Attachment Schedule S document

This document pretains to SAT-MOD-20060811-00087 for Modification on a Satellite Space Stations filing.

IBFS_SATMOD2006081100087_518958

EXHIBIT 4A: Galaxy 4R C-Band Link Budgets UPLINK BEAM INFORMATION Uplink Beam Name Conus Conus Conus Conus Conus Uplink Frequency (MHz) 6175 6175 6175 6175 6175 Uplink Beam Polarization Vertical/Horizontal Vertical/Horizontal Vertical/Horizontal Vertical/Horizontal Vertical/Horizontal Uplink Relative Contour Level (dB) -4 -4 -4 -4 -4 Uplink Contour G/T (dB/K) -4.0 -4.0 -4.0 -4.0 -4.0 Uplink SFD (dBW/m2) -88.0 -88.0 -84.0 -84.0 -84.0 Uplink Input Backoff (dB) 0 0 5 5 5 DOWNLINK BEAM INFORMATION Downlink Beam Name Conus Conus Conus Conus Conus Downlink Frequency (MHz) 3950 3950 3950 3950 3950 Downlink Beam Polarization Horizontal/Vertical Horizontal/Vertical Horizontal/Vertical Horizontal/Vertical Horizontal/Vertical Downlink Relative Contour Level (dB) -4 -4 -4 -4 -4 Downlink Contour EIRP (dBW) 38.1 38.1 38.1 38.1 38.1 Downlink Output Backoff (dB) 0 0 3.5 3.5 3.5 ADJACENT SATELLITE 1 Satellite 1 Orbital Location 74.85 WL 74.85 WL 74.85 WL 74.85 WL 74.85 WL Uplink Power Density (dBW/Hz) -38.7 -38.7 -38.7 -38.7 -38.7 Uplink Polarization Advantage (dB) 0 0 0 0 0 Downlink EIRP Density (dBW/Hz) -32.0 -32.0 -32.0 -32.0 -32.0 Downlink Polarization Advantage (dB) 0 0 0 0 0 ADJACENT SATELLITE 2 Satellite 2 Orbital Location 78.85 WL 78.85 WL 78.85 WL 78.85 WL 78.85 WL Uplink Power Density (dBW/Hz) -38.7 -38.7 -38.7 -38.7 -38.7 Uplink Polarization Advantage (dB) 0 0 0 0 0 Downlink EIRP Density (dBW/Hz) -32.0 -32.0 -32.0 -32.0 -32.0 Downlink Polarization Advantage (dB) 0 0 0 0 0 CARRIER INFORMATION Carrier ID 1 2 3 4 5 Information Rate (kbps) N/A 36863 6000 1544 64 Carrier Modulation TV/FM QPSK QPSK QPSK QPSK Peak to Peak Bandwidth of EDS (MHz) 4 n/a n/a n/a n/a Code Rate N/A 3/4 - RS 3/4 - RS 3/4-RS 1/2-RS Occupied Bandwidth (kHz) 36000 30133 4154 1212.8 75.4 Allocated Bandwidth (kHz) 36000 36000 6875 1550 100 Minimum C/N, Rain (dB) 10.0 6.1 6.7 5.7 3.0 UPLINK EARTH STATION Earth Station Diameter (meters) 7.0 7.0 7.0 7.0 7.0 Earth Station Gain (dBi) 51.0 51.0 51.0 51.0 51.0 Earth Station Elevation Angle 20 20 20 20 20 DOWNLINK EARTH STATION Earth Station Diameter (meters) 8.1 3.5 3.5 3.5 3.5 Earth Station Gain (dBi) 49.3 41.1 41.1 41.1 41.1 Earth Station G/T, Clear Sky (dB/K) 28.4 21.0 21.0 21.0 21.0 Earth Station Elevation Angle 20 20 20 20 20 UPLINK PERFORMANCE Uplink Earth Station EIRP (dBW) 74.9 74.9 68.4 61.9 47.2 Uplink Path Loss, Clear Sky (dB) -200.2 -200.2 -200.2 -200.2 -200.2 Satellite G/T (dB/K) -4.0 -4.0 -4.0 -4.0 -4.0 Boltzman Constant (dBW/K-Hz) 228.6 228.6 228.6 228.6 228.6 Carrier Noise Bandwidth (dB-Hz) -75.6 -74.8 -66.2 -60.8 -48.8 Uplink C/N (dB) 23.7 24.5 26.6 25.5 22.8 DOWNLINK PERFORMANCE Downlink EIRP per Carrier (dBW) 38.1 38.1 29.1 22.6 7.9 Antenna Pointing Error (dB) -0.5 -0.5 -0.5 -0.5 -0.5 Downlink Path Loss, Clear Sky (dB) -196.3 -196.3 -196.3 -196.3 -196.3 Earth Station G/T (dB/K) 28.4 -21.0 21.0 21.0 21.0 Boltzman Constant (dBW/K-Hz) 228.6 228.6 228.6 228.6 228.6 Carrier Noise Bandwidth (dB-Hz) -75.6 -74.8 -66.2 -60.8 -48.8 Downlink C/N (dB) 22.7 16.1 15.7 14.5 11.9 COMPOSITE LINK PERFORMANCE C/N Uplink (dB) 23.7 24.5 26.6 25.5 22.8 C/N Downlink (dB) 22.7 16.1 15.7 14.5 11.9 C/I Intermodulation (dB) n/a n/a 21.1 19.9 17.3 C/I Uplink Co-Channel (dB)* 24.0 24.0 25.7 25.7 22.9 C/I Downlink Co-Channel (dB)* 24.0 24.0 25.7 25.7 22.9 C/I Uplink Adjacent Satellite 1 (dB) 16.0 16.8 18.9 17.8 15.1 C/I Downlink Adjacent Satellite 1 (dB) 23.0 16.4 16.0 14.9 12.2 C/I Uplink Adjacent Satellite 2 (dB) 16.0 16.8 18.9 17.8 15.1 C/I Downlink Adjacent Satellite 2 (dB) 21.6 11.6 11.2 10.1 7.5 C/(N+I) Composite (dB) 11.0 7.7 7.7 6.7 4.0 Required System Margin (dB) -1.0 -1.0 -1.0 -1.0 -1.0 Net C/(N+I) Composite (dB) 10.0 6.7 6.7 5.7 3.0 Minimum Required C/N (dB) -10.0 -6.1 -6.7 -5.7 -3.0 Excess Link Margin (dB) 0.0 0.6 0.0 0.0 0.0 Number of Carriers 1.0 1.0 3.6 15.8 360.0 CARRIER DENSITY LEVELS Uplink Power Density (dBW/Hz) -42.1 -50.9 -48.8 -49.9 -52.6 Downlink EIRP Density At Beam Peak -23.9 -32.7 -33.1 -34.2 -36.9 *The C/I level is adjusted depending on the signal level and transponder mode of operation


Document Created: 2006-08-14 12:03:52
Document Modified: 2006-08-14 12:03:52
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