Attachment Sched S doc LB3

This document pretains to SAT-AMD-20080213-00044 for Amended Filing on a Satellite Space Stations filing.

IBFS_SATAMD2008021300044_622688

EchoStar 17/24 GHz Link Budget Link Parameters Clear Sky Faded D/L (Mexico City) (Mexico City) Link Geometry: Tx E/S Range to Satellite (Cheyenne) (km) 38,121 38,121 Rx E/S Range to Satellite (km) 36,663 36,663 Uplink: Carrier Frequency (MHz) 25,000 25,000 Tx E/S Antenna Diameter (m) 12.0 12.0 Max. Tx E/S Power to Antenna (W) 4.7 4.7 Max. Tx E/S Power Density to Antenna (dBW/MHz) -6.5 -6.5 Tx E/S Antenna Gain (dB) 68.2 68.2 Tx E/S EIRP per Carrier (dBW) 74.9 74.9 Atmospheric and Other Losses (dB) 0.5 0.5 Free Space Loss (dB) 212.0 212.0 Satellite: G/T towards Tx E/S (dB/K) 10.3 10.3 EIRP per Carrier towards Rx E/S (dBW) 55.9 55.9 Downlink: Carrier Frequency (MHz) 17,500 17,500 Atmospheric and Other Losses (dB) 0.1 5.9 Free Space Loss (dB) 208.6 208.6 Rx E/S Antenna Diameter (m) 0.45 0.45 Rx E/S Antenna Gain (dB) 36.1 36.1 Pointing Error (dB) 0.5 0.5 Rx E/S G/T (dB/K) 13.1 10.1 System (LNA+Sky) Noise Temp. (K) 200 403 Total Link: Bandwidth (dB-Hz) 73.20 73.20 C/N - Thermal Uplink (dB) 28.0 28.0 C/N - Thermal Downlink (dB) 15.2 6.4 C/I - Aggregate uplink ASI (dB) 37.8 37.8 C/I - Aggregate downlink ASI (dB) 17.3 17.3 C/I - Other Link Degradations (dB) 20.0 20.0 C/(N+I) - Total, Actual (dB) 12.2 5.8 C/(N+I) - Total, Required (dB) 4.8 4.8 Excess Margin (dB) 7.4 1.0 Availability (%) N/A 99.98 Aggregate Interference Assessment: (C/N) - no ASI (dB) 13.8 6.2 Degradation due to aggregate ASI (dB) 1.6 0.3


Document Created: 2008-02-20 14:24:48
Document Modified: 2008-02-20 14:24:48
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