Attachment 2002Mobile-req confi

2002Mobile-req confi

Ex PARTE PRESENTATION NOTIFICATION LETTER submitted by Mobile Satellite

gr

2002-02-06

This document pretains to SAT-WAV-20010302-00018 for Waiver on a Satellite Space Stations filing.

IBFS_SATWAV2001030200018_869605

                                                                      ‘             EX PARTE OR Lare                      p
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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


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 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
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 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
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     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
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                           — 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
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                        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
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     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




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                     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


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                                              Geostationary Satellites
                                                                         101°W
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                                                                         Ku—Band




                                                                                   Communications
                              L— Band                                              Ground Segment
                            (1.5/1.6 GHz) .




                       Mobile Terminals
                         (1.5/1.6 GHz)




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                                Continental U.S.
                                Canada
                                Gulf of Mexico
                                Caribbean
                                Alaska and Hawaii
                                Up to 200 miles off—shore
                                Central America
                                Northernmost South America
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                 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
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                                                                                   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
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                                          10.75 — 10.95 / 11.20 — 11.45 GHz
                                             12.75 — 13.25 GHz




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                %                   %             Geostationary Satellites         %
                                                                             62°
                139°                   106.5°                                10.75 — 10.95 / 11.20 — 11.45 GHz
                                                                              12.75 — 13.25 GHz



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                            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
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                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




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Mobile Satellite Ventures Lr


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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




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                                                                                                               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




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                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
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        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
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                                   + 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



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

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