Attachment LightSquared - USGPS

This document pretains to SAT-MOD-20101118-00239 for Modification on a Satellite Space Stations filing.

IBFS_SATMOD2010111800239_862625

URIGINAL Ig LERMAN SENTER PLLC EX PARTE OR LATE FILED WASHINGTON, DC STEPHEN D. BARUCH 202.416.6782 SBARUCH@LERMANSENTER.COM January 21, 2011 By Hand Delivery JaAn 21 7011 Marlene H. Dortch 2 Apaataa Eederal Communications Commission Secretary 2o 2o Office of the Secretary Federal Communications Commission 445 Twelfth Street, S.W. Washington, D.C. 20554 Re: Notice of Written Ex Parte Presentation in LightSquared Subsidiary LLC Application for Modification of Authority for Ancillary Terrestrial Component, File No. SAT—MOD—20101118—00239 Dear Ms. Dortch: On January 19, 2011, representatives of the United States GPS Industry Council ("U.S. GPS IC") and several member companies held a teleconference with officials from the Commission‘s Office of Engineering and Technology, International Bureau, Public Safety and Homeland Security Bureau, and Wireless Telecommunications Bureau to discuss the results of empirical experimentation conducted by Garmin International ("Garmin") to assess the impact on GPS receivers operating in the 1559—1610 MHz band of fixed, high—power terrestrial broadband transmitters of the new, non—ancillary type LightSquared Subsidiary LLC ("LightSquared") first proposed in its above—referenced November 2010 application. The LightSquared application proceeding has been designated to have permit—but—disclose status for purposes of the Commission‘s ex parte rules. The U.S. GPS IC duly filed an ex parte notice of the teleconference on January 20, 2011, and provided a copy of the Garmin report, entitled Experimental Evidence of Wide Area GPS Jamming That Will Result from LightSquared‘s Proposal to Convert Portions of L Band 1 to High Power Terrestrial Broadband, that was discussed during the meeting. On January 21, 2011, the U.S. GPS IC made the attached written ex parte presentation to provide several pieces of information that Commission personnel requested during the January 19, 2011 teleconference. 2000 K STREET NW, SUITE 600 | WASHINGTON, DC 20006—1809 TEL 202.429.8970 | FAX 202.293.7783 | WWW.LERMANSENTER.COM

L Marlene H. Dortch January 21, 2011 5 _ Page 2 In accordance with Section 1.1206 of the Commission‘s Rules, 47 C.F.R. § 1.1206, two copies of this letter and its enclosure are provided for inclusion in the Commussion‘s files. Please direct any questions to me. Respectfully gubmitted, Counsel \¥or the United States GPS Industry Council Enclosure cc: (w/Enclosure): Julius Knapp, Chief, OET Ronald Repasi Michael Ha Mark Settle Robert Weller Robert Nelson Sankar Persaud Pat Amodio Paul Murray Tom Peters

United States S Industry Council *x usors «* January 21, 2011 Mr. Julius Knapp Chief Office of Engineering and Technology Federal Communications Commission 445 Twelfth Street, S.W. Washington, D.C. 20554 Re: Additional Information from U.S. GPS Industry Council in Response to Questions Posed During January 19, 2011 Teleconference Dear Mr. Knapp: During the January 19, 2011 teleconference representatives of the United States GPS Industry Council ("U.S. GPS IC") and several member companies had with officials from your Office, along with the Commission‘s International Bureau, Public Safety and Homeland Security Bureau, and Wireless Telecommunications Bureau to discuss the results of empirical experimentation conducted by Garmin International ("Garmin") to assess the impact on GPS receivers operating in the 1559—1610 MHz band of fixed, high—power terrestrial broadband transmitters of the new, non—ancillary type LightSquared Subsidiary LLC ("LightSquared") first proposed in its above—referenced November 2010 application, the U.S. GPS IC was asked to provide some additional information. We now provide the materials described below. Appendix 1 to this letter contains the notch filter response information requested during the teleconference. Appendices 2a and 2b to this letter contain the out—of—band characteristics of the LightSquared transmitter simulator used in the study presented in the Garmin report. The unmodulated carrier is presented in the figure in Appendix 2a, and the modulated signal is given by the figure in Appendix 2b. Please note that the high noise floor is explained by the fact that the laboratory where the study was done was not equipped with a tracking filter that could extend the spectrum analyzer‘s dynamic range. 2000 K Street, NW * Suite 600 « Washington, DC 20006—1809 Tel. (202) 416—6282

Mr. Julius Knapp January 21, 2011 Page 2 Finally, the characteristics of the GPS front end used in the Garmin niivi 265W receiver analyzed in the Garmin report are available for download at the following locations on the component manufacturer‘s web site: http://www.infineon.com/dgdl/BGM781N11.pdf?folderId= db3a30431f848401011fcbf2ab4c04c4&fileId=db3a304325 afd6e001261d7b53dd601e http://www.infineon.com/dgdl/AN184.pdf?folderld=db3a3 04313b8b5a60113044239297042f&fileId=db3a304326c276 8bQ0126dc4Qaf342f1f To the extent that you, your staff, or any of the Commission personnel on Wednesday‘s call have any questions regarding this material, please direct those questions to me and I will coordinate any further response. Respectfully submitted, //— ——- \ F. Michael Swiek Executive Director Enclosures cc: (w/ enclosures): Julius Knapp, Chief, OET Ronald Repasi Michael Ha Mark Settle Robert Weller Robert Nelson Sankar Persaud Pat Amodio Paul Murray Tom Peters

APPENDIX 1 4 E5071C Network Analyzer | | 1 Active Ch/Trace 2 Response 3 Stimulus4Mkr{Analysis 5Instr State > u@ We 10.00d8/ Rref —20.00 1 Ales@C Continuous Hold All Channels Continuous Disp Channels _Trigger Source _Internal Trigger Event On Sweep _ Trigger Scope All Channel Restart Teinmar Extihig—input_ Negative Edge Trigger Delay 0.0000 s Low Latency [1 ‘Center 157542 GHz

APPENDIX _ SENSETNT] _ |___ ALGNAUTO [10:16:53 AMJan 19, 2011 Avg Type: Log—Pwr Input: RF PNO: Fast ) Trig: Free Run Ayg|Hold: 313 PREAMP IFGain:Auto #Atten: 40 4B Select Trace’ Trace 1 Ref 0.00 dBm Clear Write “_;..:mn“,,..fi,.‘.‘“«:: 'jg | Trace Average Max Hold A | Min Hold f View/Blank § Trace On ! !usmyonlteiness Center 1.55250 GHz assalad Span 50.00 MHz More 1 of 3 #Res BW 100 Hz Sweep (FFT) ~16 s (1001 pts)

APPENDIX 2b | [musoe | SENSEINT | ALIGN AUTO |10:05:57 AM Jan 19, 2011 i{g3fagjple 3e 4u s y Avg Type: Log—Pwr Input: RF PNO: Fast G,) Trig: Free Run Ayg|Hold:>373 PREAMP IFGain:Auto #Atten: 40 dB RefLevel —20.00 dBm Ref —20.00 dBm Attenuation » [40 dB] esnt Scale/Div 10 dB Scale Type Log Lin Presel Center Presel Adjust 0 Hz 294 More Center 1.55250 GHz Span 50.00 MHz 1 of 2 #Res BW 100 Hz VBW 1.0 kHz Gooae etolne


Document Created: 2019-04-23 01:54:21
Document Modified: 2019-04-23 01:54:21
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