any applications  necessary to obtain such insurance and promptly submit to such
physical  examinations  and furnish such  information as any proposed  insurance
carrier may request.

     (C) For each year of the term hereof, Employee shall be entitled to fifteen
(15) days paid vacation.

     (D) Commencing July 1, 1998, Employee shall receive from the Company living
and travel  allowances  for the term of his  employment  with the  Company.  The
Company  shall pay to the  Employee  an annual  stipend  for living  expenses of
$13,000,  to be paid on a quarterly basis at the rate of $3,250 per quarter.  In
addition,  the Company  provide the  Employee a travel  allowance  of $7,000 per
annum, to be paid on a quarterly basis at the rate of $1,750 per quarter.

<PAGE>
                                    ARTICLE V
                                 NON-DISCLOSURE

     The Employee shall not, at any time during or after the  termination of his
employment hereunder, except when acting on behalf of and with the authorization
of the  Company,  make use of or disclose to any person,  corporation,  or other
entity,  for any  purpose  whatsoever,  any trade  secret or other  confidential
information  concerning the Company's business,  finances,  proposed and current
services and pricing,  and any  information  relating to the Company's  business
(collectively referred to as the "Proprietary Information"). For the purposes of
this  Agreement,   trade  secrets  and  confidential   information   shall  mean
information  disclosed to the Employee or known by him as a  consequence  of his
employment by the Company,  whether or not pursuant to this  Agreement,  and not
generally known in the industry, concerning the Company=s Intellectual Property,
business,  finances, methods,  operations,  marketing information,  pricing, and
information  relating to  proposed  expansion  of the  Company or the  Company's
business plans. The Employee  acknowledges that trade secrets and other items of
confidential information,  as they may exist from time to time, are valuable and
unique assets of the Company,  and that disclosure of any such information would
cause  substantial  injury to the  Company.  The  foregoing  is  intended  to be
confirmatory  of the  common  laws of the  states  of  California  and  Delaware
relating to trade secrets and confidential information.  AIntellectual Property"
means (a) all inventions  (whether patentable or unpatentable and whether or not
reduced  to  practice),  all  improvements  thereto,  and  all  patents,  patent
applications,   and  patent   disclosures,   together  with  all   re-issuances,
continuations,  continuations in-part, revisions, extensions, and reexaminations
thereof, (b) all trademarks, service marks, trade dress, logos, trade names, and
corporate names, together with all translations,  adaptations,  derivations, and
combinations  thereof and including all goodwill associated  therewith,  and all
applications,  registrations,  and  renewals in  connection  therewith,  (c) all
copyrightable works, all copyrights,  and all applications,  registrations,  and
renewals  in  connection  therewith  (d) all mask  works  and all  applications,
registrations,  and renewals in connection therewith,  (e) all trade secrets and
confidential  business information  (including ideas,  research and development,
know-how,  formulas,  compositions,  manufacturing and production  processes and
techniques,  technical data,  designs,  drawings,  specifications,  customer and
supplier lists,  pricing and cost information,  and business and marketing plans
and  proposals),   (f)  all  computer  software   (including  data  and  related
documentation),  (g) all  other  proprietary  rights,  and (h)  all  copies  and
tangible embodiments thereof (in whatever form or medium).

                                   ARTICLE VI
                              RESTRICTIVE COVENANTS

     (A) In the event of the Employee's  termination  with the Company,  whether
voluntarily or for cause, Employee agrees that he will not, for a period of four
years following such termination,  directly enter into or become associated with
or  engage in any other  business  (whether  as a  partner,  officer,  director,
shareholder,  employee, consultant, or otherwise), which business is a direct or
indirect  competitor  of the  Company,  or any  current  or  future  subsidiary,
associate,  affiliate or joint  venture  partner,  which is a direct or indirect
competitor of the Company, or any subsidiary or Parent company.

     (B) If any court  shall hold that the  duration of  non-competition  or any
other  restriction  contained  in this  paragraph  is  unenforceable,  it is our
intention  that same shall not thereby be terminated but shall be deemed amended
to delete  therefrom  such  provision  or portion  adjudicated  to be invalid or
unenforceable,  or in the alternative,  such judicially  substituted term may be
substituted therefor.

     (C) Employee agrees that during the term of this Restrictive  Covenant,  he
will not,  directly  or  indirectly,  (a)  contact,  induce,  or  influence  any
customers or clients, joint venture partners, employee, consultant, associate or
affiliate  of the  Company  or its  or  their  successors  with  respect  to the
Company=s  proposed  business  as  described  in (A)  above  or for  any  reason
whatsoever,  without the written consent of the Company, signed by two executive
officers; (b) request or advise any customers,  clients, joint venture partners,
suppliers,  manufacturers,  employees, consultants,  associates or affiliates of
the  Company or its or their  successors,  who may contact or attempt to contact
the Employee to withdraw,  curtail,  or cancel such  parties'  business with the
Company or its successors; (c) disclose to any other persons or corporations the
names or addresses of any of the  customers,  clients,  joint venture  partners,
suppliers,  manufacturers,  wireless services providers, employees, consultants,
associates,  or  affiliates  of the Company or its or their  successors;  or (d)
induce or encourage any employee to terminate his relationship with the Company.

<PAGE>
                                   ARTICLE VII
                                      TERM

     This  Agreement  shall be for an initial term of three years  commencing on
the Employment Date, subject to automatic extension,  as provided herein, unless
sooner terminated pursuant to the terms of Article VIII. After the initial term,
this Agreement  shall  automatically  renew for additional  periods of one year,
until such time as either Employee resigns,  the shares referenced in Article IX
have fully vested, or Employee is terminated in accordance with Article VIII.

                                  ARTICLE VIII
                         TERMINATION AND EFFECT THEREOF

     (A) The Company may terminate this Agreement:

               (i) Upon the death of  Employee  during the term  hereof,  except
          that the Employee's legal  representatives,  successors,  assigns, and
          heirs shall have those rights and  interests as otherwise  provided in
          this  Agreement,  including  the right to receive  accrued  but unpaid
          bonus compensation, if any.

               (ii) Upon  written  notice from the Company to the  Employee,  if
          Employee  becomes  totally  disabled  and as a  result  of such  total
          disability,  has been  prevented from and unable to perform all of his
          duties hereunder for a period of four (4) consecutive months.

               (iii) If the  Employee  engages  in  fraud,  misappropriation  of
          Company funds, or gross negligence in the performance of his duties.

               (iv) The  Company  shall have the right to  terminate  Employee's
          employment  hereunder  for  cause.  For  purposes  of this  Agreement,
          "cause"  means (a) a breach of the  covenants  herein,  (b) failure to
          perform his duties in a professional and competent manner; (c) failure
          by  Employee  to  substantially  perform  his  duties  or  obligations
          hereunder;  (d) Employee  engaging in  misconduct  which is materially
          injurious to the Company; (e) Employee engaging in any act that in any
          way has a direct,  substantial,  and adverse  effect on the  Company's
          reputation;  (f) Employee  committing a crime of moral turpitude;  (g)
          Employee's  conviction  by,  or  entry  of a plea  of  guilty  or nolo
          contendere  in,  a  court  of  competent   jurisdiction   of  a  crime
          constituting a felony.

     (B) Upon termination of this Agreement:

               (i)  Pursuant  to  subarticles  (A)(i),  (iii),  and (iv) of this
          Article VIII, Employee's employment hereunder and all compensation and
          benefits  payable  by  the  Company  hereunder  shall  be  immediately
          terminated.  In  addition,  all options  shall be  terminated  and all
          shares of Common Stock  issued  pursuant to Article IX, which have not
          vested in accordance  with the restricted  share  agreement,  shall be
          returned  to the  Company's  treasury.  All  vested  shares  shall  be
          delivered to the Employee or his estate,  as the case may be. Employee
          or his  estate,  as the case may be,  shall be entitled to receive any
          payments under any applicable life or disability  insurance  plans, if
          any are in effect at the time of termination.  Such payments,  if any,
          shall  be made at the  time  and in  accordance  with  the  terms  and
          conditions of such plans.

               (ii)  Pursuant  to  subarticle  (A)(ii),   Employee's  employment
          hereunder  shall  terminate,  all vested  options shall continue to be
          exercisable  for a period of six months  thereafter and all non vested
          options  shall  terminate.  In  addition,  all shares of Common  Stock
          issued  pursuant  to Article IX,  which have not vested in  accordance
          with  the  restricted  share  agreement,  shall  be  returned  to  the
          Company's  treasury.  All  vested  shares  shall be  delivered  to the



<PAGE>
          Employee  or his estate,  as the case may be.  (iii) In the event that
          the  employment is terminated  for any reason except as listed in this
          Article VIII,  the Employee shall have the right to receive his salary
          for the period from the date of his  termination  until the end of the
          initial  term  of the  agreement  as  described  in  Article  VII.  In
          addition,  all shares of Common Stock  issued  pursuant to Article IX,
          which  have  not  vested  in  accordance  with  the  restricted  share
          agreement,  shall be returned to the  Company's  treasury.  All vested
          shares shall be  delivered to the Employee or his estate,  as the case
          may be.

                                   ARTICLE IX
                 STOCK OPTIONS AND EXCHANGE OF LABYRINTH SHARES
                    FOR SHARES OF COMMON STOCK OF THE COMPANY

     (A) As an  inducement to Employee to enter into the  Employment  Agreement,
the Company  granted to Employee  options to  purchase  shares of the  Company's
Common  Stock,  $.001 par value per  share,  upon and  subject  to the terms and
conditions  of an option  agreement.  Employee  is  hereby  granted  options  to
purchase  100,000 shares of the Company's  Common Stock,  vesting at the rate of
1/3 per year  commencing  July 7, 1997.  The options shall be exercisable on the
dates of vesting and  continuing  until July 6, 2001.  The exercise price of the
options  shall be equal  to $2.00  per  share.  The  foregoing  options  are not
intended to qualify as incentive stock options.  The options provided for herein
are not transferable by Employee and shall be exercisable only by Employee or by
his legal representative or executor.

     (B) Labyrinth  issued  50,000 shares of its Common Stock on the  Employment
Date, subject to the terms and conditions of a restricted share agreement, which
agreement details a vesting schedule of 1/3 of the shares vesting each year, for
the  three  year  initial  term  of the  Employment  Agreement.  Subject  to the
consummation of the Merger, the Company shall issue 459,000 shares of its Common
Stock in exchange for the 50,000 shares of  Labyrinth,  subject to the terms and
conditions of an amended restricted share agreement dated as of this date.

                                    ARTICLE X
                         TERMINATION OF PRIOR AGREEMENTS

     This  Agreement  sets forth the entire  agreement  between  the parties and
supersedes all prior  agreements  between the parties,  whether oral or written,
without prejudice to Employee's right to all accrued  compensation  prior to the
effective date of this Agreement.

                                   ARTICLE XI
                                   ARBITRATION

     Any  dispute  arising  out  of  the  interpretation,   application,  and/or
performance of this Agreement with the sole exception of any claim,  breach,  or
violation  arising under Articles V or VI hereof shall be settled  through final
and binding arbitration before a single arbitrator in the City of San Ramon, the
State of  California in  accordance  with the rules of the American  Arbitration
Association. The arbitrator shall be selected by the Association and shall be an
attorney at law experienced in the field of corporate law. Any judgment upon any
arbitration  award  may be  entered  in any  court,  federal  or  state,  having
competent jurisdiction of the parties.

                                   ARTICLE XII
                                  SEVERABILITY

     If any provision of this Agreement shall be held invalid and unenforceable,
the remainder of this  Agreement  shall remain in full force and effect.  If any
provision  is  held  invalid  or   unenforceable   with  respect  to  particular
circumstances,   it  shall  remain  in  full  force  and  effect  in  all  other
circumstances.



<PAGE>
                                  ARTICLE XIII
                                     NOTICE

     All notices required to be given under the terms of this Agreement shall be
in writing and shall be deemed to have been duly given only if  delivered to the
addressee in person or mailed by certified mail,  return receipt  requested,  to
the address as included in the Company's records or to any such other address as
the party to receive the notice shall  advise by due notice given in  accordance
with this paragraph.

                                   ARTICLE XIV
                                     BENEFIT

     This  Agreement  shall  inure to, and shall be binding  upon,  the  parties
hereto,  the successors  and assigns of the Company,  and the heirs and personal
representatives of the Employee.

                                   ARTICLE XV
                                     WAIVER

     The waiver by either party of any breach or  violation of any  provision of
this  Agreement  shall not operate or be construed as a waiver of any subsequent
breach of construction and validity.

                                   ARTICLE XVI
                                  GOVERNING LAW

     This Agreement and each Option Certificate issued hereunder shall be deemed
to be a  contract  made  under  the laws of the  State of  Delaware  and for all
purposes  shall be construed in  accordance  with the laws of such State without
giving effect to the rules of said State governing the conflicts of laws.

                                  ARTICLE XVII
                                  JURISDICTION

     Any or all  actions or  proceedings  which may be brought by the Company or
Employee under this  Agreement  shall be brought in courts having a situs within
the State of California, and Employee hereby consents to the jurisdiction of any
local, state, or federal court located within the State of California, except in
those proceedings specifically referenced in Article XI herein.

                                  ARTICLE XVIII
                                ENTIRE AGREEMENT

     This Agreement contains the entire agreement between the parties hereto. No
change,  addition, or amendment shall be made hereto except by written agreement
signed by the parties hereto.

                                   ARTICLE XIX
                                  CONSTRUCTION

     The  parties  intend  for  the  provisions  of  Articles  V and VI of  this
agreement  to be  construed,  interpreted,  and  enforced to the maximum  extent
permitted  by law.  The  parties  acknowledge  and  agree  that  they  have both
participated in the  preparation of this Agreement,  and the Agreement shall not
be  construed  or  interpreted  against  either  party on the basis  that it was
prepared by such other party.  In the event that any  provision of Articles V or
VI,  or any  part  thereof,  shall  be  determined  by any  court  of  competent
jurisdiction to be invalid,  illegal,  or  unenforceable  in any respect for any
reason,   such  provision  shall  be  revised  and/or  interpreted  to  make  it
enforceable  to the maximum  extent in all other  respects as to which it may be
enforceable, all as determined by such court in such action.

     IN WITNESS  WHEREOF,  the parties  hereto have executed this  Agreement and
affixed their hands and seals the day and year first above written.

U.S. WIRELESS CORPORATION                                     EMPLOYEE


By:      Dr. Oliver Hilsenrath
         Chief Executive Officer                              Dr. Mati Wax