Attachment EngineeringStatement

This document pretains to SAT-MOD-20160803-00077 for Modification on a Satellite Space Stations filing.

IBFS_SATMOD2016080300077_1145396

Engineering Statement
1   Introduction
Intelsat License LLC (“Intelsat”) seeks authority in this application to operate the satellite
designated as Galaxy 11 from 44.9° E.L.

The characteristics of the Galaxy 11 spacecraft, as well as its compliance with the various
provisions of Part 25 of the Federal Communications Commission’s (“FCC or “Commission”)
rules, are provided in the remainder of this Engineering Statement, which updates the beam gain
contours. In all other respects, the characteristics of Galaxy 11 are the same as those described in
SAT-MOD-20121018-00184.

2   Spacecraft Overview
Galaxy 11 is a Boeing 702 spacecraft that is capable of operating in C-band and Ku-band
frequencies listed below.

                                 Direction              Frequency
                                                     5925 – 6425 MHz
                                   Uplink
                                                    13750 – 14500 MHz
                                                     3700 – 4200 MHz
                                 Downlink           10950 – 11200 MHz
                                                    11700 – 12200 MHz


The spacecraft provides the following coverage:

                            Beam             Coverage
                            Northern         Northern Africa and Europe
                            South Africa Southern Africa


2.1 Spacecraft Characteristics
Galaxy 11 is a Boeing 702 three-axis stabilized type spacecraft that has a rectangular outer body
structure. Galaxy 11 utilizes two deployable solar array wings and a number of deployable and
non-deployable antennas.

The Galaxy 11 spacecraft is composed of the following subsystems:

         Thermal
         Power

                                             Page 1 of 23


         Attitude Control
         Propulsion
         Telemetry, Command and Ranging
         Uplink Power Control
         Communications

These subsystems maintain the correct position and attitude of the spacecraft; ensure that all
internal units are maintained within the required temperature range; and ensure that the
spacecraft can be commanded and controlled with a high level of reliability from launch to the
end of its useful life. The spacecraft design incorporates redundancy in all of the various
subsystems in order to avoid single-point failures.

The structural design of Galaxy 11 provides mechanical support for all subsystems. The
structure supports the communication antennas, solar arrays, and thrusters. It also provides a
stable platform for preserving the alignment of critical elements of the spacecraft.

2.2 Communication Subsystem
Galaxy 11 provides active communication channels at C-band and Ku-band frequencies, each
having a bandwidth of 36 MHz. The Galaxy 11 frequencies, polarization, and channel plan are
provided in Schedule S.

The coverage contours and performance characteristics of Galaxy 11 beams are provided in
Schedule S. Exhibits 1 and 2 provide the beam parameters for the Galaxy 11 uplink and
downlink beams, respectively.

2.3 Telemetry, Command and Ranging Subsystem
The telemetry, command and ranging (“TC&R”) subsystem provides the following functions:

   1) Acquisition, processing and transmission of spacecraft telemetry data;

   2) Reception and retransmission of ground station generated ranging signals; and

   3) Reception, processing and distribution of telecommands.

The Galaxy 11 command and telemetry channel frequencies are shown in Exhibit 3. The
coverage patterns of the on-station command and telemetry beams are provided in Schedule S.
The coverage patterns of the emergency command and telemetry beams have gain contours that
vary by less than 8 dB across the surface of the Earth and accordingly the gain at 8 dB below the
peak falls beyond the edge of the Earth. Therefore, pursuant to Section 25.114(c)(4)(vi)(A) of
the FCC’s rules, contours for these beams are not required to be provided and the associated
GXT files have not been included in Schedule S. The Galaxy 11 command and telemetry
subsystem performance is summarized in Exhibit 3.


                                          Page 2 of 23


2.4 Uplink Power Control Subsystem
Galaxy 11 utilizes three Ku-band channels for uplink power control (“ULPC”), antenna tracking,
and ranging. The coverage patterns of the UPCC beam is provided in Schedule S. The coverage
patterns of the UPGH and UPGV beams have gain contours that vary by less than 8 dB across
the surface of the Earth and accordingly the gain at 8 dB below the peak falls beyond the edge of
the Earth. Therefore, pursuant to Section 25.114(c)(4)(vi)(A) of the FCC’s rules, contours for
these beams are not required to be provided and the associated GXT files have not been included
in Schedule S. The Galaxy 11 ULPC frequencies and subsystem performance are summarized in
Exhibit 3.

2.5 Satellite Station-Keeping
The spacecraft will be maintained within 0.05° of its nominal longitudinal position in the east-
west direction. Accordingly, it will be in compliance with Section 25.210(j) of the
Commission’s rules.

The attitude of the spacecraft will be maintained with accuracy consistent with the achievement
of the specified communications performance, after taking into account all error sources (i.e.,
attitude perturbations, thermal distortions, misalignments, orbital tolerances and thruster
perturbations, etc.).

3   Services
Galaxy 11 is a general purpose communications satellite and has been designed to support
various services offered within the Intelsat satellite system. Depending upon the needs of the
users, the transponders on Galaxy 11 can accommodate television, radio, voice, and data
communications. Typical communication services include:

    a) Compressed digital video

    b) High speed digital data

    c) Digital single channel per carrier (“SCPC”) data channels

Emission designators and allocated bandwidths for representative communication carriers are
provided in Schedule S.

4   Power Flux Density
The power flux density (“PFD”) limits for space stations operating in the 3700 – 4200 MHz and
10950 – 11200 MHz bands are contained in Section 25.208 of the Commission’s rules. Neither
the Commission’s rules nor the ITU Radio Regulations specify any PFD limits for the 11700 –
12200 MHz band applicable to geostationary satellites operating in the fixed satellite service.



                                           Page 3 of 23


The maximum PFD levels for the Galaxy 11 transmissions were calculated for the 3700 – 4200
MHz, 10950 – 11200 MHz, and 11700 – 12200 MHz bands. The results are provided in
Schedule S and show that the downlink power flux density levels of the Galaxy 11 carriers do
not exceed the limits specified in Section 25.208 of the Commission’s rules.

5   Emission Compliance
Section 25.202(e) of the Commission’s rules requires that the carrier frequency of each space
station transmitter be maintained within 0.002% of the reference frequency. Galaxy 11 is
designed to be compliant with the provisions of this rule.

Intelsat will comply with the provisions of Section 25.202(f) of the Commission’s rules with
regard to Galaxy 11 emissions.

6   Orbital Location
Intelsat requests that it be assigned the 44.9° E.L. orbital location for Galaxy 11. The 44.9° E.L.
location satisfies Galaxy 11 requirements for optimizing coverage, elevation angles, and service
availability. Additionally, the location also ensures that the maximum operational, economic,
and public interest benefits will be derived.

7   Coordination with Co-frequency Space Stations
The impact of the Galaxy 11 emissions on hypothetical adjacent satellites located at 42.9°E.L.
and 46.9º E.L. was analyzed.1 The interference analysis was conducted for a number of
representative carriers at C-band and Ku-band frequencies. It was assumed that there were
hypothetical satellites having the same operating characteristics as Galaxy 11 at the 42.9° E.L.
and 46.9º E.L. orbital locations.

For the satellite located at 46.9º E.L., it was assumed that the adjacent satellites were Galaxy 11,
located at 44.9° E.L., and a hypothetical satellite having the same operating characteristics as
Galaxy 11 located at 48.9º E.L.2 For the satellite located at 42.9° E.L., it was assumed that the
adjacent satellites were Galaxy 11, located at 44.9° E.L., and a hypothetical satellite having the




1
 At the time of submission of this application, there are no satellites located at 42.9 E.L. or
46.9 E.L. The use of satellites at other locations the interference analysis would be inconsistent
with a two-degree orbital separation environment and policy.
2
 At the time of submission of this application, there are no satellites located at 48.9 E.L. The
use of satellites at other locations the interference analysis would be inconsistent with a two-
degree orbital separation environment and policy.

                                            Page 4 of 23


same operating characteristics as Galaxy 11 located at 40.9° E.L.3 Since the interference
situation for the hypothetical satellite located at 42.9° E.L. is identical to the interference
situation of the hypothetical satellite at 46.9° E.L., link budgets are included herein for only the
42.9° E.L. satellite.

Other assumptions made for the interference analysis were as follows:

    a) In the plane of the geostationary satellite orbit, all transmitting and receiving earth station
       antennas have off-axis co-polar gains that are compliant with the limits specified in
       section 25.209(a) of the FCC’s rules.
    b) All transmitting and receiving earth stations have a cross-polarization isolation value of at
       least 30 dB within their main beam lobe.
    c) At C-band frequencies, degradation due to rain is not considered, given that rain
       (attenuation) effects are insignificant at C-band.
    d) At Ku-band frequencies rain attenuation predictions are derived using Recommendation
       ITU-R P.618.
    e) At Ku-band frequencies, increase in noise temperature of the receiving earth station due
       to rain is taken into account.
    f) For the cases where the transponder operates in a multi-carrier mode, the effects due to
       intermodulation interference are taken into account.

All assumptions and the results of the analysis are documented in Exhibit 5. The Galaxy 11
transmissions will comply with the levels contained in Sections 25.212(c) and (d) and Section
25.138 of the Commission’s rules, as applicable, unless higher levels are coordinated with
affected adjacent satellite operators within ±6.


8   Orbital Debris Mitigation Plan
Intelsat is proactive in ensuring safe operation and disposal of this and all spacecraft under its
control. The four elements of debris mitigation are addressed below.

8.1 Spacecraft Hardware Design
The spacecraft is designed such that no debris will be released during normal operations. Intelsat
has assessed the probability of collision with meteoroids and other small debris (<1 cm diameter)
and has taken the following steps to limit the effects of such collisions: (1) critical spacecraft
components are located inside the protective body of the spacecraft and properly shielded; and
(2) all spacecraft subsystems have redundant components to ensure no single-point failures. The


3
 At the time of submission of this application, there are no satellites located at 40.9 E.L. The
use of satellites at other locations the interference analysis would be inconsistent with a two-
degree orbital separation environment and policy.

                                            Page 5 of 23


spacecraft does not use any subsystems for end-of-life disposal that are not used for normal
operations.

8.2 Minimizing Accidental Explosions
Intelsat has assessed the probability of accidental explosions during and after completion of
mission operations. The spacecraft is designed in a manner to minimize the potential for such
explosions. Propellant tanks and thrusters are isolated using redundant valves and electrical
power systems are shielded in accordance with standard industry practices. At the completion of
the mission and upon disposal of the spacecraft, Intelsat will ensure that all active units are
turned off. However, due to the design of Galaxy 11, Intelsat will not be able to vent all
pressurized systems. Intelsat previously received waiver of Section 25.283(c) of the
Commission’s rules, 47 C.F.R. § 25.283.4

8.3 Safe Flight Profiles
Intelsat has assessed and limited the probability of the space station becoming a source of debris
as a result of collisions with large debris or other operational space stations. Subject to receipt of
FCC approval, Galaxy 11 will first be drifted to 45.0 E.L. and will temporarily be operated co-
located with Intelsat 12 until completion of traffic transition.5 After traffic transition and subject
to receipt of FCC approval, Galaxy 11 will be relocated to 44.9E.L. Once relocated to 44.9°
E.L., Galaxy 11 will not be located at an orbital location that has an overlapping station-keeping
volume with another satellite.

During the relocation of Galaxy 11, Intelsat will take all the necessary steps to coordinate the
move internally to minimize the risk of collision or interference between Galaxy 11 and Intelsat
12. Intelsat is not aware of any other FCC licensed system, or any other system applied for and
under consideration by the FCC, that will have an overlapping station-keeping volume with
Galaxy 11. Intelsat is also not aware of any system with an overlapping station-keeping volume
with Galaxy 11 that is the subject of an ITU filing and that is either in orbit or progressing
towards launch.

8.4 Post Mission Disposal




4
 See Application to Modify Authorization for Galaxy 11 (S2253), File No. SAT-MOD-
20101102-00229 (Stamp Grant Mar. 8, 2011, as corrected Apr. 7, 2011).
5
 Intelsat has sought Special Temporary Authority for the temporary stop at 45.0° E.L. See
Policy Branch Information; Satellite Space Applications Accepted for Filing, Report No. SAT-
01172, File No. SAT-STA-20160623-00059 (Jul. 8, 2016).


                                            Page 6 of 23


At the end of the mission, Intelsat intends to dispose of the spacecraft by moving it to an altitude
of at least 175 kilometers above the geostationary arc as previously stated.6 Intelsat has reserved
30.035 kilograms of fuel for this purpose. In its Second Report and Order in IB Docket 02-54,
Mitigation of Orbital Debris,7 the FCC declared that satellites launched prior to March 18, 2002,
such as the Galaxy 11 satellite, would be designated as grandfathered satellites not subject to a
specific disposal altitude. Therefore, the planned disposal orbit for Galaxy 11, as revised,
complies with the FCC’s rules.

The reserved fuel figure was determined by the spacecraft manufacturer and provided for in the
propellant budget. This figure was calculated taking into account the expected mass of the
satellite at the end of life and the required delta-velocity to achieve the desired orbit. The fuel
gauging uncertainty has been taken into account in these calculations.



9     TC&R Control Earth Stations
Intelsat will conduct TC&R operations through one or more of the following earth stations:
Fuchsstadt, Germany; Hartebeeshoek, South Africa; Mingenew, Australia; Kumsan, South
Korea; or Fucino, Italy. Additionally, Intelsat is capable of remotely controlling Galaxy 11 from
its facilities in McLean, VA or in Long Beach, CA.




6
 See Request for Special Temporary Authority to Drift Galaxy 11 to, and Operate at, 60.1° E.L.
and Notification of Revised Post-mission Disposal Statement; Call Sign: S2253, File No. SAT-
STA-20150505-00033 (filed May 5, 2015).
7
    Mitigation of Orbital Debris, Second Report and Order, 19 FCC Rcd 11567 (2004).

                                            Page 7 of 23


Certification Statement

I hereby certify that I am a technically qualified person and am familiar with Part 25 of the
Commission’s rules. The contents of this engineering statement were prepared by me or under
my direct supervision and to the best of my knowledge are complete and accurate.



             /s/ Alan Yates                                August 3, 2016

             Alan Yates                                          Date
               Intelsat
      Senior Manager, Spectrum
             Engineering




                                         Page 8 of 23


                                      EXHIBIT 1

COMMUNICATION SUBSYSTEM UPLINK BEAM PARAMETERS
                                                          Ku-Band         Ku-Band
 Beam Name               C-Band            C-Band
                                                           Europe          Europe
 Schedule S Beam ID      CHUL              CVUL            KHUL            KVUL
 Frequency Band
                      5925 – 6425        5925 – 6425    14000 - 14500   14000 - 14500
 (MHz)
 Polarization          Horizontal          Vertical       Horizontal       Vertical
 G/T (dB/K)                2.5               4.2             6.3             4.8
 Minimum SFD--
                          -94.0             -95.2           -99.8           -98.3
 (dBW/m2)
 Maximum SFD--
                          -80.0             -81.2           -83.8           -82.3
 (dBW/m2)



                      Ext. Ku-Band      Ext. Ku-Band    Ku-Band South   Ku-Band South
 Beam Name
                         Europe            Europe          Africa          Africa
 Schedule S Beam ID      EHUL              EVUL            BHUL            BVUL
 Frequency Band
                      13750 - 14000     13750 - 14000   14000 - 14500   14000 - 14500
 (MHz)
 Polarization          Horizontal          Vertical       Horizontal       Vertical
 G/T (dB/K)                5.2               5.2             5.7             6.3
 Minimum SFD--
                          -94.3             -94.2           -98.3           -99.9
 (dBW/m2)
 Maximum SFD--
                          -78.3             -78.2           -82.3           -83.9
 (dBW/m2)




                                      Page 9 of 23


                                        EXHIBIT 2

COMMUNICATION SUBSYSTEM DOWNLINK BEAM PARAMETERS
                                                             Ku-Band         Ku-Band
   Beam Name               C-Band             C-Band
                                                              Europe          Europe
   Schedule S Beam ID      CHDL               CVDL            KHDL            KVDL
   Frequency Band
                         3700 - 4200        3700 - 4200    11700 - 12200   11700 - 12200
   (MHz)
   Polarization          Horizontal          Vertical        Horizontal       Vertical
   EIRP (dBW)               40.2               40.1            49.7            49.7
   Maximum Beam
   Peak EIRP Density         1.4                1.3            10.9            10.9
   (dBW/4kHz)



                        Ext. Ku-Band       Ext. Ku-Band    Ku-Band South   Ku-Band South
   Beam Name
                           Europe             Europe          Africa          Africa
   Schedule S Beam ID      EHDL               EVDL            BHDL            BVDL
   Frequency Band
                        10950 - 11200      10950 - 11200   11700 - 12200   11700 - 12200
   (MHz)
   Polarization          Horizontal          Vertical        Horizontal       Vertical
   EIRP (dBW)               52.1               52.0            52.5            51.9
   Maximum Beam
   Peak EIRP Density        14.3               14.2            13.7            13.1
   (dBW/4kHz)




                                        Page 10 of 23


                                         EXHIBIT 3

               TC&R SUBSYSTEM CHARACTERISTICS


                                               Command        Command            Command
     Beam Name
                                                Europe         Bicone              Pipe
     Schedule S Beam ID                         CMDC           CMDB               CMDP
     Frequencies (MHz)                         14498.5         14498.5              14000.5
     Polarization                              Vertical       Horizontal            LHCP
     Peak Flux Density at Command
                                                -119.6           -91.8               -94.3
     Threshold (dBW/m2-Hz)



                                Telemetry         Telemetry   Telemetry     ULPC
Beam Name                                                                                      ULPC
                                 Europe            Bicone       Pipe        Europe
                                                                                              UPGH/
Schedule S Beam ID                  TLMC            TLMB       TLMP         UPCC
                                                                                              UPGV
                                11701.0 &         11701.0 &   11701.0 &
Frequencies (MHz)                                                           12195.0           10951.0
                                 11702.0           11702.0     11702.0
                                                                                             Horizontal
Polarization                        Vertical       Vertical    LHCP        Horizontal
                                                                                             & Vertical
Maximum Channel EIRP (dBW)           15.3            11.6       11.6         25.3              19.1
Maximum Beam Peak EIRP
Density (dBW/4kHz)
                                     -3.5            -7.2       -7.2         17.3               11.1




Note: RHCP: Right Hand Circular Polarization, LHCP: Left Hand Circular Polarization




                                         Page 11 of 23


                                                 EXHIBIT 4
                                   Beam Polarizations and GXT File Names
                                                        Schedule S Beam Names
                                     Linear Polarization                   Circular Polarization
           Beam
         Designation       Uplink     Uplink Downlink Downlink Uplink              Uplink Downlink Downlink
                          (H-Pol.)   (V-Pol.) (H-Pol.) (V-Pol.) (LHCP)            (RHCP) (LHCP) (RHCP)
                                                 C-Band Beams
       C-band Europe      CHUL        CVUL     CHDL     CVDL      ----              ----        ----       ----
       Ku-band Europe     KHUL        KVUL     KHDL     KVDL      ----              ----        ----       ----
        Ext. Ku-band
                           EHUL       EVUL       EHDL       EVDL         ----       ----        ----       ----
           Europe
            South         BHUL        BVUL       BHDL    BVDL            ----       ----        ----       ----
                                                   Ku-Band Beams
          Telemetry
                            ----       ----       ----      TLMC                                           ----
          Northern
       Telemetry Pipe       ----       ----       ----        ----       ----       ----     TLMP*

      Telemetry Bicone      ----       ----       ----     TLMB*         ----       ----        ----
          Command
                                       CMDC        ----       ----                   ----       ----       ----
           Northern
      Command Bicone CMDB                ----      ----       ----     CMDB*         ----       ----       ----
        Command Pipe                                                    CMDP*
        Ku-band ULPC
                             ----        ----     UPCC                    ----       ----       ----       ----
            Europe
         ULPC Global                             UPGH* UPGV*
* GXT files are not provided for the indicated beams because their -8 dB gain contours extend beyond the edge of
the Earth




                                                    Page 12 of 23


EXHIBIT 5: HYPOTHETICAL 42.9°E.L. SATELLITE
          INTERFERENCE ANALYSIS
UPLINK BEAM INFORMATION
Uplink Beam Name                                Europe                Europe                Europe
Uplink Frequency (MHz)                       5925 – 6425           5925 – 6425           5925 – 6425
Uplink Beam Polarization                   Horizontal/Vertical   Horizontal/Vertical   Horizontal/Vertical
Uplink Contour G/T (dB/K)                         -1.5                  -1.5                  -1.5
Uplink Contour SFD (dBW/m2)                      -90.0                 -90.0                 -90.0
DOWNLINK BEAM INFORMATION
Downlink Beam Name                               Europe                Europe                Europe
Downlink Frequency (MHz)                      3700 – 4200           3700 – 4200           3700 – 4200
Downlink Beam Polarization                 Vertical/Horizontal   Vertical/Horizontal   Vertical/Horizontal
Downlink Contour EIRP (dBW)                       36.1                  36.1                  36.1
ADJACENT SATELLITE 1
Satellite 1 Orbital Location                   40.9 E.L.             40.9 E.L.             40.9 E.L.
Uplink Power Density (dBW/Hz)                    -38.7                 -38.7                 -38.7
Downlink EIRP Density (dBW/Hz)                   -33.0                 -33.0                 -33.0
ADJACENT SATELLITE 2
Satellite 2 Orbital Location                   44.9 E.L.             44.9 E.L.             44.9 E.L.
Uplink Power Density (dBW/Hz)                    -38.7                 -38.7                 -38.7
Downlink EIRP Density (dBW/Hz)                   -38.7                 -38.7                 -38.7
CARRIER INFORMATION
Carrier ID                                    36M0G7W               10M3G7W                100KG7W
Information Rate (kbps)                         24575                  6000                    64
Carrier Modulation                              QPSK                  QPSK                   QPSK
Peak to Peak Bandwidth of EDS (MHz)               n/a                   n/a                    n/a
Code Rate                                      1/2 - RS              1/2 - RS                1/2-RS
Occupied Bandwidth (kHz)                        30133                 6771.1                  75.4
Allocated Bandwidth (kHz)                       36000                 10300                    100
Required Minimum C/N (dB)                         3.4                   3.9                    3.0
UPLINK EARTH STATION
Earth Station Diameter (meters)                   6.1                   6.1                   6.1
Earth Station Gain (dBi)                          49.4                  49.4                  49.4
Earth Station Elevation Angle                      20                    20                    20
DOWNLINK EARTH STATION
Earth Station Diameter (meters)                   3.0                   3.0                   3.0
Earth Station Gain (dBi)                          39.7                  39.7                  39.7
Earth Station G/T (dB/K)                          19.2                  19.2                  19.2
Earth Station Elevation Angle                      20                    20                    20
UPLINK PERFORMANCE
Uplink Earth Station EIRP (dBW)                    72.9                  64.6                  44.2
Uplink Path Loss, Clear Sky (dB)                 -200.2                -200.2                -200.2
Satellite G/T (dB/K)                               -1.5                  -1.5                  -1.5
Boltzman Constant (dBW/K-Hz)                      228.6                 228.6                 228.6
Carrier Noise Bandwidth (dB-Hz)                   -74.8                 -68.3                 -48.8
Uplink C/N (dB)                                    25.0                  23.2                  22.3
DOWNLINK PERFORMANCE
Downlink EIRP per Carrier (dBW)                    36.1                  28.1                   7.7
Antenna Pointing Error (dB)                        -0.5                  -0.5                  -0.5
Downlink Path Loss, Clear Sky (dB)               -196.3                -196.3                -196.3
Earth Station G/T (dB/K)                           19.2                  19.2                  19.2
Boltzman Constant (dBW/K-Hz)                      228.6                 228.6                 228.6
Carrier Noise Bandwidth (dB-Hz)                   -74.8                 -68.3                 -48.8
Downlink C/N (dB)                                  12.3                  10.8                   9.9
COMPOSITE LINK PERFORMANCE
C/N Uplink (dB)                                   25.0                  23.2                  22.3
C/N Downlink (dB)                                 12.3                  10.8                  9.9
C/I Intermodulation (dB)                           n/a                  19.5                  18.6
C/I Uplink Co-Channel (dB)*                       27.0                  27.9                  27.6
C/I Downlink Co-Channel (dB)*                     27.0                  27.9                  27.6
C/I Uplink Adjacent Satellite 1 (dB)              14.8                  13.0                  12.1
C/I Downlink Adjacent Satellite 1 (dB)            11.2                  9.7                   8.8
C/I Uplink Adjacent Satellite 2 (dB)              14.8                  13.0                  12.1
C/I Downlink Adjacent Satellite 2 (dB)            19.9                  18.4                  17.5

C/(N+I) Composite (dB)                             6.6                   4.9                   4.0
Required System Margin (dB)                       -1.0                  -1.0                  -1.0
Net C/(N+I) Composite (dB)                         5.6                   3.9                   3.0
Minimum Required C/N (dB)                         -3.4                  -3.9                  -3.0
Excess Link Margin (dB)                            2.2                   0.0                   0.0
CARRIER DENSITY LEVELS
Uplink Power Density (dBW/Hz)                    -51.3                 -53.1                 -54.0
Downlink EIRP Density At Beam Peak               -34.7                 -36.2                 -37.1




                                         Page 13 of 23


EXHIBIT 5: INTERFERENCE ANALYSIS (continued)

UPLINK BEAM INFORMATION
Uplink Beam Name                            Europe          Europe          Europe          Europe
Uplink Frequency (MHz)                   14000 – 14500   14000 – 14500   14000 – 14500   14000 – 14500
Uplink Beam Polarization                   Horizontal      Horizontal      Horizontal      Horizontal
Uplink Contour G/T (dB/K)                     0.3             0.3             0.3             0.3
Uplink Contour SFD (dBW/m2)                  -78.8           -90.8           -90.8           -90.8
Rain Rate (mm/hr)                            42.0             42.0           42.0            42.0
DOWNLINK BEAM INFORMATION
Downlink Beam Name                          Europe          Europe          Europe          Europe
Downlink Frequency (MHz)                 11700 – 12200   11700 – 12200   11700 – 12200   11700 – 12200
Downlink Beam Polarization                  Vertical        Vertical        Vertical        Vertical
Downlink Contour EIRP (dBW)                  45.7            45.7            45.7            45.7
Rain Rate (mm/hr)                            42.0            42.0            42.0            42.0
ADJACENT SATELLITE 1
Satellite 1 Orbital Location               40.9 E.L.       40.9 E.L.       40.9 E.L.       40.9 E.L.
Uplink Power Density (dBW/Hz)                -50.0           -50.0           -50.0           -50.0
Downlink EIRP Density (dBW/Hz)               -26.0           -26.0           -26.0           -26.0
ADJACENT SATELLITE 2
Satellite 2 Orbital Location               44.9 E.L.       44.9 E.L.       44.9 E.L.       44.9 E.L.
Uplink Power Density (dBW/Hz)                -50.0           -50.0           -50.0           -50.0
Downlink EIRP Density (dBW/Hz)               -26.0           -26.0           -26.0           -26.0
CARRIER INFORMATION
Carrier ID                                36M0G7W         10M3G7W         100KG7W         1M45G7W
Information Rate (kbps)                     24575            6000             64             512
Carrier Modulation                          QPSK            QPSK            QPSK            BPSK
Peak to Peak Bandwidth of EDS (MHz)           n/a             n/a             n/a            n/a
Code Rate                                  1/2 - RS        1/2 - RS         1/2-RS           1/2
Occupied Bandwidth (kHz)                    30133           6771.1           75.4           1229
Assumed Allocated Bandwidth (kHz)           36000           10300             100           1450
Required Minimum C/N (dB) – Clear Sky         3.4             3.9             3.0            3.4
Required Minimum C/N (dB) – Rain              3.4             3.5             2.8            2.7
UPLINK EARTH STATION
Earth Station Diameter (meters)              6.1              6.1            6.1             6.1
Earth Station Gain (dBi)                     56.9             56.9           56.9            56.9
Earth Station Elevation Angle                 20               20             20              20
DOWNLINK EARTH STATION
Earth Station Diameter (meters)               1.2             1.8             1.8             1.8
Earth Station Gain (dBi)                     41.3            44.8            44.8            44.8
Earth Station G/T (dB/K)                     18.8            22.3            22.3            22.3
Earth Station Elevation Angle                 20              20              20              20
LINK FADE TYPE                             Clear Sky       Clear Sky       Clear Sky       Clear Sky

UPLINK PERFORMANCE
Uplink Earth Station EIRP (dBW)              80.3             59.9           39.7            51.7
Uplink Path Loss, Clear Sky (dB)            -207.5          -207.5          -207.5          -207.5
Satellite G/T (dB/K)                          0.3             0.3             0.3             0.3
Boltzman Constant (dBW/K-Hz)                228.6            228.6          228.6           228.6
Carrier Noise Bandwidth (dB-Hz)              -74.8           -68.3           -48.8           -60.9
Uplink C/N (dB)                              26.9             13.0           12.4            12.3
DOWNLINK PERFORMANCE
Downlink EIRP per Carrier (dBW)              44.8             36.9           16.7            28.7
Antenna Pointing Error (dB)                   -0.5            -0.5            -0.5            -0.5
Downlink Path Loss, Clear Sky (dB)          -205.9          -205.9          -205.9          -205.9
Earth Station G/T (dB/K)                     18.8             22.3           22.3            22.3
Boltzman Constant (dBW/K-Hz)                228.6            228.6          228.6           228.6
Carrier Noise Bandwidth (dB-Hz)              -74.8           -68.3           -48.8           -60.9
Downlink C/N (dB)                            10.9             13.0           12.4            12.3
COMPOSITE LINK PERFORMANCE
C/N Uplink (dB)                              26.9             13.0           12.4            12.3
C/N Downlink (dB)                            10.9             13.0           12.4            12.3
C/I Intermodulation (dB)                      n/a             17.2           16.6            16.5
C/I Uplink Co-Channel (dB)*                  27.0             28.2           28.2            28.6
C/I Downlink Co-Channel (dB)*                27.0             28.2           28.2            28.6
C/I Uplink Adjacent Satellite 1 (dB)         31.5             17.6           17.0            16.8
C/I Downlink Adjacent Satellite 1 (dB)       13.8             16.8           16.1            16.0
C/I Uplink Adjacent Satellite 2 (dB)         31.5             17.6           17.0            16.8
C/I Downlink Adjacent Satellite 2 (dB)       17.2             18.9           18.2            18.1

C/(N+I) Composite (dB)                       8.3               7.2            6.6             6.5
Required System Margin (dB)                  -1.0             -1.0           -1.0            -1.0
Net C/(N+I) Composite (dB)                   7.3               6.2            5.6             5.5
Minimum Required C/N (dB)                    -3.4             -3.9           3.0             -3.4
Excess Link Margin (dB)                      3.9               2.3            2.6             2.1
Carrier Density Levels
Uplink Power Density (dBW/Hz)                -51.4           -65.3           -65.9           -66.1
Downlink EIRP Density At Beam Peak
(dBW/Hz)                                     -26.0           -27.4           -28.1           -28.2




                                              Page 14 of 23


            EXHIBIT 5: INTERFERENCE ANALYSIS (continued)
UPLINK BEAM INFORMATION
Uplink Beam Name                            Europe          Europe          Europe          Europe
Uplink Frequency (MHz)                   14000 – 14500   14000 – 14500   14000 – 14500   14000 – 14500
Uplink Beam Polarization                    Vertical        Vertical        Vertical        Vertical
Uplink Contour G/T (dB/K)                     -1.2            -1.2            -1.2            -1.2
Uplink Contour SFD (dBW/m2)                  -78.3           -90.3           -90.3           -90.3
Rain Rate (mm/hr)                            42.0             42.0           42.0            42.0
DOWNLINK BEAM INFORMATION
Downlink Beam Name                          Europe          Europe          Europe          Europe
Downlink Frequency (MHz)                 11700 – 12200   11700 – 12200   11700 – 12200   11700 – 12200
Downlink Beam Polarization                 Horizontal      Horizontal      Horizontal      Horizontal
Downlink Contour EIRP (dBW)                  45.7            45.7            45.7            45.7
Rain Rate (mm/hr)                            42.0            42.0            42.0            42.0
ADJACENT SATELLITE 1
Satellite 1 Orbital Location               40.9 E.L.       40.9 E.L.       40.9 E.L.       40.9 E.L.
Uplink Power Density (dBW/Hz)                -50.0           -50.0           -50.0           -50.0
Downlink EIRP Density (dBW/Hz)               -26.0           -26.0           -26.0           -26.0
ADJACENT SATELLITE 2
Satellite 2 Orbital Location               44.9 E.L.       44.9 E.L.       44.9 E.L.       44.9 E.L.
Uplink Power Density (dBW/Hz)                -50.0           -50.0           -50.0           -50.0
Downlink EIRP Density (dBW/Hz)               -26.0           -26.0           -26.0           -26.0
CARRIER INFORMATION
Carrier ID                                36M0G7W         10M3G7W         100KG7W         1M45G7W
Information Rate (kbps)                     24575            6000             64             512
Carrier Modulation                          QPSK            QPSK            QPSK            BPSK
Peak to Peak Bandwidth of EDS (MHz)           n/a             n/a             n/a            n/a
Code Rate                                  1/2 - RS        1/2 - RS         1/2-RS           1/2
Occupied Bandwidth (kHz)                    30133           6771.1           75.4           1229
Assumed Allocated Bandwidth (kHz)           36000           10300             100           1450
Required Minimum C/N (dB) – Clear Sky         3.4             3.9             3.0            3.4
Required Minimum C/N (dB) – Rain              3.4             3.5             2.8            2.7
UPLINK EARTH STATION
Earth Station Diameter (meters)              6.1              6.1            6.1             6.1
Earth Station Gain (dBi)                     56.9             56.9           56.9            56.9
Earth Station Elevation Angle                 20               20             20              20
DOWNLINK EARTH STATION
Earth Station Diameter (meters)               1.2             1.8             1.8             1.8
Earth Station Gain (dBi)                     41.3            44.8            44.8            44.8
Earth Station G/T (dB/K)                     18.8            22.3            22.3            22.3
Earth Station Elevation Angle                 20              20              20              20
LINK FADE TYPE                             Clear Sky       Clear Sky       Clear Sky       Clear Sky

UPLINK PERFORMANCE
Uplink Earth Station EIRP (dBW)              80.9             60.5           40.3            52.3
Uplink Path Loss, Clear Sky (dB)            -207.5          -207.5          -207.5          -207.5
Satellite G/T (dB/K)                          -1.2            -1.2            -1.2            -1.2
Boltzman Constant (dBW/K-Hz)                228.6            228.6          228.6           228.6
Carrier Noise Bandwidth (dB-Hz)              -74.8           -68.3           -48.8           -60.9
Uplink C/N (dB)                              26.0             12.1           11.4            11.3
DOWNLINK PERFORMANCE
Downlink EIRP per Carrier (dBW)              44.8             36.9           16.8            28.8
Antenna Pointing Error (dB)                   -0.5            -0.5            -0.5            -0.5
Downlink Path Loss, Clear Sky (dB)          -205.9          -205.9          -205.9          -205.9
Earth Station G/T (dB/K)                     18.8             22.3           22.3            22.3
Boltzman Constant (dBW/K-Hz)                228.6            228.6          228.6           228.6
Carrier Noise Bandwidth (dB-Hz)              -74.8           -68.3           -48.8           -60.9
Downlink C/N (dB)                            11.0             13.1           12.4            12.3
COMPOSITE LINK PERFORMANCE
C/N Uplink (dB)                              26.0             12.1           11.4            11.3
C/N Downlink (dB)                            11.0             13.1           12.4            12.3
C/I Intermodulation (dB)                      n/a             17.3           16.6            16.5
C/I Uplink Co-Channel (dB)*                  27.0             28.3           28.2            28.6
C/I Downlink Co-Channel (dB)*                27.0             28.3           28.2            28.6
C/I Uplink Adjacent Satellite 1 (dB)         32.1             18.1           17.5            17.4
C/I Downlink Adjacent Satellite 1 (dB)       13.9             16.8           16.2            16.1
C/I Uplink Adjacent Satellite 2 (dB)         32.1             18.1           17.5            17.4
C/I Downlink Adjacent Satellite 2 (dB)       17.3             18.9           18.3            18.2

C/(N+I) Composite (dB)                       8.3               7.0            6.4             6.3
Required System Margin (dB)                  -1.0             -1.0           -1.0            -1.0
Net C/(N+I) Composite (dB)                   7.3               6.0            5.4             5.3
Minimum Required C/N (dB)                    -3.4             -3.9           3.0             -3.4
Excess Link Margin (dB)                      3.9               2.1            2.4             1.9
Carrier Density Levels
Uplink Power Density (dBW/Hz)                -50.8           -64.8           -65.4           -65.5
Downlink EIRP Density At Beam Peak
(dBW/Hz)                                     -26.0           -27.4           -28.0           -28.1




                                              Page 15 of 23


     EXHIBIT 5: INTERFERENCE ANALYSIS (continued)
UPLINK BEAM INFORMATION
                                                     Extended Ku     Extended Ku     Extended Ku     Extended Ku
Uplink Beam Name
                                                       Europe          Europe          Europe          Europe
Uplink Frequency (MHz)                               13.75 – 14.00   13.75 – 14.00   13.75 – 14.00   13.75 – 14.00
Uplink Beam Polarization                              Horizontal      Horizontal      Horizontal      Horizontal
Uplink Contour G/T (dB/K)                                 -2.8            -2.8            -2.8            -2.8
Uplink SFD (dBW/m2)                                      -73.3           -85.3           -85.3           -85.3
Rain Rate (mm/hr)                                        42.0             42.0            42.0            42.0
DOWNLINK BEAM INFORMATION
                                                     Extended Ku     Extended Ku     Extended Ku     Extended Ku
Downlink Beam Name
                                                       Europe          Europe          Europe          Europe
Downlink Frequency (MHz)                             10.95–11.20     10.95–11.20     10.95–11.20     10.95–11.20
Downlink Beam Polarization                             Vertical        Vertical        Vertical        Vertical
Downlink Contour EIRP (dBW)                              46.0            46.0            46.0            46.0
Rain Rate (mm/hr)                                        42.0            42.0            42.0            42.0
ADJACENT SATELLITE 1
Satellite 1 Orbital Location                           40.9 E.L.       40.9 E.L.       40.9 E.L.       40.9 E.L.
Uplink Power Density (dBW/Hz)                            -50.0           -50.0           -50.0           -50.0
Downlink EIRP Density (dBW/Hz)                           -26.0           -26.0           -26.0           -26.0
ADJACENT SATELLITE 2
Satellite 1 Orbital Location                           44.9 E.L.       44.9 E.L.       44.9 E.L.       44.9 E.L.
Uplink Power Density (dBW/Hz)                            -50.0           -50.0           -50.0           -50.0
Downlink EIRP Density (dBW/Hz)                           -26.0           -26.0           -26.0           -26.0
CARRIER INFORMATION
Carrier ID                                           27M0G7W         10M3G7W          100KG7W         1M45G7W
Carrier Modulation                                      QPSK            QPSK            QPSK            BPSK
Peak to Peak Bandwidth of EDS (MHz)                      N/A             N/A             N/A             N/A
Information Rate(kbps)                                  18432            6000             64             512
Code Rate                                            1/2x188/204     1/2x188/204     1/2x239/256        R1/2
Occupied Bandwidth(kHz)                                 22600           6771.1           75.4          1229.0
Allocated Bandwidth(kHz)                                27000           10300            100           1450.0
Minimum C/N, Clear Sky (dB)                              3.4              3.9            3.0             3.4
Minimum C/N, Rain (dB)                                   3.4              3.6             2.8            2.7
UPLINK EARTH STATION
Earth Station Diameter (meters)                           6.1             6.1             6.1             6.1
Earth Station Gain (dBi)                                 56.7            56.7            56.7            56.7
Earth Station Elevation Angle                             20              20              20              20
DOWNLINK EARTH STATION
Earth Station Diameter (meters)                          1.8             1.8             1.8             1.8
Earth Station Gain (dBi)                                44.1            44.1            44.1            44.1
Earth Station G/T (dB/K)                                21.6            21.6            21.6            21.6
Earth Station Elevation Angle                            20              20              20              20
LINK FADE TYPE                                        Clear Sky       Clear Sky       Clear Sky       Clear Sky
UPLINK PERFORMANCE
Uplink Earth Station EIRP (dBW)                           79.6            64.4            44.2            56.2
Uplink Path Loss, Clear Sky (dB)                        -207.2          -207.2          -207.2          -207.2
Uplink Rain Attenuation                                   0.0             0.0             0.0             0.0
Satellite G/T(dB/K)                                       -2.8            -2.8            -2.8            -2.8
Boltzman Constant(dBW/K-Hz)                             228.6            228.6           228.6           228.6
Carrier Noise Bandwidth (dB-Hz)                          -73.5           -68.3           -48.8           -60.9
Uplink C/N(dB)                                            24.6            14.7            14.0            13.9
DOWNLINK PERFORMANCE
Downlink EIRP per Carrier (dBW)                          41.4            36.2            16.0            28.0
Antenna Pointing Error (dB)                                -.5             -.5             -.5             -.5
Downlink Path Loss, Clear Sky (dB)                      -205.3          -205.3          -205.3          -205.3
Downlink Rain Attenuation                                  0.0             0.0            0.0             0.0
Earth Station G/T (dB/K)                                  21.6            21.6            21.6            21.6
Boltzman Constant(dBW / K - Hz)                          228.6           228.6           228.6           228.6
Carrier Noise Bandwidth (dB-Hz)                          -73.5           -68.3           -48.8           -60.9
Downlink C / N(dB)                                        12.3            12.3            11.7            11.6
COMPOSITE LINK PERFORMANCE
C/N Uplink (dB)                                          24.6            14.7            14.0            13.9
C/N Downlink (dB)                                        12.3            12.3            11.7            11.6
C/I Intermodulation (dB)                                 N/A             15.0            14.3            14.2
C/I Uplink Co-Channel (dB)*                              24.0            23.0            23.0            23.3
C/I Downlink Co-Channel (dB)*                            24.0            23.0            23.0            23.3
C/I Uplink Adjacent Satellite 1 (dB)                     30.1            20.1            19.5            19.3
C/I Downlink Adjacent Satellite 1 (dB)                   15.3            15.4            14.7            14.6
C/I Uplink Adjacent Satellite 2 (dB)                     30.1            20.1            19.5            19.3
C/I Downlink Adjacent Satellite 2 (dB)                   17.5            17.6            16.9            16.8

C/(N+I) Composite (dB)                                   9.2             7.0             6.4             6.3
Required System Margin (dB)                              -1.0            -1.0            -1.0            -1.0
Net C/(N+I) Composite (dB)                               8.2             6.0              5.4             5.3
Minimum Required C/N (dB)                                -3.4            -3.9            -3.0            -3.4
Excess Link Margin (dB)                                  4.9             2.1             2.4             1.9
CARRIER DENSITY LEVELS
Uplink Power Density (dBW/Hz)                            -50.6           -60.6           -61.2           -61.3
Downlink EIRP Density At Beam Peak (dBW/Hz)              -26.1           -26.1           -26.7           -26.9




                                              Page 16 of 23


     EXHIBIT 4: INTERFERENCE ANALYSIS (continued)
UPLINK BEAM INFORMATION
                                                     Extended Ku     Extended Ku     Extended Ku     Extended Ku
Uplink Beam Name
                                                       Europe          Europe          Europe          Europe
Uplink Frequency (MHz)                               13.75 – 14.00   13.75 – 14.00   13.75 – 14.00   13.75 – 14.00
Uplink Beam Polarization                                Vertical        Vertical        Vertical        Vertical
Uplink Contour G/T (dB/K)                                 -2.8            -2.8            -2.8            -2.8
Uplink SFD (dBW/m2)                                      -73.2           -85.2           -85.2           -85.2
Rain Rate (mm/hr)                                        42.0             42.0            42.0            42.0
DOWNLINK BEAM INFORMATION
                                                     Extended Ku     Extended Ku     Extended Ku     Extended Ku
Downlink Beam Name
                                                       Europe          Europe          Europe          Europe
Downlink Frequency (MHz)                             10.95–11.20     10.95–11.20     10.95–11.20     10.95–11.20
Downlink Beam Polarization                            Horizontal      Horizontal      Horizontal      Horizontal
Downlink Contour EIRP (dBW)                              46.1            46.1            46.1            46.1
Rain Rate (mm/hr)                                        42.0            42.0            42.0            42.0
ADJACENT SATELLITE 1
Satellite 1 Orbital Location                           40.9 E.L.       40.9 E.L.       40.9 E.L.       40.9 E.L.
Uplink Power Density (dBW/Hz)                            -50.0           -50.0           -50.0           -50.0
Downlink EIRP Density (dBW/Hz)                           -26.0           -26.0           -26.0           -26.0
ADJACENT SATELLITE 2
Satellite 1 Orbital Location                           44.9 E.L.       44.9 E.L.       44.9 E.L.       44.9 E.L.
Uplink Power Density (dBW/Hz)                            -50.0           -50.0           -50.0           -50.0
Downlink EIRP Density (dBW/Hz)                           -26.0           -26.0           -26.0           -26.0
CARRIER INFORMATION
Carrier ID                                           27M0G7W         10M3G7W          100KG7W         1M45G7W
Carrier Modulation                                      QPSK            QPSK            QPSK            BPSK
Peak to Peak Bandwidth of EDS (MHz)                      N/A             N/A             N/A             N/A
Information Rate(kbps)                                  18432            6000             64             512
Code Rate                                            1/2x188/204     1/2x188/204     1/2x239/256        R1/2
Occupied Bandwidth(kHz)                                 22600           6771.1           75.4          1229.0
Allocated Bandwidth(kHz)                                27000           10300            100           1450.0
Minimum C/N, Clear Sky (dB)                              3.4              3.9            3.0             3.4
Minimum C/N, Rain (dB)                                   3.4              3.6             2.8            2.7
UPLINK EARTH STATION
Earth Station Diameter (meters)                           6.1             6.1             6.1             6.1
Earth Station Gain (dBi)                                 56.7            56.7            56.7            56.7
Earth Station Elevation Angle                             20              20              20              20
DOWNLINK EARTH STATION
Earth Station Diameter (meters)                          1.8             1.8             1.8             1.8
Earth Station Gain (dBi)                                44.1            44.1            44.1            44.1
Earth Station G/T (dB/K)                                21.6            21.6            21.6            21.6
Earth Station Elevation Angle                            20              20              20              20
LINK FADE TYPE                                        Clear Sky       Clear Sky       Clear Sky       Clear Sky
UPLINK PERFORMANCE
Uplink Earth Station EIRP (dBW)                           79.7            64.3            44.1            56.1
Uplink Path Loss, Clear Sky (dB)                        -207.2          -207.2          -207.2          -207.2
Uplink Rain Attenuation                                   0.0             0.0             0.0             0.0
Satellite G/T(dB/K)                                       -2.8            -2.8            -2.8            -2.8
Boltzman Constant(dBW/K-Hz)                             228.6            228.6           228.6           228.6
Carrier Noise Bandwidth (dB-Hz)                          -73.5           -68.3           -48.8           -60.9
Uplink C/N(dB)                                            24.7            14.6            13.9            13.8
DOWNLINK PERFORMANCE
Downlink EIRP per Carrier (dBW)                          41.5            36.1            15.9            27.9
Antenna Pointing Error (dB)                                -.5             -.5             -.5             -.5
Downlink Path Loss, Clear Sky (dB)                      -205.3          -205.3          -205.3          -205.3
Downlink Rain Attenuation                                  0.0             0.0            0.0             0.0
Earth Station G/T (dB/K)                                  21.6            21.6            21.6            21.6
Boltzman Constant(dBW / K - Hz)                          228.6           228.6           228.6           228.6
Carrier Noise Bandwidth (dB-Hz)                          -73.5           -68.3           -48.8           -60.9
Downlink C / N(dB)                                        12.4            12.2            11.6            11.4
COMPOSITE LINK PERFORMANCE
C/N Uplink (dB)                                          24.7            14.6            13.9            13.8
C/N Downlink (dB)                                        12.4            12.2            11.6            11.4
C/I Intermodulation (dB)                                 N/A             14.8            14.1            14.0
C/I Uplink Co-Channel (dB)*                              24.0            22.8            22.7            23.1
C/I Downlink Co-Channel (dB)*                            24.0            22.8            22.7            23.1
C/I Uplink Adjacent Satellite 1 (dB)                     30.2            20.0            19.4            19.2
C/I Downlink Adjacent Satellite 1 (dB)                   15.4            15.3            14.6            14.5
C/I Uplink Adjacent Satellite 2 (dB)                     30.2            20.0            19.4            19.2
C/I Downlink Adjacent Satellite 2 (dB)                   17.6            17.5            16.8            16.7

C/(N+I) Composite (dB)                                   9.3             6.9             6.2             6.1
Required System Margin (dB)                              -1.0            -1.0            -1.0            -1.0
Net C/(N+I) Composite (dB)                               8.3             5.9              5.2             5.1
Minimum Required C/N (dB)                                -3.4            -3.9            -3.0            -3.4
Excess Link Margin (dB)                                  5.0             2.0             2.2             1.7
CARRIER DENSITY LEVELS
Uplink Power Density (dBW/Hz)                            -50.5           -60.7           -61.3           -61.4
Downlink EIRP Density At Beam Peak (dBW/Hz)              -26.0           -26.2           -26.9           -27.0




                                              Page 17 of 23


     EXHIBIT 4: INTERFERENCE ANALYSIS (continued)
UPLINK BEAM INFORMATION
                                                     Extended Ku     Extended Ku     Extended Ku     Extended Ku
Uplink Beam Name
                                                       Europe          Europe          Europe          Europe
Uplink Frequency (MHz)                               13.75 – 14.00   13.75 – 14.00   13.75 – 14.00   13.75 – 14.00
Uplink Beam Polarization                              Horizontal      Horizontal      Horizontal      Horizontal
Uplink Contour G/T (dB/K)                                 -2.8            -2.8            -2.8            -2.8
Uplink SFD (dBW/m2)                                      -73.3           -83.3           -83.3           -83.3
Rain Rate (mm/hr)                                        42.0             42.0            42.0            42.0
DOWNLINK BEAM INFORMATION

Downlink Beam Name                                      Africa          Africa          Africa          Africa

Downlink Frequency (MHz)                             10.95–11.20     10.95–11.20     10.95–11.20     10.95–11.20
Downlink Beam Polarization                             Vertical        Vertical        Vertical        Vertical
Downlink Contour EIRP (dBW)                              45.9            45.9            45.9            45.9
Rain Rate (mm/hr)                                        95.0            95.0            95.0            95.0
ADJACENT SATELLITE 1
Satellite 1 Orbital Location                           40.9 E.L.       40.9 E.L.       40.9 E.L.       40.9 E.L.
Uplink Power Density (dBW/Hz)                            -50.0           -50.0           -50.0           -50.0
Downlink EIRP Density (dBW/Hz)                           -26.0           -26.0           -26.0           -26.0
ADJACENT SATELLITE 2
Satellite 1 Orbital Location                           44.9 E.L.       44.9 E.L.       44.9 E.L.       44.9 E.L.
Uplink Power Density (dBW/Hz)                            -50.0           -50.0           -50.0           -50.0
Downlink EIRP Density (dBW/Hz)                           -26.0           -26.0           -26.0           -26.0
CARRIER INFORMATION
Carrier ID                                           27M0G7W         10M3G7W          100KG7W         1M45G7W
Carrier Modulation                                      QPSK            QPSK            QPSK            BPSK
Peak to Peak Bandwidth of EDS (MHz)                      N/A             N/A             N/A             N/A
Information Rate(kbps)                                  18432            6000             64             512
Code Rate                                            1/2x188/204     1/2x188/204     1/2x239/256        R1/2
Occupied Bandwidth(kHz)                                 22600           6771.1           75.4          1229.0
Allocated Bandwidth(kHz)                                27000           10300            100           1450.0
Minimum C/N, Clear Sky (dB)                              3.4              3.9            3.0             3.4
Minimum C/N, Rain (dB)                                   3.4              3.6             2.8            2.7
UPLINK EARTH STATION
Earth Station Diameter (meters)                           6.1             6.1             6.1             6.1
Earth Station Gain (dBi)                                 56.7            56.7            56.7            56.7
Earth Station Elevation Angle                             20              20              20              20
DOWNLINK EARTH STATION
Earth Station Diameter (meters)                          1.8             1.8             1.8             1.8
Earth Station Gain (dBi)                                44.1            44.1            44.1            44.1
Earth Station G/T (dB/K)                                21.6            21.6            21.6            21.6
Earth Station Elevation Angle                            20              20              20              20
LINK FADE TYPE                                        Clear Sky       Clear Sky       Clear Sky       Clear Sky
UPLINK PERFORMANCE
Uplink Earth Station EIRP (dBW)                           79.8            66.6            46.4            58.4
Uplink Path Loss, Clear Sky (dB)                        -207.2          -207.2          -207.2          -207.2
Uplink Rain Attenuation                                   0.0             0.0             0.0             0.0
Satellite G/T(dB/K)                                       -2.8            -2.8            -2.8            -2.8
Boltzman Constant(dBW/K-Hz)                             228.6            228.6           228.6           228.6
Carrier Noise Bandwidth (dB-Hz)                          -73.5           -68.3           -48.8           -60.9
Uplink C/N(dB)                                            24.8            16.9            16.2            16.1
DOWNLINK PERFORMANCE
Downlink EIRP per Carrier (dBW)                          41.5            36.3            16.1            28.1
Antenna Pointing Error (dB)                                -.5             -.5             -.5             -.5
Downlink Path Loss, Clear Sky (dB)                      -205.2          -205.2          -205.2          -205.2
Downlink Rain Attenuation                                  0.0             0.0            0.0             0.0
Earth Station G/T (dB/K)                                  21.6            21.6            21.6            21.6
Boltzman Constant(dBW / K - Hz)                          228.6           228.6           228.6           228.6
Carrier Noise Bandwidth (dB-Hz)                          -73.5           -68.3           -48.8           -60.9
Downlink C / N(dB)                                        12.4            12.4            11.8            11.7
COMPOSITE LINK PERFORMANCE
C/N Uplink (dB)                                          24.8            16.9            16.2            16.1
C/N Downlink (dB)                                        12.4            12.4            11.8            11.7
C/I Intermodulation (dB)                                 N/A             15.2            14.5            14.4
C/I Uplink Co-Channel (dB)*                              24.0            23.2            23.2            23.5
C/I Downlink Co-Channel (dB)*                            24.0            23.2            23.2            23.5
C/I Uplink Adjacent Satellite 1 (dB)                     30.3            22.3            21.7            21.5
C/I Downlink Adjacent Satellite 1 (dB)                   15.4            15.5            14.8            14.7
C/I Uplink Adjacent Satellite 2 (dB)                     30.3            22.3            21.7            21.5
C/I Downlink Adjacent Satellite 2 (dB)                   17.6            17.6            17.0            16.9

C/(N+I) Composite (dB)                                   9.3             7.6             6.9             6.8
Required System Margin (dB)                              -1.0            -1.0            -1.0            -1.0
Net C/(N+I) Composite (dB)                               8.3             6.6              5.9             5.8
Minimum Required C/N (dB)                                -3.4            -3.9            -3.0            -3.4
Excess Link Margin (dB)                                  4.9             2.7             3.0             2.4
CARRIER DENSITY LEVELS
Uplink Power Density (dBW/Hz)                            -50.4           -58.4           -59.0           -59.1
Downlink EIRP Density At Beam Peak (dBW/Hz)              -26.1           -26.0           -26.7           -26.8




                                              Page 18 of 23


     EXHIBIT 4: INTERFERENCE ANALYSIS (continued)
UPLINK BEAM INFORMATION
                                                     Extended Ku     Extended Ku     Extended Ku     Extended Ku
Uplink Beam Name
                                                       Europe          Europe          Europe          Europe
Uplink Frequency (MHz)                               13.75 – 14.00   13.75 – 14.00   13.75 – 14.00   13.75 – 14.00
Uplink Beam Polarization                                Vertical        Vertical        Vertical        Vertical
Uplink Contour G/T (dB/K)                                 -2.8            -2.8            -2.8            -2.8
Uplink SFD (dBW/m2)                                      -73.2           -82.2           -82.2           -82.2
Rain Rate (mm/hr)                                        42.0             42.0            42.0            42.0
DOWNLINK BEAM INFORMATION

Downlink Beam Name                                      Africa          Africa          Africa          Africa

Downlink Frequency (MHz)                             10.95–11.20     10.95–11.20     10.95–11.20     10.95–11.20
Downlink Beam Polarization                            Horizontal      Horizontal      Horizontal      Horizontal
Downlink Contour EIRP (dBW)                              46.5            46.5            46.5            46.5
Rain Rate (mm/hr)                                        95.0            95.0            95.0            95.0
ADJACENT SATELLITE 1
Satellite 1 Orbital Location                           40.9 E.L.       40.9 E.L.       40.9 E.L.       40.9 E.L.
Uplink Power Density (dBW/Hz)                            -50.0           -50.0           -50.0           -50.0
Downlink EIRP Density (dBW/Hz)                           -26.0           -26.0           -26.0           -26.0
ADJACENT SATELLITE 2
Satellite 1 Orbital Location                           44.9 E.L.       44.9 E.L.       44.9 E.L.       44.9 E.L.
Uplink Power Density (dBW/Hz)                            -50.0           -50.0           -50.0           -50.0
Downlink EIRP Density (dBW/Hz)                           -26.0           -26.0           -26.0           -26.0
CARRIER INFORMATION
Carrier ID                                           27M0G7W         10M3G7W          100KG7W         1M45G7W
Carrier Modulation                                      QPSK            QPSK            QPSK            BPSK
Peak to Peak Bandwidth of EDS (MHz)                      N/A             N/A             N/A             N/A
Information Rate(kbps)                                  18432            6000             64             512
Code Rate                                            1/2x188/204     1/2x188/204     1/2x239/256        R1/2
Occupied Bandwidth(kHz)                                 22600           6771.1           75.4          1229.0
Allocated Bandwidth(kHz)                                27000           10300            100           1450.0
Minimum C/N, Clear Sky (dB)                              3.4              3.9            3.0             3.4
Minimum C/N, Rain (dB)                                   3.4              3.6             2.8            2.7
UPLINK EARTH STATION
Earth Station Diameter (meters)                           6.1             6.1             6.1             6.1
Earth Station Gain (dBi)                                 56.7            56.7            56.7            56.7
Earth Station Elevation Angle                             20              20              20              20
DOWNLINK EARTH STATION
Earth Station Diameter (meters)                          1.8             1.8             1.8             1.8
Earth Station Gain (dBi)                                44.1            44.1            44.1            44.1
Earth Station G/T (dB/K)                                21.6            21.6            21.6            21.6
Earth Station Elevation Angle                            20              20              20              20
LINK FADE TYPE                                        Clear Sky       Clear Sky       Clear Sky       Clear Sky
UPLINK PERFORMANCE
Uplink Earth Station EIRP (dBW)                           79.2            67.2            46.9            58.9
Uplink Path Loss, Clear Sky (dB)                        -207.2          -207.2          -207.2          -207.2
Uplink Rain Attenuation                                   0.0             0.0             0.0             0.0
Satellite G/T(dB/K)                                       -2.8            -2.8            -2.8            -2.8
Boltzman Constant(dBW/K-Hz)                             228.6            228.6           228.6           228.6
Carrier Noise Bandwidth (dB-Hz)                          -73.5           -68.3           -48.8           -60.9
Uplink C/N(dB)                                            24.2            17.4            16.7            16.6
DOWNLINK PERFORMANCE
Downlink EIRP per Carrier (dBW)                          41.5            36.3            16.1            28.1
Antenna Pointing Error (dB)                                -.5             -.5             -.5             -.5
Downlink Path Loss, Clear Sky (dB)                      -205.3          -205.3          -205.3          -205.3
Downlink Rain Attenuation                                  0.0             0.0            0.0             0.0
Earth Station G/T (dB/K)                                  21.6            21.6            21.6            21.6
Boltzman Constant(dBW / K - Hz)                          228.6           228.6           228.6           228.6
Carrier Noise Bandwidth (dB-Hz)                          -73.5           -68.3           -48.8           -60.9
Downlink C / N(dB)                                        12.3            12.5            11.8            11.7
COMPOSITE LINK PERFORMANCE
C/N Uplink (dB)                                          24.2            17.4            16.7            16.6
C/N Downlink (dB)                                        12.3            12.5            11.8            11.7
C/I Intermodulation (dB)                                 N/A             14.6            13.9            13.8
C/I Uplink Co-Channel (dB)*                              24.0            22.7            22.6            22.9
C/I Downlink Co-Channel (dB)*                            24.0            22.7            22.6            22.9
C/I Uplink Adjacent Satellite 1 (dB)                     29.7            22.9            22.2            22.0
C/I Downlink Adjacent Satellite 1 (dB)                   15.4            15.5            14.8            14.7
C/I Uplink Adjacent Satellite 2 (dB)                     29.7            22.9            22.2            22.0
C/I Downlink Adjacent Satellite 2 (dB)                   17.6            17.7            17.0            16.9

C/(N+I) Composite (dB)                                   9.3             7.6             6.9             6.8
Required System Margin (dB)                              -1.0            -1.0            -1.0            -1.0
Net C/(N+I) Composite (dB)                               8.3             6.6              5.9             5.8
Minimum Required C/N (dB)                                -3.4            -3.9            -3.0            -3.4
Excess Link Margin (dB)                                  4.9             2.7             2.9             2.4
CARRIER DENSITY LEVELS
Uplink Power Density (dBW/Hz)                            -51.0           -57.8           -58.5           -58.6
Downlink EIRP Density At Beam Peak (dBW/Hz)              -26.1           -26.0           -26.7           -26.8




                                              Page 19 of 23


   EXHIBIT 4: INTERFERENCE ANALYSIS (continued)
UPLINK BEAM INFORMATION

Uplink Beam Name                                        Africa         Africa         Africa         Africa

Uplink Frequency (MHz)                                14.0 – 14.25   14.0 – 14.25   14.0 – 14.25   14.0 – 14.25
Uplink Beam Polarization                               Horizontal     Horizontal     Horizontal     Horizontal
Uplink Contour G/T (dB/K)                                 -2.3           -2.3           -2.3           -2.3
Uplink SFD (dBW/m2)                                      -74.3          -83.3          -83.3          -83.3
Rain Rate (mm/hr)                                         95.0           95.0           95.0           95.0
DOWNLINK BEAM INFORMATION

Downlink Beam Name                                      Africa         Africa         Africa         Africa

Downlink Frequency (MHz)                              10.95–11.20    10.95–11.20    10.95–11.20    10.95–11.20
Downlink Beam Polarization                              Vertical       Vertical       Vertical       Vertical
Downlink Contour EIRP (dBW)                               45.9           45.9           45.9           45.9
Rain Rate (mm/hr)                                         95.0           95.0           95.0           95.0
ADJACENT SATELLITE 1
Satellite 1 Orbital Location                           40.9 E.L.      40.9 E.L.      40.9 E.L.      40.9 E.L.
Uplink Power Density (dBW/Hz)                            -50.0          -50.0          -50.0          -50.0
Downlink EIRP Density (dBW/Hz)                           -26.0          -26.0          -26.0          -26.0
ADJACENT SATELLITE 2
Satellite 1 Orbital Location                           44.9 E.L.      44.9 E.L.      44.9 E.L.      44.9 E.L.
Uplink Power Density (dBW/Hz)                            -50.0          -50.0          -50.0          -50.0
Downlink EIRP Density (dBW/Hz)                           -26.0          -26.0          -26.0          -26.0
CARRIER INFORMATION
Carrier ID                                             27M0G7W        10M3G7W        100KG7W       1M45G7W
Carrier Modulation                                       QPSK           QPSK           QPSK          BPSK
Peak to Peak Bandwidth of EDS (MHz)                       N/A            N/A            N/A           N/A
Information Rate(kbps)                                   18432           6000            64           512
Code Rate                                             1/2x188/204    1/2x188/204    1/2x239/256      R1/2
Occupied Bandwidth(kHz)                                  22600          6771.1          75.4        1229.0
Allocated Bandwidth(kHz)                                 27000          10300           100         1450.0
Minimum C/N, Clear Sky (dB)                               3.4             3.9            3.0          3.4
Minimum C/N, Rain (dB)                                    3.4             3.6            2.8          2.7
UPLINK EARTH STATION
Earth Station Diameter (meters)                           6.1            6.1            6.1            6.1
Earth Station Gain (dBi)                                 56.8           56.8           56.8           56.8
Earth Station Elevation Angle                             20             20             20             20
DOWNLINK EARTH STATION
Earth Station Diameter (meters)                           1.8            2.4            2.4            2.4
Earth Station Gain (dBi)                                 44.1           46.8           46.8           46.8
Earth Station G/T (dB/K)                                 21.6           24.3           24.3           24.3
Earth Station Elevation Angle                             20             20             20             20
LINK FADE TYPE                                         Clear Sky      Clear Sky      Clear Sky      Clear Sky
UPLINK PERFORMANCE
Uplink Earth Station EIRP (dBW)                           78.8           66.6           46.5           58.5
Uplink Path Loss, Clear Sky (dB)                        -207.4         -207.4         -207.4         -207.4
Uplink Rain Attenuation                                    0.0            0.0            0.0            0.0
Satellite G/T(dB/K)                                       -2.3           -2.3           -2.3           -2.3
Boltzman Constant(dBW/K-Hz)                             228.6          228.6           228.6          228.6
Carrier Noise Bandwidth (dB-Hz)                          -73.5          -68.3          -48.8          -60.9
Uplink C/N(dB)                                            24.2           17.2           16.7           16.5
DOWNLINK PERFORMANCE
Downlink EIRP per Carrier (dBW)                          41.5           36.3           16.2           28.2
Antenna Pointing Error (dB)                                -.5            -.5            -.5            -.5
Downlink Path Loss, Clear Sky (dB)                      -205.3         -205.3         -205.3         -205.3
Downlink Rain Attenuation                                  0.0            0.0            0.0            0.0
Earth Station G/T (dB/K)                                  21.6           24.3           24.3           24.3
Boltzman Constant(dBW / K - Hz)                          228.6          228.6          228.6          228.6
Carrier Noise Bandwidth (dB-Hz)                          -73.5          -68.3          -48.8          -60.9
Downlink C / N(dB)                                        12.4           15.1           14.6           14.4
COMPOSITE LINK PERFORMANCE
C/N Uplink (dB)                                          24.2           17.2           16.7           16.5
C/N Downlink (dB)                                        12.4           15.1           14.6           14.4
C/I Intermodulation (dB)                                 N/A            15.1           14.6           14.5
C/I Uplink Co-Channel (dB)*                              24.0           23.2           23.3           23.6
C/I Downlink Co-Channel (dB)*                            24.0           23.2           23.3           23.6
C/I Uplink Adjacent Satellite 1 (dB)                     29.3           22.3           21.8           21.6
C/I Downlink Adjacent Satellite 1 (dB)                   15.4           18.4           17.9           17.8
C/I Uplink Adjacent Satellite 2 (dB)                     29.3           22.3           21.8           21.6
C/I Downlink Adjacent Satellite 2 (dB)                   17.6           20.1           19.6           19.4

C/(N+I) Composite (dB)                                    9.3            9.0            8.5            8.4
Required System Margin (dB)                               -1.0           -1.0           -1.0           -1.0
Net C/(N+I) Composite (dB)                                8.3            8.0             7.5            7.4
Minimum Required C/N (dB)                                 -3.4           -3.9           -3.0           -3.4
Excess Link Margin (dB)                                   4.9            4.1            4.5            4.0
CARRIER DENSITY LEVELS
Uplink Power Density (dBW/Hz)                            -51.6          -58.6          -59.1          -59.2
Downlink EIRP Density At Beam Peak (dBW/Hz)              -26.1          -26.0          -26.5          -26.7




                                              Page 20 of 23


     EXHIBIT 4: INTERFERENCE ANALYSIS (continued)
UPLINK BEAM INFORMATION

Uplink Beam Name                                        Africa          Africa          Africa          Africa

Uplink Frequency (MHz)                               14.0 – 14.25    14.0 – 14.25    14.0 – 14.25    14.0 – 14.25
Uplink Beam Polarization                               Vertical        Vertical        Vertical        Vertical
Uplink Contour G/T (dB/K)                                -1.7            -1.7            -1.7            -1.7
Uplink SFD (dBW/m2)                                     -75.9           -82.9           -82.9           -82.9
Rain Rate (mm/hr)                                        95.0            95.0            95.0            95.0
DOWNLINK BEAM INFORMATION

Downlink Beam Name                                      Africa          Africa          Africa          Africa

Downlink Frequency (MHz)                             10.95 – 11.20   10.95 – 11.20   10.95 – 11.20   10.95 – 11.20
Downlink Beam Polarization                            Horizontal      Horizontal      Horizontal      Horizontal
Downlink Contour EIRP (dBW)                              46.5            46.5            46.5            46.5
Rain Rate (mm/hr)                                        95.0            95.0            95.0            95.0
ADJACENT SATELLITE 1
Satellite 1 Orbital Location                           40.9 E.L.       40.9 E.L.       40.9 E.L.       40.9 E.L.
Uplink Power Density (dBW/Hz)                            -50.0           -50.0           -50.0           -50.0
Downlink EIRP Density (dBW/Hz)                           -26.0           -26.0           -26.0           -26.0
ADJACENT SATELLITE 2
Satellite 1 Orbital Location                           44.9 E.L.       44.9 E.L.       44.9 E.L.       44.9 E.L.
Uplink Power Density (dBW/Hz)                            -50.0           -50.0           -50.0           -50.0
Downlink EIRP Density (dBW/Hz)                           -26.0           -26.0           -26.0           -26.0
CARRIER INFORMATION
Carrier ID                                           27M0G7W         10M3G7W          100KG7W         1M45G7W
Carrier Modulation                                      QPSK            QPSK            QPSK            BPSK
Peak to Peak Bandwidth of EDS (MHz)                      N/A             N/A             N/A             N/A
Information Rate(kbps)                                  18432            6000             64             512
Code Rate                                            1/2x188/204     1/2x188/204     1/2x239/256        R1/2
Occupied Bandwidth(kHz)                                 22600           6771.1           75.4          1229.0
Allocated Bandwidth(kHz)                                27000           10300            100           1450.0
Minimum C/N, Clear Sky (dB)                              3.4              3.9            3.0             3.4
Minimum C/N, Rain (dB)                                   3.4              3.6             2.8            2.7
UPLINK EARTH STATION
Earth Station Diameter (meters)                           6.1             6.1             6.1             6.1
Earth Station Gain (dBi)                                 56.8            56.8            56.8            56.8
Earth Station Elevation Angle                             20              20              20              20
DOWNLINK EARTH STATION
Earth Station Diameter (meters)                          1.8             2.4             2.4             2.4
Earth Station Gain (dBi)                                44.1            46.8            46.8            46.8
Earth Station G/T (dB/K)                                21.6            24.3            24.3            24.3
Earth Station Elevation Angle                            20              20              20              20
LINK FADE TYPE                                        Clear Sky       Clear Sky       Clear Sky       Clear Sky
UPLINK PERFORMANCE
Uplink Earth Station EIRP (dBW)                           76.5            66.3            46.1            58.1
Uplink Path Loss, Clear Sky (dB)                        -207.4          -207.4          -207.4          -207.4
Uplink Rain Attenuation                                   0.0             0.0             0.0             0.0
Satellite G/T(dB/K)                                       -1.7            -1.7            -1.7            -1.7
Boltzman Constant(dBW/K-Hz)                             228.6            228.6           228.6           228.6
Carrier Noise Bandwidth (dB-Hz)                          -73.5           -68.3           -48.8           -60.9
Uplink C/N(dB)                                            22.5            17.5            16.9            16.7
DOWNLINK PERFORMANCE
Downlink EIRP per Carrier (dBW)                          41.5            36.2            16.0            28.0
Antenna Pointing Error (dB)                                -.5             -.5             -.5             -.5
Downlink Path Loss, Clear Sky (dB)                      -205.3          -205.3          -205.3          -205.3
Downlink Rain Attenuation                                  0.0             0.0            0.0             0.0
Earth Station G/T (dB/K)                                  21.6            24.3            24.3            24.3
Boltzman Constant(dBW / K - Hz)                          228.6           228.6           228.6           228.6
Carrier Noise Bandwidth (dB-Hz)                          -73.5           -68.3           -48.8           -60.9
Downlink C / N(dB)                                        12.3            15.0            14.4            14.2
COMPOSITE LINK PERFORMANCE
C/N Uplink (dB)                                          22.5            17.5            16.9            16.7
C/N Downlink (dB)                                        12.3            15.0            14.4            14.2
C/I Intermodulation (dB)                                 N/A             14.4            13.8            13.7
C/I Uplink Co-Channel (dB)*                              24.0            22.5            22.5            22.8
C/I Downlink Co-Channel (dB)*                            24.0            22.5            22.5            22.8
C/I Uplink Adjacent Satellite 1 (dB)                     27.0            22.0            21.4            21.2
C/I Downlink Adjacent Satellite 1 (dB)                   15.4            18.3            17.7            17.6
C/I Uplink Adjacent Satellite 2 (dB)                     27.0            22.0            21.4            21.2
C/I Downlink Adjacent Satellite 2 (dB)                   17.6            20.0            19.4            19.2

C/(N+I) Composite (dB)                                   9.1             8.7             8.2             8.1
Required System Margin (dB)                              -1.0            -1.0            -1.0            -1.0
Net C/(N+I) Composite (dB)                               8.1             7.7              7.2             7.1
Minimum Required C/N (dB)                                -3.4            -3.9            -3.0            -3.4
Excess Link Margin (dB)                                  4.8             3.8             4.2             3.7
CARRIER DENSITY LEVELS
Uplink Power Density (dBW/Hz)                            -53.9           -58.9           -59.4           -59.6
Downlink EIRP Density At Beam Peak (dBW/Hz)              -26.1           -26.1           -26.7           -26.9




                                              Page 21 of 23


     EXHIBIT 4: INTERFERENCE ANALYSIS (continued)
UPLINK BEAM INFORMATION

Uplink Beam Name                                        Africa          Africa          Africa          Africa

Uplink Frequency (MHz)                               14.0 – 14.25    14.0 – 14.25    14.0 – 14.25    14.0 – 14.25
Uplink Beam Polarization                              Horizontal      Horizontal      Horizontal      Horizontal
Uplink Contour G/T (dB/K)                                -2.3            -2.3            -2.3            -2.3
Uplink SFD (dBW/m2)                                     -74.3           -84.3           -84.3           -84.3
Rain Rate (mm/hr)                                        95.0            95.0            95.0            95.0
DOWNLINK BEAM INFORMATION
                                                     Extended Ku     Extended Ku     Extended Ku     Extended Ku
Downlink Beam Name
                                                       Europe          Europe          Europe          Europe
Downlink Frequency (MHz)                             10.95 – 11.20   10.95 – 11.20   10.95 – 11.20   10.95 – 11.20
Downlink Beam Polarization                              Vertical        Vertical        Vertical        Vertical
Downlink Contour EIRP (dBW)                              46.0            46.0            46.0            46.0
Rain Rate (mm/hr)                                        42.0            42.0            42.0            42.0
ADJACENT SATELLITE 1
Satellite 1 Orbital Location                           40.9 E.L.       40.9 E.L.       40.9 E.L.       40.9 E.L.
Uplink Power Density (dBW/Hz)                            -50.0           -50.0           -50.0           -50.0
Downlink EIRP Density (dBW/Hz)                           -26.0           -26.0           -26.0           -26.0
ADJACENT SATELLITE 2
Satellite 1 Orbital Location                           44.9 E.L.       44.9 E.L.       44.9 E.L.       44.9 E.L.
Uplink Power Density (dBW/Hz)                            -50.0           -50.0           -50.0           -50.0
Downlink EIRP Density (dBW/Hz)                           -26.0           -26.0           -26.0           -26.0
CARRIER INFORMATION
Carrier ID                                           27M0G7W         10M3G7W          100KG7W         1M45G7W
Carrier Modulation                                      QPSK            QPSK            QPSK            BPSK
Peak to Peak Bandwidth of EDS (MHz)                      N/A             N/A             N/A             N/A
Information Rate(kbps)                                  18432            6000             64             512
Code Rate                                            1/2x188/204     1/2x188/204     1/2x239/256        R1/2
Occupied Bandwidth(kHz)                                 22600           6771.1           75.4          1229.0
Allocated Bandwidth(kHz)                                27000           10300            100           1450.0
Minimum C/N, Clear Sky (dB)                              3.4              3.9            3.0             3.4
Minimum C/N, Rain (dB)                                   3.4              3.6             2.8            2.7
UPLINK EARTH STATION
Earth Station Diameter (meters)                           6.1             6.1             6.1             6.1
Earth Station Gain (dBi)                                 56.8            56.8            56.8            56.8
Earth Station Elevation Angle                             20              20              20              20
DOWNLINK EARTH STATION
Earth Station Diameter (meters)                          1.8             2.4             2.4             2.4
Earth Station Gain (dBi)                                44.1            46.8            46.8            46.8
Earth Station G/T (dB/K)                                21.6            24.3            24.3            24.3
Earth Station Elevation Angle                            20              20              20              20
LINK FADE TYPE                                        Clear Sky       Clear Sky       Clear Sky       Clear Sky
UPLINK PERFORMANCE
Uplink Earth Station EIRP (dBW)                           78.6            65.5            45.4            57.4
Uplink Path Loss, Clear Sky (dB)                        -207.4          -207.4          -207.4          -207.4
Uplink Rain Attenuation                                   0.0             0.0             0.0             0.0
Satellite G/T(dB/K)                                       -2.3            -2.3            -2.3            -2.3
Boltzman Constant(dBW/K-Hz)                             228.6            228.6           228.6           228.6
Carrier Noise Bandwidth (dB-Hz)                          -73.5           -68.3           -48.8           -60.9
Uplink C/N(dB)                                            24.0            16.1            15.6            15.4
DOWNLINK PERFORMANCE
Downlink EIRP per Carrier (dBW)                          41.4            36.3            16.2            28.2
Antenna Pointing Error (dB)                                -.5             -.5             -.5             -.5
Downlink Path Loss, Clear Sky (dB)                      -205.3          -205.3          -205.3          -205.3
Downlink Rain Attenuation                                  0.0             0.0            0.0             0.0
Earth Station G/T (dB/K)                                  21.6            24.3            24.3            24.3
Boltzman Constant(dBW / K - Hz)                          228.6           228.6           228.6           228.6
Carrier Noise Bandwidth (dB-Hz)                          -73.5           -68.3           -48.8           -60.9
Downlink C / N(dB)                                        12.3            15.1            14.6            14.4
COMPOSITE LINK PERFORMANCE
C/N Uplink (dB)                                          24.0            16.1            15.6            15.4
C/N Downlink (dB)                                        12.3            15.1            14.6            14.4
C/I Intermodulation (dB)                                 N/A             15.0            14.5            14.4
C/I Uplink Co-Channel (dB)*                              24.0            23.1            23.1            23.5
C/I Downlink Co-Channel (dB)*                            24.0            23.1            23.1            23.5
C/I Uplink Adjacent Satellite 1 (dB)                     29.1            21.2            20.7            20.5
C/I Downlink Adjacent Satellite 1 (dB)                   15.3            18.4            17.9            17.8
C/I Uplink Adjacent Satellite 2 (dB)                     29.1            21.2            20.7            20.5
C/I Downlink Adjacent Satellite 2 (dB)                   17.5            20.1            19.6            19.4

C/(N+I) Composite (dB)                                   9.2             8.7             8.2             8.0
Required System Margin (dB)                              -1.0            -1.0            -1.0            -1.0
Net C/(N+I) Composite (dB)                               8.2             7.7              7.2             7.0
Minimum Required C/N (dB)                                -3.4            -3.9            -3.0            -3.4
Excess Link Margin (dB)                                  4.8             3.8             4.2             3.6
CARRIER DENSITY LEVELS
Uplink Power Density (dBW/Hz)                            -51.8           -59.7           -60.2           -60.3
Downlink EIRP Density At Beam Peak (dBW/Hz)              -26.1           -26.0           -26.6           -26.7




                                              Page 22 of 23


     EXHIBIT 4: INTERFERENCE ANALYSIS (continued)
UPLINK BEAM INFORMATION

Uplink Beam Name                                        Africa          Africa          Africa          Africa

Uplink Frequency (MHz)                               14.0 – 14.25    14.0 – 14.25    14.0 – 14.25    14.0 – 14.25
Uplink Beam Polarization                               Vertical        Vertical        Vertical        Vertical
Uplink Contour G/T (dB/K)                                -1.7            -1.7            -1.7            -1.7
Uplink SFD (dBW/m2)                                     -75.9           -80.9           -80.9           -80.9
Rain Rate (mm/hr)                                        95.0            95.0            95.0            95.0
DOWNLINK BEAM INFORMATION
                                                     Extended Ku     Extended Ku     Extended Ku     Extended Ku
Downlink Beam Name
                                                       Europe          Europe          Europe          Europe
Downlink Frequency (MHz)                             10.95 – 11.20   10.95 – 11.20   10.95 – 11.20   10.95 – 11.20
Downlink Beam Polarization                            Horizontal      Horizontal      Horizontal      Horizontal
Downlink Contour EIRP (dBW)                              46.1            46.1            46.1            46.1
Rain Rate (mm/hr)                                        42.0            42.0            42.0            42.0
ADJACENT SATELLITE 1
Satellite 1 Orbital Location                           40.9 E.L.       40.9 E.L.       40.9 E.L.       40.9 E.L.
Uplink Power Density (dBW/Hz)                            -50.0           -50.0           -50.0           -50.0
Downlink EIRP Density (dBW/Hz)                           -26.0           -26.0           -26.0           -26.0
ADJACENT SATELLITE 2
Satellite 1 Orbital Location                           44.9 E.L.       44.9 E.L.       44.9 E.L.       44.9 E.L.
Uplink Power Density (dBW/Hz)                            -50.0           -50.0           -50.0           -50.0
Downlink EIRP Density (dBW/Hz)                           -26.0           -26.0           -26.0           -26.0
CARRIER INFORMATION
Carrier ID                                           27M0G7W         10M3G7W          100KG7W         1M45G7W
Carrier Modulation                                      QPSK            QPSK            QPSK            BPSK
Peak to Peak Bandwidth of EDS (MHz)                      N/A             N/A             N/A             N/A
Information Rate(kbps)                                  18432            6000             64             512
Code Rate                                            1/2x188/204     1/2x188/204     1/2x239/256        R1/2
Occupied Bandwidth(kHz)                                 22600           6771.1           75.4          1229.0
Allocated Bandwidth(kHz)                                27000           10300            100           1450.0
Minimum C/N, Clear Sky (dB)                              3.4              3.9            3.0             3.4
Minimum C/N, Rain (dB)                                   3.4              3.6             2.8            2.7
UPLINK EARTH STATION
Earth Station Diameter (meters)                           6.1             6.1             6.1             6.1
Earth Station Gain (dBi)                                 56.8            56.8            56.8            56.8
Earth Station Elevation Angle                             20              20              20              20
DOWNLINK EARTH STATION
Earth Station Diameter (meters)                          1.8             2.4             1.8             1.8
Earth Station Gain (dBi)                                44.1            46.8            44.1            44.1
Earth Station G/T (dB/K)                                21.6            24.3            21.6            21.6
Earth Station Elevation Angle                            20              20              20              20
LINK FADE TYPE                                        Clear Sky       Clear Sky       Clear Sky       Clear Sky
UPLINK PERFORMANCE
Uplink Earth Station EIRP (dBW)                           77.0            67.9            49.3            61.2
Uplink Path Loss, Clear Sky (dB)                        -207.4          -207.4          -207.4          -207.4
Uplink Rain Attenuation                                   0.0             0.0             0.0             0.0
Satellite G/T(dB/K)                                       -1.7            -1.7            -1.7            -1.7
Boltzman Constant(dBW/K-Hz)                             228.6            228.6           228.6           228.6
Carrier Noise Bandwidth (dB-Hz)                          -73.5           -68.3           -48.8           -60.9
Uplink C/N(dB)                                            23.0            19.1            20.0            19.8
DOWNLINK PERFORMANCE
Downlink EIRP per Carrier (dBW)                          41.5            35.4            16.8            28.7
Antenna Pointing Error (dB)                                -.5             -.5             -.5             -.5
Downlink Path Loss, Clear Sky (dB)                      -205.3          -205.3          -205.3          -205.3
Downlink Rain Attenuation                                  0.0             0.0            0.0             0.0
Earth Station G/T (dB/K)                                  21.6            24.3            21.6            21.6
Boltzman Constant(dBW / K - Hz)                          228.6           228.6           228.6           228.6
Carrier Noise Bandwidth (dB-Hz)                          -73.5           -68.3           -48.8           -60.9
Downlink C / N(dB)                                        12.4            14.2            12.4            12.3
COMPOSITE LINK PERFORMANCE
C/N Uplink (dB)                                          23.0            19.1            20.0            19.8
C/N Downlink (dB)                                        12.4            14.2            12.4            12.3
C/I Intermodulation (dB)                                 N/A             14.1            15.0            14.8
C/I Uplink Co-Channel (dB)*                              24.0            22.1            23.6            23.9
C/I Downlink Co-Channel (dB)*                            24.0            22.1            23.6            23.9
C/I Uplink Adjacent Satellite 1 (dB)                     27.5            23.6            24.5            24.3
C/I Downlink Adjacent Satellite 1 (dB)                   15.4            16.6            15.5            15.3
C/I Uplink Adjacent Satellite 2 (dB)                     27.5            23.6            24.5            24.3
C/I Downlink Adjacent Satellite 2 (dB)                   17.6            18.5            17.7            17.5

C/(N+I) Composite (dB)                                   9.2             8.3             7.9             7.8
Required System Margin (dB)                              -1.0            -1.0            -1.0            -1.0
Net C/(N+I) Composite (dB)                               8.2             7.3              6.9             6.8
Minimum Required C/N (dB)                                -3.4            -3.9            -3.0            -3.4
Excess Link Margin (dB)                                  4.8             3.4             4.0             3.4
CARRIER DENSITY LEVELS
Uplink Power Density (dBW/Hz)                            -53.4           -57.2           -56.3           -56.5
Downlink EIRP Density At Beam Peak (dBW/Hz)              -26.0           -26.9           -26.0           -26.2




                                              Page 23 of 23



Document Created: 2016-08-03 15:00:01
Document Modified: 2016-08-03 15:00:01

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