Attachment Technical Exhibit SAT-AMD-20100514-00101

Attachment Technical Exhibit

This document pretains to SAT-AMD-20100514-00101 for Amended Filing on a Satellite Space Stations filing.

IBFS_SATAMD2010051400101_817266

Technical Exhibit

SkyTerra Subsidiary LLC (“SkyTerra”) amends its pending application by

submitting a revised, complete Schedule S, which includes beam diagrams (gxt files) for

the LE2, LR2, LE5, OmniR, and OmniE beams and link budgets for the Data2, QPSK-V,

and MMS carriers (forward and return). Beam contour maps and links budgets for the

operation of MSAT-2 at 103.3°W are also provided in this Technical Exhibit.

1

Table 1- MSAT MMS Carrier EOC Link Budget
FORWARD RETURN
PARAMETER UNITS (Hub to User) (User to Hub)
Noise Bandwidth kHz 1 1
Boltzmann’s constant dBW/Hz·ºK -228.6 -228.6
UPLINK Clear Clear
Frequency GHz 13 1.64
Earth Station EIRP dBW 47 4.0
Body Shielding Loss dB x 0
Polarization Loss dB x -0.5
Free Space Loss dB -206.7 -188.8
Uplink Fade dB 0 0
Satellite Antenna Gain, EOC dBi 29 29
Received Carrier Power dBW -130.7 -156.3
Satellite G/T dB/ºK -1 5
Intersystem Interference dB 0.5 1
Allowance
C/No dB·Hz 67.4 47.3

C/Imo dB·Hz 52.0 54.0

Satellite C/(No+Io) dB·Hz 51.9 46.5
DOWNLINK
Frequency GHz 1.55 11
Satellite Active Gain dB 123.3 122
Satellite Antenna Gain, EOC dBi 29 29
Satellite EOC EIRP dBW 21.6 -5.3
Free Space Loss dB -188.5 -205.2
Downlink Fade dB x 0
Earth Station G/T dB/ºK -20 36.5
Interference Allowance dB 1 0.5
C/No dB·Hz 40.7 54.1
LINK
Link C/(No+Io) dB·Hz 40.4 45.8
Required C/No dB-Hz 34.2 34.2
Margin dB 6.2 11.6

2

Table 2 – MSAT GC-S Carrier EOC Link Budget
FORWARD RETURN
PARAMETER UNITS (Hub to User) (User to
Hub)
Noise Bandwidth kHz 4 4
Boltzmann’s constant dBW/Hz·ºK -228.6 -228.6
UPLINK Clear Clear
Frequency GHz 13 1.64
Earth Station EIRP dBW 54.5 12
Body Shielding Loss dB x 0
Polarization Loss dB x -0.5
Free Space Loss dB -206.7 -188.8
Uplink Fade dB 0 0
Satellite Antenna Gain, EOC dBi 29 29
Received Carrier Power dBW -123.2 -148.3
Satellite G/T dB/ºK -1 5
Intersystem Interference dB 0.5 1
Allowance
C/No dB·Hz 74.9 55.3

C/Imo dB·Hz 58.0 60.0

Satellite C/(No+Io) dB·Hz 57.9 54.0
DOWNLINK
Frequency GHz 1.55 11
Satellite Active Gain dB 123.3 122
Satellite Antenna Gain, EOC dBi 29 29
Satellite EOC EIRP dBW 29.1 2.7
Free Space Loss dB -188.5 -205.2
Downlink Fade dB x 0
Earth Station G/T dB/ºK -16 36.5
Interference Allowance dB 1 0.5
C/No dB·Hz 52.2 62.1
LINK
Link C/(No+Io) dB·Hz 51.2 53.4
Required C/No dB-Hz 45.0 45.0
Margin dB 6.2 8.4

3

Table 3 – MSAT DATAF Carrier EOC Link Budget
FORWARD RETURN
PARAMETER UNITS (Hub to User) (User to
Hub)
Noise Bandwidth kHz 300 300
Boltzmann’s constant dBW/Hz·ºK -228.6 -228.6
UPLINK Clear Clear
Frequency GHz 13 1.64
Earth Station EIRP dBW 65.5 23.9
Body Shielding Loss dB x 0
Polarization Loss dB x -0.5
Free Space Loss dB -206.7 -188.8
Uplink Fade dB 0 0
Satellite Antenna Gain, EOC dBi 29 29
Received Carrier Power dBW -112.2 -136.4
Satellite G/T dB/ºK -1 5
Intersystem Interference
Allowance dB 0.5 1
C/No dB·Hz 85.9 67.2

C/Imo dB·Hz 76.8 78.8

Satellite C/(No+Io) dB·Hz 76.3 66.9
DOWNLINK
Frequency GHz 1.55 11
Satellite Active Gain dB 123.3 122
Satellite Antenna Gain, EOC dBi 29 29
Satellite EOC EIRP dBW 40.1 14.6
Free Space Loss dB -188.5 -205.2
Downlink Fade dB x 0
Earth Station G/T dB/ºK -10 36.5
Interference Allowance dB 1 0.5
C/No dB·Hz 69.2 74
LINK
Link C/(No+Io) dB·Hz 68.4 66.1
Required C/No dB-Hz 58.8 58.8
Margin dB 9.6 7.3

4

Table 4 - MSAT DATA1 Carrier EOC Link Budget
FORWARD RETURN
PARAMETER UNITS (Hub to User) (User to
Hub)
Noise Bandwidth kHz 168 168
Boltzmann’s constant dBW/Hz·K -228.6 -228.6
UPLINK Clear Clear
Frequency GHz 13 1.64
Earth Station EIRP dBW 55.4 6.5
Body Shielding Loss dB x 0
Polarization Loss dB x -0.5
Free Space Loss dB -206.7 -188.8
Uplink Fade dB 0 0
Satellite Antenna Gain, EOC dBi 29 29
Received Carrier Power dBW -122.3 -153.78
Satellite G/T dB/K -1 5
Intersystem Interference
Allowance dB 0.5 1
C/No dB·Hz 75.8 49.82

C/Imo dB·Hz 74.3 76.3

Satellite C/(No+Io) dB·Hz 71.9 49.8
DOWNLINK
Frequency GHz 1.55 11
Satellite Active Gain dB 123.3 122
Satellite Antenna Gain, EOC dBi 29 29
Satellite EOC EIRP dBW 30 -2.78
Free Space Loss dB -188.5 -205.2
Downlink Fade dB x 0
Earth Station G/T dB/K -25.3 36.5
Interference Allowance dB 1 0.5
C/No dB·Hz 43.8 56.62
LINK
Link C/(No+Io) dB·Hz 43.8 49.0
Required C/No dB-Hz 41.2 41.2
Margin dB 2.6 7.8

5

Table 5 - MSAT DATA2 Carrier EOC Link
Budget
FORWARD RETURN
PARAMETER UNITS (Hub to User) (User to Hub)
Noise Bandwidth kHz 42 42
Boltzmann’s constant dBW/Hz·K -228.6 -228.6
UPLINK Clear Clear
Frequency GHz 13 1.64
Earth Station EIRP dBW 53.4 6.5
Body Shielding Loss dB x 0
Polarization Loss dB x -0.5
Free Space Loss dB -206.7 -188.8
Uplink Fade dB 0 0
Satellite Antenna Gain, EOC dBi 29 29
Received Carrier Power dBW -124.3 -153.78
Satellite G/T dB/K -1 5
Intersystem Interference dB 0.5 1
Allowance
C/No dB·Hz 73.8 49.82

C/Imo dB·Hz 68.2 70.2

Satellite C/(No+Io) dB·Hz 67.2 49.8
DOWNLINK
Frequency GHz 1.55 11
Satellite Active Gain dB 123.3 122
Satellite Antenna Gain, EOC dBi 29 29
Satellite EOC EIRP dBW 28 -2.78
Free Space Loss dB -188.5 -205.2
Downlink Fade dB x 0
Earth Station G/T dB/K -25.3 36.5
Interference Allowance dB 1 0.5
C/No dB·Hz 41.8 56.62
LINK
Link C/(No+Io) dB·Hz 41.8 49.0
Required C/No dB-Hz 41.2 41.2
Margin dB 0.6 7.8

6

Table 6 - MSAT CW Carrier EOC Link Budget
FORWARD RETURN
PARAMETER UNITS (Hub to User) (User to
Hub)
Noise Bandwidth kHz 1 1
Boltzmann’s constant dBW/Hz·ºK -228.6 -228.6
UPLINK Clear Clear
Frequency GHz 13 1.64
Earth Station EIRP dBW 52.5 12
Body Shielding Loss dB x 0
Polarization Loss dB x -0.5
Free Space Loss dB -206.7 -188.8
Uplink Fade dB 0 0
Satellite Antenna Gain, EOC dBi 29 29
Received Carrier Power dBW -125.2 -148.3
Satellite G/T dB/ºK -1 5
Intersystem Interference
Allowance dB 0.5 1
C/No dB·Hz 72.9 55.3

C/Imo dB·Hz 52.0 54.0

Satellite C/(No+Io) dB·Hz 52.0 51.6
DOWNLINK
Frequency GHz 1.55 11
Satellite Active Gain dB 123.3 122
Satellite Antenna Gain, EOC dBi 29 29
Satellite EOC EIRP dBW 27.1 2.7
Free Space Loss dB -188.5 -205.2
Downlink Fade dB x 0
Earth Station G/T dB/ºK -16 36.5
Interference Allowance dB 1 0.5
C/No dB·Hz 50.2 62.1
LINK
Link C/(No+Io) dB·Hz 48.0 51.2
Required C/No dB-Hz 45.0 45.0
Margin dB 3.0 6.2

7

Table 8 – TELEMETRY (Faded)

PARAMETER UNITS SPOT OMNI
Frequency GHz 11.7 11.7
(Worst Case for Tx Ant)
Range km 39,347 39,347
Telemetry EIRP dBW 17.5 7.5
Range loss dB/m² -162.9 -162.9
Rain Fade dB -1.2 -1.2
Scintillation dB -0.2 -0.2
Co-polarization Inclined Orbit dB -0.1 -0.1
Mismatch
Tracking Gain dB -0.1 -0.1
Isotropic gain dB -42.6 -42.6
Clear Sky GW Antenna G/T dB/ºK 33.8 33.8
G/T Degradation Due to Fade dB -1.2 -1.2
Boltzmann’s Constant dBW/Hz·ºK 228.6 228.6
Received C/No dB·Hz 71.6 61.6
Received C/Io dB·Hz 71.6 61.6
Received C/(No+Io) dB·Hz 68.6 58.6

Data Rate kbps 4 1
TM Mod Index radians 0.9 0.9
Data Rate dB·Hz 36 30
Mod loss dB 3.9 3.9
Implementation loss dB 3 3
Theoretical Eb/No (BER 1E-6) dB·Hz 10.8 10.8
Required C/No dB·Hz 53.7 48
Faded Margin dB 14.9 10.6

COMMAND (Faded)

PARAMETER UNITS SPOT OMNI
Frequency (Worst Case) GHz 14.0 14.5
Range km 39.347 39.347
Uplink EIRP dBW 68 83
Range loss dB/m² -162.9 -162.9
Rain Fade dB -2 -2
Scintillation dB -0.2 -0.2
Co-polarization Inclined Orbit dB -0.1 -0.1
Mismatch
Tracking Gain dB -0.3 -0.3
PFD dBW/m² -97.5 -82.5
Required PFD dBW/m² -100 -85
Link Margin dB 2.5 2.5

9

Table 9 - MSAT QPSK V Carrier EOC Link Budget
FORWARD RETURN
PARAMETER UNITS (Hub to User) (User to Hub)
Noise Bandwidth kHz 4 4
Boltzmann’s constant dBW/Hz·ºK -228.6 -228.6
UPLINK Clear Clear
Frequency GHz 13 1.64
Earth Station EIRP dBW 52.5 12
Body Shielding Loss dB x 0
Polarization Loss dB x -0.5
Free Space Loss dB -206.7 -188.8
Uplink Fade dB 0 x
Satellite Antenna Gain, EOC dBi 27 32
Received Carrier Power dBW -127.2 -145.3
Satellite G/T dB/ºK -1 5
Intersystem Interference dB 0.5 1
Allowance
C/No dB·Hz 72.9 55.3

C/Imo dB·Hz 58 60
Frequency Reuse Allowance dB 1 1

Satellite C/(No+Io) dB·Hz 56.9 53.0

DOWNLINK
Frequency GHz 1.55 11
Satellite Active Gain dB 123.3 122
Satellite Antenna Gain, EOC dBi 32 27
Power Loss and Scan Loss dB 0 x
Satellite EOC EIRP dBW 28.1 3.7
Free Space Loss dB -188.5 -205.2
Downlink Fade dB x 0
Earth Station G/T dB/ºK -16 38
Interference Allowance dB 1 0.5
C/No dB·Hz 51.2 64.6
LINK
Link C/(No+Io) dB·Hz 50.2 52.7
Required C/No dB-Hz 45.0 45.0
Margin dB 5.2 7.7

10

MSAT-2 L-Band Beam Contours
Figure 1 - MSAT-2 Beam LE1 & LR1 East Beam
Showing beam peak (0 dB) and -2, -4, -6, -8, -10, -15, and -20dB contours
Peak Gain = 34 dBi RHCP

-15.00

-6.00
-4.00

-2.00
-20.00

0.00

-10.00
-8.00

-20.00
-20.00

-20.00

Figure 2 - MSAT-2 Beam LE2 & LR2 Central Beam
Showing beam peak (0 dB) and -2, -4, -6, -8, -10, -15, and -20 dB contours
Peak Gain = 34 dBi RHCP
-20.00

-10.00
-8.00 -15.00
-6.00
0.00
-2.00

-4.00

11

Figure 3 - MSAT-2 Beam LE3 & LR3 Mountain Beam
Showing beam peak (0 dB) and -2, -4, -6, -8, -10, -15, and -20 dB contours
Peak Gain = 34 dBi RHCP

-4.00-2.00
-10.00

-20.00
-20.00
0.00

-6.00
-8.00

-15.00

Figure 4 - MSAT-2 Beam LE4 & LR4 West Beam
Showing beam peak (0 dB) and -2, -4, -6, -8, -10, -15, and -20 dB contours
Peak Gain = 34 dBi RHCP
-15.00
-6.00
-8.00

-10.00
-20.00
-2.00

-20.00
0.00

-4.00

12

Figure 5 - MSAT-2 BeamLE5 & LR5 South Beam
Showing beam peak (0 dB) and -2, -4, -6, -8, -10, -15, and -20 dB contours
Peak Gain = 30 dBi RHCP

-2

-2.00
-8.00
0.00 0.00 0.00
-2.00 -2.00
-6.00 -4.00 -10.00
-15.00

-20.00

Figure 6 - MSAT-2 LE6 & LR6 Alaska-Hawaii Beam
Showing beam peak (0 dB) and -2, -4, -6, -8, -10, -15, and -20 dB contours
Peak Gain = 30 dBi RHCP

-15.00

-2.00
-4.00
-20.00

0.00

-6.00
-8.00
-10.00
-10.00
-10.00

-10.00
0.00
-4.00 -2.00
-6.00
-20.00
-8.00

13

Figure 7 - MSAT-2 Ku-Band Feederlink Beam KU1E & KU1R Beams
Peak Gain = 29.2 dBi -2, -4, -6, -8, -10, -15, and -20 dB Contours

-4.00

-2.00
0.00
-10.00
-8.00

-6.00

-4.00 -6.00
-8.00

-15.00-10.00
-20.00

14

Figure 8 - MSAT-2 TT&C OmniE & OmniR Beam

0.00

0.00

15

Technical Certification

I, Richard Evans, certify under penalty of perjury that:

I am the technically qualified person with overall responsibility for preparation of the
technical information contained in this application. I am familiar with the requirements
of Part 25 of the Commission’s rules, and the information contained in the application is
true and correct to the best of my knowledge and belief.

/s/
Richard Evans
Principal Engineer, SkyTerra LP

Dated: May 14, 2010

Document Created: 2010-05-14 15:56:05
Document Modified: 2010-05-14 15:56:05

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