Attachment demostration

This document pretains to SAT-AMD-20031118-00332 for Amended Filing on a Satellite Space Stations filing.

IBFS_SATAMD2003111800332_372571

ShawPittman LLP
A Limited Ltabhty Partnership lncludtng Professlonal Corporatlons




  Via Hand Delivery
  Ms. Marlene H. Dortch                                                                                JAN 2 3 2004
  Secretary

  445 12th Street, S.W.
  Washington, D.C. 20554

               Re:           Mobile Satellite Ventures Subsidiary LLC
                             Ex Parte Presentation
                             IB Docket No. 01-185
                             File No. SAT-MOD-20031118-00333 (ATC application)
                             File No. SAT-AMD-20031118-00332 (ATC application)
                             File No. SES-MOD-20031118-01879 (ATC application)
                             File No. SAT-AMD-20031118-00335 (replacement satellite application)

  Dear Ms. Dortch:

          On January 21, 2004, Mobile Satellite Ventures Subsidiary LLC ("MSV") provided a
  demonstration to International Bureau staff members of its techniques for mitigating self-
  interference from the operation of an Ancillary Terrestrial Component ("ATC"). The
  demonstration was held at MSV's headquarters in Reston, Virginia. The following International
  Bureau staff members attended: William Bell, Lisa Cacciatore, Richard Engelman, Howard
  Griboff, Paul Locke, Kathyrn Medley, Robert Nelson, and Ronald Repasi. The following
  attended on behalf of MSV: Carson Agnew, Lon Levin, Peter Karabinis, and Gary Churan, as
  well as Bruce Jacobs of Shaw Pittman LLP, counsel for MSV. MSV presented the information
  contained in the attached set of presentation materials.

               Please direct any questions regarding this matter to the undersigned.

                                                                          Very truly yours,




                                                                                                                           Washington, DC
                                                                                                                           Northern Virginia
                                                                                                                           New York
                                                                                                                           Los Angeles
2300 N Street, NW Washington, DC 20037- 1 1 28                      202.663.8000 Fax: 202.663.8007   www.showpittmon.com   London


ShawPittman LLP !
Ms. Marlene H. Dortch
January 22,2004
Page 2

cc:   William Bell
      Lisa Cacciatore
      Richard Engelman
      Howard Griboff
      Paul Locke
      Kathyrn Medley
      Robert Nelson
      Ronald Repasi


                             January 21, 2004




 — MSV
K
qum




      e Satellite Ventures


    Interference Mechanism



          A \
d
                                     Feeder Link




                   S, = d + aa   I


                                           Complex
                                           Coefficients
                                                                          output
               S, = d + aa
                                                          A-          -

                                                          -   +
                                                          @
               S, = pd + a
                     -       J
                                       I                      Error




                                 Adaptive Control
                                    Algorithm




Mobile Satellite Ventures



Document Created: 2004-05-12 14:06:15
Document Modified: 2004-05-12 14:06:15

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