Attachment Schedule S document

This document pretains to SAT-MOD-20080630-00133 for Modification on a Satellite Space Stations filing.

IBFS_SATMOD2008063000133_650898

EXHIBIT 4: GALAXY 12 LINK BUDGETS UPLINK BEAM INFORMATION Uplink Beam Name CONUS CONUS CONUS CONUS Uplink Frequency (MHz) 5925 - 6425 5925 - 6425 5925 - 6425 5925 - 6425 Uplink Beam Polarization Vertical / Horizontal Vertical / Horizontal Vertical / Horizontal Vertical / Horizontal Uplink Relative Contour Level (dB) -4 -4 -4 -4 Uplink Contour G/T (dB/K) -0.5 -0.5 -0.5 -0.5 Uplink SFD (dBW/m2) -89.5 -89.5 -93.5 -93.5 DOWNLINK BEAM INFORMATION Downlink Beam Name CONUS CONUS CONUS CONUS Downlink Frequency (MHz) 3700 - 4200 3700 - 4200 3700 - 4200 3700 - 4200 Downlink Beam Polarization Horizontal / Vertical Horizontal / Vertical Horizontal / Vertical Horizontal / Vertical Downlink Relative Contour Level (dB) -4 -4 -4 -4 Downlink Contour EIRP (dBW) 39.4 40.2 40.2 40.2 ADJACENT SATELLITE 1 Satellite 1 Orbital Location 125 WL 125 WL 125 WL 125 WL Uplink Power Density (dBW/Hz) -47.5 -47.5 -47.5 -47.5 Uplink Polarization Advantage (dB) 0 0 0 0 Downlink EIRP Density (dBW/Hz) -31.4 -31.4 -31.4 -31.4 Downlink Polarization Advantage (dB) 0 0 0 0 ADJACENT SATELLITE 2 Satellite 2 Orbital Location 121 WL 121 WL 121 WL 121 WL Uplink Power Density (dBW/Hz) -44.2 -44.2 -44.2 -44.2 Uplink Polarization Advantage (dB) 0 0 0 0 Downlink EIRP Density (dBW/Hz) -32.5 -32.5 -32.5 -32.5 Downlink Polarization Advantage (dB) 0 0 0 0 CARRIER INFORMATION Carrier ID 36M0F3F 30M1G7W 6M77G7W 75K4G7W Information Rate (kbps) n/a 32767 6000 64 Carrier Modulation TV/FM QPSK QPSK QPSK Peak to Peak Bandwidth of EDS (MHz) 4 n/a n/a n/a Code Rate n/a 1/2xRS 1/2XRS 1/2xRS Occupied Bandwidth (kHz) 36000 30133 6771.1 75.4 Allocated Bandwidth (kHz) 36000 36000 10300 100 Minimum C/N, Rain (dB) 10 5.1 3.9 3.0 UPLINK EARTH STATION Earth Station Diameter (meters) 6.1 6.1 6.1 6.1 Earth Station Gain (dBi) 49.4 49.4 49.4 49.4 Earth Station Elevation Angle 20 20 20 20 DOWNLINK EARTH STATION Earth Station Diameter (meters) 4.5 3.0 3.0 3.0 Earth Station Gain (dBi) 43.9 39.7 39.7 39.7 Earth Station G/T, Clear Sky (dB/K) 23.6 19.2 19.2 19.2 Earth Station Elevation Angle 20 20 20 20 UPLINK PERFORMANCE Uplink Earth Station EIRP (dBW) 73.4 73.4 60.7 40.3 Uplink Path Loss, Clear Sky (dB) -200.2 -200.2 -200.2 -200.2 Satellite G/T (dB/K) -0.5 -0.5 -0.5 -0.5 Boltzman Constant (dBW/K-Hz) 228.6 228.6 228.6 228.6 Carrier Noise Bandwidth (dB-Hz) -75.6 -74.8 -68.3 -48.8 Uplink C/N (dB) 25.7 26.5 20.3 19.4 DOWNLINK PERFORMANCE Downlink EIRP per Carrier (dBW) 39.4 40.2 33.0 12.6 Antenna Pointing Error (dB) -0.5 -0.5 -0.5 -0.5 Downlink Path Loss, Clear Sky (dB) -196.3 -196.3 -196.3 -196.3 Earth Station G/T, Clear Sky (dB/K) 23.6 19.2 19.2 19.2 Boltzman Constant (dBW/K-Hz) 228.6 228.6 228.6 228.6 Carrier Noise Bandwidth (dB-Hz) -75.6 -74.8 -68.3 -48.8 Downlink C/N (dB) 19.2 16.4 15.7 14.8 COMPOSITE LINK PERFORMANCE C/N Uplink (dB) 25.7 26.5 20.3 19.4 C/N Downlink (dB) 19.2 16.4 15.7 14.8 C/I Intermodulation (dB) n/a n/a 20.8 19.9 C/I Uplink Co-Channel (dB)* 24.0 24.0 25.8 25.5 C/I Downlink Co-Channel (dB)* 24.0 24.0 25.8 25.5 C/I Uplink Adjacent Satellite 1 (dB) 23.9 24.7 18.5 17.6 C/I Downlink Adjacent Satellite 1 (dB) 19.3 17.2 16.5 15.7 C/I Uplink Adjacent Satellite 2 (dB) 19.5 20.2 14.0 13.2 C/I Downlink Adjacent Satellite 2 (dB) 16.7 7.7 7.0 6.1 C/(N+I) Composite (dB) 11.5 6.3 4.9 4.0 Required System Margin (dB) -1.0 -1.0 -1.0 -1.0 Net C/(N+I) Composite (dB) 10.5 5.3 3.9 3.0 Minimum Required C/N (dB) -10.0 -5.1 -3.9 -3.0 Excess Link Margin (dB) 0.5 0.2 0.0 0.0 Carrier Density Levels Number of Carriers 1.0 1.0 2.3 256.0 Uplink Power Density (dBW/Hz) -42.0 -50.8 -57.0 -57.9 Downlink EIRP Density At Beam Peak (dBW/Hz) -22.6 -30.6 -31.3 -32.2 * Note: The C/I level is adjusted depending on the signal level and transponder mode of operation.


Document Created: 2008-07-01 13:09:55
Document Modified: 2008-07-01 13:09:55
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