Attachment Sched S doc LB1

This document pretains to SAT-AMD-20080114-00022 for Amended Filing on a Satellite Space Stations filing.

IBFS_SATAMD2008011400022_616671

EchoStar 17/24 GHz Link Budget Link Parameters Clear Sky Faded D/L Clear Sky Faded D/L (New York) (New York) (Los Angeles) (Los Angeles) Link Geometry: Tx E/S Range to Satellite (Cheyenne) (km) 38,245 38,245 38,245 38,245 Rx E/S Range to Satellite (km) 37,558 37,558 38,569 38,569 Uplink: Carrier Frequency (MHz) 25,000 25,000 25,000 25,000 Tx E/S Antenna Diameter (m) 12.0 12.0 12.0 12.0 Max. Tx E/S Power to Antenna (W) 4.7 4.7 4.7 4.7 Max. Tx E/S Power Density to Antenna (dBW/MHz) -6.5 -6.5 -6.5 -6.5 Tx E/S Antenna Gain (dB) 68.2 68.2 68.2 68.2 Tx E/S EIRP per Carrier (dBW) 74.9 74.9 74.9 74.9 Atmospheric and Other Losses (dB) 0.5 0.5 0.5 0.5 Free Space Loss (dB) 212.1 212.1 212.1 212.1 Satellite: G/T towards Tx E/S (dB/K) 10.3 10.3 10.3 10.3 EIRP per Carrier towards Rx E/S (dBW) 56.4 56.4 53.3 53.3 Downlink: Carrier Frequency (MHz) 17,500 17,500 17,500 17,500 Atmospheric and Other Losses (dB) 0.2 5.5 0.2 4.5 Free Space Loss (dB) 208.8 208.8 209.0 209.0 Rx E/S Antenna Diameter (m) 0.45 0.45 0.45 0.45 Rx E/S Antenna Gain (dB) 36.1 36.1 36.1 36.1 Pointing Error (dB) 0.5 0.5 0.5 0.5 Rx E/S G/T (dB/K) 13.1 10.1 13.1 10.4 System (LNA+Sky) Noise Temp. (K) 200 395 200 373 Total Link: Bandwidth (dB-Hz) 73.20 73.20 73.20 73.20 C/N - Thermal Uplink (dB) 28.0 28.0 28.0 28.0 C/N - Thermal Downlink (dB) 15.4 7.1 12.1 5.1 C/I - Aggregate uplink ASI (dB) 37.7 37.7 37.7 37.7 C/I - Aggregate downlink ASI (dB) 20.5 20.5 20.2 20.2 C/I - Other Link Degradations (dB) 20.0 20.0 20.0 20.0 C/(N+I) - Total, Actual (dB) 13.1 6.7 10.8 4.8 C/(N+I) - Total, Required (dB) 4.8 4.8 4.8 4.8 Excess Margin (dB) 8.3 1.9 6.0 0.0 Availability (%) N/A 99.90 N/A 99.96 Aggregate Interference Assessment: (C/N) - no ASI (dB) 13.9 6.9 11.3 4.9 Degradation due to aggregate ASI (dB) 0.9 0.2 0.5 0.1


Document Created: 2008-01-16 15:42:41
Document Modified: 2008-01-16 15:42:41
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