Attachment Sched S doc LB2

This document pretains to SAT-AMD-20080114-00021 for Amended Filing on a Satellite Space Stations filing.

IBFS_SATAMD2008011400021_616641

EchoStar 17/24 GHz Link Budget Link Parameters Clear Sky Faded D/L Clear Sky Faded D/L (New York) (New York) (Miami) (Miami) Link Geometry: Tx E/S Range to Satellite (Cheyenne) (km) 38,983 38,983 38,983 38,983 Rx E/S Range to Satellite (km) 37,670 37,670 36,853 36,853 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) -6.9 -6.9 -6.9 -6.9 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) 212.2 212.2 212.2 212.2 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) 56.5 56.5 58.3 58.3 Downlink: Carrier Frequency (MHz) 17,500 17,500 17,500 17,500 Atmospheric and Other Losses (dB) 0.2 3.1 0.1 6.2 Free Space Loss (dB) 208.8 208.8 208.6 208.6 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 10.9 13.1 10.0 System (LNA+Sky) Noise Temperature (K) 200 335 200 408 Total Link: Bandwidth (dB-Hz) 73.60 73.60 73.60 73.60 C/N - Thermal Uplink (dB) 27.4 27.4 27.4 27.4 C/N - Thermal Downlink (dB) 15.1 9.9 17.2 8.0 C/I - Aggregate uplink ASI (dB) 37.2 37.2 37.2 37.2 C/I - Aggregate downlink ASI (dB) 20.2 20.2 25.2 25.2 C/I - Other Link Degradations (dB) 20.0 20.0 20.0 20.0 C/(N+I) - Total, Actual (dB) 12.8 9.1 14.7 7.6 C/(N+I) - Total, Required (dB) 7.5 7.5 7.5 7.5 Excess Margin (dB) 5.3 1.6 7.2 0.1 Availability (%) N/A 99.70 N/A 99.70 Aggregate Interference Assessment: (C/N) - no ASI (dB) 13.7 9.5 15.1 7.7 Degradation due to aggregate ASI (dB) 0.9 0.4 0.4 0.1


Document Created: 2008-01-16 15:38:41
Document Modified: 2008-01-16 15:38:41
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