Attachment 2002Mobile-req confi

This document pretains to SAT-ASG-20010302-00017 for Assignment on a Satellite Space Stations filing.

IBFS_SATASG2001030200017_869611

‘ EX PARTE OR Lare p _’“ ~RomPustoO ic n| leNat ShawPittman ur ( | on wreamause ony | A Limited Liability Partnership Including Professional Corporations February 6, 2002 RcCEye M f=t is “ E_‘$ Via Hand Delivery 5 Mr. William F. Caton HEP —~‘ 6 20072 Acting Secretary meunommuneAon comabaes Federal Communications Commission — = qemes on me secrerany i8 445 12th Street, S.W. Washington, D.C. 20554 Re: § 0.459 —REQUEST FOR CONFIDENTIAL TREATMENT Mobile Satellite Ventures Subsidiary LLC Ex Parte Presentation File No. SAT—ASG—20010302—00017; File No. SAT—WAV—20010302—00018; File No. SAT—AMD—20010302—00019; Dear Mr. Caton: On February 5, 2002, Carson Agnew, Managing Director; Peter Karabinis, Chief Technical Officer; Lon Levin, Vice President and Regulatory Counsel; Gary Churan, Director, Mobile Terminal Engineering; Dick Evans, Senior Scientist; and Serge Nguyen, Director, Engineering; all of Mobile Satellite Ventures Subsidiary LLC ("MSV"), along with Tom Sullivan of Sullivan Telecommunications Associates, and Bruce Jacobs and David Konczal of Shaw Pittman LLP, counsel to MSV, met Ira Keltz, Julius Knapp, Geraldine Matise, and Gary Thayer of the Office of Engineering and Technology. During the meeting, MSV presented information contained in a set of presentation materials. With the exception of page 10, MSV has filed these presentation materials in the above—captioned proceeding. Pursuant to Section 0.459 of the Commussion‘s rules, MSV hereby requests confidential treatment of page 10 of these presentation materials, which is attached hereto. This page contains information relating to the ongoing international L—band frequency coordination process which is confidential among the parties to that coordination. The Commission has recently acknowledged the confidentiality of information relating to this coordination process.I Pursuant to new procedures adopted by the Commission on October 17, 2001, the attached confidential information is not filed in a sealed envelope. See "FCC Announces Changes in Filings Procedures," Public Notice, DA 01—2430 (Oct. 17, 2001). MSV understands f Comsat Corporation, et al., File No. ITC—97—222, FCC 01—272, Memorandum Opinion, Order and Authorization, at °[ 106—107 (Oct. 9, 2001). 2 Noa, of Copiss rec‘d f Ts V“QSM pakekn List A 5 CB E Washington, DC ,!.f N°PUBUGM Northern Vi;ginia New York Los Angeles 2300 N Street, NW 5%fl“fim1281 im ~40f 5§3.8000 Fax: 202.663.8007 www.shawpittman.com London

*% ShawPittman ur Mr. William F. Caton February 6, 2002 Page 2 that, as stated in the Public Notice, Commuission staff will place the attached information in an envelope marked "Confidential" upon receipt. The above—captioned proceeding has been designated as "permit—but—disclose" with respect to MSV s request to launch and operate a next—generation mobile—satellite service system. See Report No. SPB—170 (June 26, 2001). An original and two (2) copies of this presentation are submitted herewith. Please direct any questions regarding this matter to the undersigned. Very truly yours, PseDavid S. Konczal ce: Ira Keltz Julius Knapp Geraldine Matise Gary Thayer

ShawPittman ur ORIGINAL OR GINAL A Limited Liability Partnership Including Professional Corporations _ I EX FARTE OR LATE FILED February 6, 2002 40p 9403 se msCc K""a{‘"'n,-‘, 4 k/ & r&tfi 7 Foen x ""= tp pl¢ U {en Via Hand Delivery w¥ XEff Mr. William F. Caton FEGg . Acting Secretary f 6 2002 Federal Communications Commussion Bs COMMEUNMCeTG COMMISEH) 445 12th Street, S.W. 2620E 08 mee secagrany _ Washington, D.C. 20554 A .. .TAag & \ y ":) nd : Re: Mobile Satellite Ventures Subsidiary LLC 5o * A Ex Parte Presentation File No. SAT—ASG—20010302—00017; File No. SAT—WAV—20010302—00018; File No. SAT—AMD—20010302—00019; Fi Dear Mr. Caton: On February 5, 2002, Carson Agnew, Managing Director; Peter Karabinis, Chief Technical Officer; Lon Levin, Vice President and Regulatory Counsel; Gary Churan, Director, Mobile Terminal Engineering; Dick Evans, Senior Scientist; and Serge Nguyen, Director, Engineering; all of Mobile Satellite Ventures Subsidiary LLC ("MSV"), along with Tom Sullivan of Sullivan Telecommunications Associates, and Bruce Jacobs and David Konczal of Shaw Pittman LLP, counsel to MSV, met with Ira Keltz, Julius Knapp, Geraldine Matise, and Gary Thayer of the Office of Engineering and Technology. MSV presented the information contained in the attached set of presentation materials. MSV has submitted page 10 of these presentation materials under separate cover with a request for confidential treatment. This page contains information relating to the ongoing international L—band frequency coordination process which is confidential among the parties to that coordination. The above—captioned proceeding has been designated as "permit—but—disclose" with respect to MSV‘s request to launch and operate a next—generation mobile—satellite service system. See Report No. SPB—170 (June 26, 2001). Washington, DC Northern Virginia New York Los Angeles 2300 N Street, NW Washington, DC 20037—1128 202.663.8000 Fax: 202.663.8007 www.shawpittman.com London

ORIGINAL ShawPittm ur an Mr. William F. Caton February 6, 2002 Page 2 An original and two (2) copies of this presentation are submitted herewith. Please direct any questions regarding this matter to the undersigned. Very truly yours, 34—_/ . David S. Konczal ce: Ira Keltz Julius Knapp Geraldine Matise Gary Thayer

MSV‘s Next Generation Satellite System Coordination and Interference Considerations Presented to the IWNI¥IgO Federal Communications Commission Office of Engineering and Technology February 5, 2002 cA ullh ll A1| V l” Mobile Satellite Ventures LPp

a Potential interference to satellite uplinks (from MSV mobile terminals) — intra—system (from MSV MTs operating in ATC mode) — inter—system (from MSV MTs operating in either satellite or ATC modes) > adjacent channel operations > co—channel operations & Potential interference to users of other systems (Inmarsat, aero telemetry) in the downlink direction (from MSV‘s ATC base stations) — densensitization/overload — out—of—band emissions (D S < ul < 4 9. & d J :-’. 7 d m 4 °O m © ® 3 & ue @ 0

— Coordination of the MSS L—band will continue to be driven by satellite operations — MSV‘s next generation system will improve prospects for coordination — ATC base stations will not cause harmful interference to other systems & < < \| &* n;u“ w a uy to :.'_“- < on C 3d mb C °C && ®«n o ® o

Under the most recent Operators Agreement, less than ten percent of the MSS L—band spectrum is shared co—channel Co—channel sharing between MSV‘s next generation satellite system and Inmarsat‘s satellites is likely to continue to be largely impractical —— regardless of MSV‘s deployment of ATC — The 20 dB satellite antenna discrimination value stated by Inmarsat (for the Inmarsat 4 satellites) makes sharing unlikely — Co—channel sharing between satellite operations is more likely only if Inmarsat is willing to improve its antenna discrimination to about 25 dB or better ATC operations will not require MSV to coordinate access to more spectrum — MSV‘s satellite system is designed with 10 dB link margin — Only 0.25 dB of link margin will be expended by MSV‘s satellite to accommodate the effect of the ATC operations & < 3 < In "“nl t t II < 3 3. & Lo 8 ’__-;: 7e d m °o & & © @ 3 & ue © 0

s Adjacent channel interference to Inmarsat satellites will be reduced by more than two orders of magnitude relative to the level produced by MSV‘s current satellite system a Co—channel interference will be reduced by more than one order of magnitude a Fully—loaded, mature ATC operations will not impact the ability of MSV and Inmarsat systems to coordinate co—channel operations — less than 1/30th of the effect of the satellite operations — no more than one percent contribution to AT/T MSV s al mnl uy Mobile Satellite Ventures Lr

ATC base stations will not interfere with land mobile satellite terminals — More than 20dB of desen3|t|zat!on/overload margin is provided throughout the entire service area of a base station — Adjacent channel interference due to out—of—band emissions is kept at less than 1% A T/T throughout the entire service area of a base station ATC base stations will not interfere with aeronautical mobile satellite terminals — Worst—case analysis assumes the aircraft is directly over an urban area covered by 1000 base stations within line of sight — More than 10 dB of desensitization/overload margin is provided even at the minimum allowed aircraft altitude of 304 meters — With respect to adjacent channel interference due to out—of—band emissions, the aggregate A T/T is kept below 5% at an altitude of 304 meters ATC base stations can be coordinated with aeronautical telemetry — The interference zone in which the allowed interference level of —181dBW/m2/4KHz might be exceeded (assuming worst—case, line—of—sight conditions) is 0.9 km MSV s ml I in "“m un t C < 3 I ul at mb o C °C & = ® 4 m ® ® 3 0

Current System and Proposed (Next Generation) System ‘ C al :C 5 U 1 B <C. o w 2 mb

Geostationary Satellites 101°W 106.5°W Ku—Band Communications L— Band Ground Segment (1.5/1.6 GHz) . Mobile Terminals (1.5/1.6 GHz) I & _ 3 in «d D. llll;nsllll a= o m m K4 t o °& = 8 0 C t— 0 t

Continental U.S. Canada Gulf of Mexico Caribbean Alaska and Hawaii Up to 200 miles off—shore Central America Northernmost South America I;nm!!’ upuy Mobile Satellite Ventures Lp

REDACTED 10 l Mobile Satellite Ventures Lp

Public Service Customers Commercial Customers m American Red Cross m Amoco Corp. m USDA m AT&T Wireless a Department of Transportation m Boeing s Drug Enforcement Agency a CBS m FAA _ Colonial Pipeline m FEMA s El Paso Energy a Federal Highway Administration s Florida Power and Light m HHS s Northern Natural Gas a Hawaii DOD a Rio Grande Electric m NYC Fire Department s Southwest Power Pool Missouri Highway Patrol m Vistar U.S. Fish and Wildlife s Williams Companies M <C < m (¥) 11 < 4 J & d E. = m mb m o 3 © i 0 ® ® @ & =

Jeff personally delivered 50 portable MTs to the NYPD, NY/NJ Port Authority Police, NYC Fire Department and others. Jeff Corcoran, of MSV, stands with NYPD Detective Goldstein at Ground Zero. — MSV Mobile Satellite Ventures Lr is

10.75 — 10.95 / 11.20 — 11.45 GHz 12.75 — 13.25 GHz t 1626.5 — 1660.5 MHz ¢1525 — 1559 MHz MT MSV "‘.l([‘ I ullh 13 Ap Mobile Satellite Ventures LPp

14 Oi' dl%. 2s 1 ks v”¢'¢ Mo—Ct \OYI w‘&4 i._. (/(! Ai./‘ fl. \-f[ '", ’4I =6Ch"! atasn® m\"‘qBA BP L 1 » Theta in degrees ”‘QY.,49 m’ld EP N ‘s \""‘14 ‘:!gl tl‘\‘ t" i‘c — MSV Mobile Satellite Ventures Lp L sgaubap u1t Pj9u| l

1626.5 — 1660.5 MHz 4 J 1525 — 1559 MHz MSV l]"ll{l!‘{ iAindlu 15 Mobile Satellite Ventures Lp

% % Geostationary Satellites % 62° 139° 106.5° 10.75 — 10.95 / 11.20 — 11.45 GHz 12.75 — 13.25 GHz 1626.5 — 1660.5 MHz 4 $1525 — 1559 MHz x* |o %fi, BSC "a n m < 16 < 6 4@ S = 3 j=n mb me m "o © 3 3 & ® & 0 m ®

PARAMETER Satellite Longitudes 101 W and 106.5 W 101 W and 106.5WV Satellite Transmit Band 1530 ~—1559 MHz 1525 —1559 MHz Mobile Terminal Transit 1631.5 — 1660.5 MHz 1626.5 — 1660.5 MHz Band | Polarization RHCP RHCP Peak Antenna Gain 29 dBi 42.5 dBi System Temperature 600 K 450 K Peak G/T 3.7 dB/K 16 dB/K Total EIRP @ Peak 56.6 dBw 80 dBwW Max/beam Carrier Bandwidth 6 kHz 200 kHz Satellite Transmit 50 KHz Satellite Receive Satellite Terrestial Access Mode SsCPC TDMA TDMA Mobile Terminal Maximum 12.5 — 16.0 dBw 5 dBw 0 dBwW EIRP Polarization RHCP RHCP Linear Carrier Bandwidth—Transmit 6 KHz 50 KHz 200 KHz Carrier Bandwidth—Receive 6 KHz 200 KHz 200 KHz Channels per carrier 1 32/8 8/8 RxX/Tx Terrestial Access Mode TODMA BTS Maximum EIRP 19.1 dBwW Polarization LHCP Carrier Bandwidth—Transmit 200 kHz Carrier Bandwidth—Receive 200 kHz Channels per carrier 8 fl!”n‘u[} l ;lsjillf ¥. h #. = 2 m+ a m ® & &3 ® in

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3 u 0 o * mnflh!l M mb E ®< < ad mb & 109 =a D t wl "C < Issues Coordination and Interference

Link Margin Degradation dB 0.25 MSV Satellite Antenna Gain (average per beam) dBi 41 MSV Satellite Receiver Noise Temperature K 450 MSV Satellite Receiver Noise Spectral Density dBw/Hz —202.1 Maximum MSV Anciltary Terminal EIRP dBw 0 MSV Terminal Carrier Bandwidth (ancillary mode}) kHz 200 MSV Terminal EIRP Spectral Density dBW/Hz —53.0 Free Space Loss dB 188.8 Average Shielding dB 10 MSV Satellite Receive Antenna Discrimination (Average) dB 10 Average Power Reduction due to Closed—Loop Power Control dB 6 Average Power Reduction due to Variable—Rate Vocoder dB 7.A Average Polarization Isolation (Linear to Circular) dB 3 Voice Activity Factor dB 1 Received Interfering Signal Spectral Density dBW/Hz —238.2 Max Number of Co—channel ATC Carriers per Co—channel Spot Beam Vicinity 244 Number of Users per Carrier 7 Maximum Number of ATC Users per Co—channel Spot Beam Vicinity 1,707 Number of Co—Channel Satellite Beam Vicinities over CONUS ~10 Total Number of Allowed Ancillary Co—Channel Carriers Over CONUS 2,438 MSV Eul Mobile Satellite Ventures Lr

P‘otent:al:Adjacent;chan‘nm“Interference fromV Inmarsat Satellite G/T dB/K Inmarsat Satellite Antenna Gain dBi Inmarsat Satellite Receiver Noise Temperature K Inmarsat Satellite Receiver Noise Spectral Density dBwW/Hz Maximum MSV Terminal EIRP dBw MSV Terminal Max. Out—of—Band Emissions Density dBW/Hz Free Space Loss dB Average Shielding dB 10 10 Average Power Reduction due to Closed—Loop Power Control dB 6 6 Average Power Reduction due to Variable—Rate Vocoder dB 74 7.4 Voice activity dB 1 1 Average Polarization Isolation (Linear to Circular) dB 3 3 Total Received Interfering Signal Spectral Density dBW/Hz —241.3 —269.8 —292.2 —2217.3 —2178.2 A T/T Increase Per MSV carrier % 0.0076 0.00001 0.0000001 0.2089 0.000002 Maximum Number of MSV Carriers 1,800 1,800 90,000 1,800 90,000 Total DT/T Increase Based on Total Number of Carriers 3.414 0.005 0.001 3.76 0.003 MSV Mobile Satellite Ventures Lp 22

~MSVNext Gen _ erminals (Satell ‘Operations) . Inmarsat 3 Satellite G/T dB/K —1.45 —1.45 Inmarsat 3 Satellite Antenna Gain dBi 27 27 Inmarsat 3 Satellite Receiver Noise Temperature K 700 700 Inmarsat 3 Satellite Receiver Noise Spectral Density dBW/Hz —200.1 —200.1 Maximum MSV Satellite Terminal EIRP dBw 16 5 MSV Terminal Carrier Bandwidth kHz 6 50 MSV Terminal EIRP Spectral Density dBW/Hz —21.8 ~42.0 Free Space Loss dB 188.8 188.8 Average Shielding dB 0 0 Inmarsat Satellite Receive Antenna Discrimination dB 22 22 Average Power Reduction due to Closed—Loop Power Control dB 0 2 Average Polarization Isolation (Linear to Circular) dB 0 0 Voice Activity Factor dB 0 3 Received Interfering Signal Spectral Density dBW/Hz —205.6 —230.8 A TT Increase Per MSV carrier % 28.6 0.086 System Maximum Frequency Reuse Factor 2 28 Total A T/T Increase at Maximum Reuse % 57.24 2.42 MSV ml | tI In qwu 1 Mobile Satellite Ventures Lp

nerationTerminals _(SatelliteOperations)_ Inmarsat 4 Satellite G/T 13 Inmarsat 4 Satellite Antenna Gain dBi 41 41 41 41 41 Inmarsat 4 Satellite Receiver Noise Temperature K 650.0 650.0 650.0 650 650 650 Inmarsat 4 Satellite Receiver Noise Spectral Density dBW/Hz —200.5 —200.5 —200.5 —200.5 —200.5 —200.5 Maximum MSV Satellite Terminal EIRP dBw 16 16 16 5 5 5 MSV Terminal Carrier Bandwidth kHz 6 6 6 50 50 50 MSV Terminal EIRP Spectral Density dBw/Hz —21.8 —21.8 —21.8 —42.0 —42.0 ~42.0 Free Space Loss dB 188.8 188.8 188.8 188.8 188.8 188.8 Average Shielding —dB 0 0 0 0 0 0 Inmarsat Satellite Receive Antenna Discrimination dB 20 25 30 20 25 30 Average Power Reduction due to Closed—Loop Power Control dB 0 0 0 2 2 2 Average Polarization Isolation (Linear to Circular) dB 0 0 0 0 0 0 Voice Activity Factor dB 0 0 0 3 3 3 Received Interfering Signal Spectral Density dBW/Hz —189.6 —194.6 —199.6 —214.8 —219.8 —224.8 A TT Increase per MSV carrier % 1227 388 123 3.7 1.2 0.4 System Maximum Frequency Reuse Factor 2 2 2 28 28 28 Total A T/T Increase at Maximum Reuse % 2454 776 245 103.6 32.7 10.4 MSV Mobile Satellite Ventures LP 2s

Inmaréat Satellite G/T Inmarsat Satellite Antenna Gain dBi Inmarsat Satellite Receiver Noise Temperature K 700 650.0 650.0 650.0 Inmarsat Satellite Receiver Noise Spectral Density dBW/Hz —200.1 —200.5 —200.5 —200.5 Maximum MSV Terminal EIRP dBw 0.0 0.0 0.0 0.0 MSV Terminal Carrier Bandwidth kHz 200 200 200 200 MSV Terminal EIRP Spectral Density dBW/Hz —53.0 —53.0 —53.0 —53.0 Free Space Loss dB 188.8 188.8 188.8 188.8 Average Shielding dB 10 10 10 10 Inmarsat Satellite Receive Antenna Discrimination dB 22 20 25 30 Average Power Reduction due to Closed—Loop Power Control dB 6 6 6 6 Average Power Reduction due to Variable—Rate Vocoder dB 7.A 7.4 7.4 7.4 Average Polarization Isolation (Linear to Circular) dB 3 3 3 3 Voice Activity Factor dB 1 1 1 1 Received Interfering Signal Spectral Density dBwW/Hz —264.2 —248.2 —253.2 —258.2 A T/T Increase per MSV carrier % 0.00004 0.0017 0.0005 0.0002 Maximum CONUS—wide Frequency Reuse 2,000 2,000 2,000 2,000 Total A T/T Increase based on maximum reuse across % 0.08 3.37 1.06 0.34 CONUS MSV i1 q“m 25 th t 1 ul af < 3 9. & & 7 me °O & =a @© t & ® ® 3 Ed 0

MSV Base Station Power to Antenna per 200 kHz Carrier dBw 3.1 3.1 MSV Base Station Antenna Gain — Peak dBi 16.0 16.0 Out—of—band Attenuation dB 46.1 —— MSV Base Station OBE to Antenna dBW/MHz —— —57.9 MSV Base Station EIRP per 200 kHz Carrier (in MSV Channel) dBw 19.1 19.1 MSV Base Station Antenna Discrimination Toward MES dB —— —12.5 MSV Base Station EIRP per 200 kHz Carrier (in Inmarsat Channel) dBw —27.0 —61.4 Distance of Inmarsat Terminal from MSV Base Station Transmitter m 100 100 Free Space Loss (Line—of—Sight) : dB 76.0 Walfisch—lkegami non—line—of—sight: 95.5 Shielding dB 0 0 Power Control Reduction dB 6 6 Voice Activity Reduction dB 4 4 Polarization Isolation (LHCP to RHCP) dB 3.0 8.0 Gain of Inmarsat MES towards MSV Base Station dBi 0.0 0.0 Sum of Attenuation Factors and MES Antenna Gain dB 89.0 113.5 Received Interfering Signal Power in 200 kHz dBw —116.0 —174.9 Received Interfering Signal Power Spectral Density dBW/Hz —169.0 —227.9 Inmarsat MES Receiver Noise Temperature K 150 290 Inmarsat MES Receiver Noise Spectral Density dBwW/Hz —206.8 —204.0 A T/ZT increase per MSV 200 kHz Carrier % 611,842.9 0.41 MSV + DT/T increase per MSV carrier = 0.41% at 100m separation from base station tower. \ milltt "“m A + DT/T increase per MSV carrier is <0.8% for any separation. t Mobile Satellite Ventures Lp

MSV Base Station EIRP per 200 kHz carrier Total Bandwidth of Base Station Transmissions Per Sector Max. Number of Base Station Carriers Per Sector Distance of Inmarsat Terminal from Base Station Propagation Path Losst Average Power Reduction due to Closed—Loop Power Control Voice Activity Reduction Polarization Isolation Gain of Inmarsat Terminal toward Base Station Base station antenna discrimination toward Inmarsat MT Received Interfering Signal Power Threshold for Overioad of Inmarsat Mini—M* Desensitization Margin +26.9 dB overload margin at 100m separation from tower t Inmarsat assumes line—of—sight propagation; MSV assumes Walfisch—lkegami non—line—of—sight propagation as more realistic at a distance of 100 meters from the base station. * The MSV Value is based on measurements performed by MSV and is consistent with the AIRNC specification. MSV Mobile Satellite Ventures Lr s

BTS Spurious EIRP Density/Carrier dBW/Hz ~101.9 Carriers per Sector «—— 3 Voice Activity Reduction dB 4 Average Power Reduction due to Closed—Loop Power Control dB 6 Polarization Discrimination dB _ 8 Total Effective Spurious EIRP Density per BTS dBW/Hz ~115.1 Calculated Receiver Spurious Power Density at Aircraft Receiver (1000 BTS) dBW/Hz ~216.7 Aircraft Receiver Noise Temperature dBK 25.0 Aircraft Receiver Thermal Noise Density dBW/Hz ~203.6 Allowable A T/T —— 6% Max Allowable Spurious Power Density at Aircraft Receiver dBw/Hz ~215.8 Aggregate Receiver A T/T (from 1000 BTS) 4.9% BTS EIRP per Carrier dBw 19.1 Carriers per BTS Sector —— 3 Voice Activity Reduction dB 4 Average Power Reduction due to Closed—Loop Power Control dB 6 Polarization Discrimination dB 8 BTS EIRP Total per Sector dBw 10.9 Calculated Power at Aircraft Receiver dBm —60.7 Max Allowable Power at Aircraft Receiver (per ARINC specification) dBm —50.0 Margin to Overload Threshold dB 10.7 MSV * Aggregate DT/T at 304m altitude is less than 5% from 1000 base stations I ![“"I + Greater than 10dB margin against overload at 304m aititude from 1000 visible base stations. 28 Mobile Satellite Ventures Lp

Frequency GHz Max Allowed Level @ <4 degrees (per Recommendation ITU—R M.1459) dBW/m2/4 kHz Area of Isotropic Ant. dB—m*2 Max Allowed Level into Isotropic Antenna dBW/4 kHz Ancillary Base Station Frequency GHz Base Station EIRP dBw Voice Activity Factor dB Power Control dB Carriers per Base Station Sector Effective EIRP dBw Out of band Attenuation dBce/MHz — Effective Out—of—Band Emissions dBW/4 kHz Base Station Filter Attenuation dB@1525 MHz Base Station Radiated Spurious Power Density dBW/4 kHz Path Loss Required to Satisfy Allowed Level dB Walfisch—lkegami Non—Line of Sight Distance Required to Yield above Path Loss km Line—of—Sight Distance Required to Yield above Path Loss km «Minimum separation distance of 0.9 km (0.1 km for non line—of—sight) to meet allowable ITU interference level. *The distance is less than the BTS service area MSV qllm 1 Mobile Satellite Ventures LP


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Document Modified: 2011-02-10 18:11:39
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