Attachment Sched S doc LB4

This document pretains to SAT-AMD-20080213-00043 for Amended Filing on a Satellite Space Stations filing.

IBFS_SATAMD2008021300043_622613

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) 37,590 37,590 Rx E/S Range to Satellite (km) 36,271 36,271 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) -6.9 -6.9 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) 211.9 211.9 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 3.8 Free Space Loss (dB) 208.5 208.5 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 10.6 System (LNA+Sky) Noise Temperature (K) 200 358 Total Link: Bandwidth (dB-Hz) 73.60 73.60 C/N - Thermal Uplink (dB) 27.8 27.8 C/N - Thermal Downlink (dB) 14.9 8.7 C/I - Aggregate uplink ASI (dB) 36.6 36.6 C/I - Aggregate downlink ASI (dB) 16.1 16.1 C/I - Other Link Degradations (dB) 20.0 20.0 C/(N+I) - Total, Actual (dB) 11.6 7.6 C/(N+I) - Total, Required (dB) 7.5 7.5 Excess Margin (dB) 4.1 0.1 Availability (%) N/A 99.95 Aggregate Interference Assessment: (C/N) - no ASI (dB) 13.6 8.3 Degradation due to aggregate ASI (dB) 1.9 0.7


Document Created: 2008-02-20 10:02:36
Document Modified: 2008-02-20 10:02:36
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