Attachment Schedule S document

This document pretains to SAT-AMD-20080114-00019 for Amended Filing on a Satellite Space Stations filing.

IBFS_SATAMD2008011400019_616482

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)          37,621       37,621        37,621        37,621
   Rx E/S Range to Satellite              (km)          38,600       38,600        37,096        37,096
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)           211.9        211.9         211.9         211.9
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)          54.9         54.9          53.3          53.3
Downlink:
   Carrier Frequency                      (MHz)         17,500       17,500        17,500        17,500
   Atmospheric and Other Losses           (dB)            0.2          4.6           0.2           3.4
   Free Space Loss                        (dB)           209.0        209.0         208.7         208.7
   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         10.3          13.1          10.8
   System (LNA+Sky) Noise Temperature     (K)             200          377           200           343
Total Link:
   Bandwidth                              (dB-Hz)       73.20        73.20          73.20         73.20
   C/N - Thermal Uplink                   (dB)           28.2         28.2          28.2           28.2
   C/N - Thermal Downlink                 (dB)          13.7          6.5           12.4           6.9
   C/I - Aggregate uplink ASI             (dB)          37.9         37.9           38.1           37.9
   C/I - Aggregate downlink ASI           (dB)          18.8         18.8           20.4           20.4
   C/I - Other Link Degradations          (dB)          20.0         20.0           20.0          20.0
   C/(N+I) - Total, Actual                (dB)          11.7          6.1           11.1           6.4
   C/(N+I) - Total, Required              (dB)           4.8          4.8            4.8           4.8
   Excess Margin                          (dB)            6.9         1.3            6.3            1.6
   Availability                           (%)            N/A         99.80           N/A          99.96
Aggregate Interference Assessment:
   (C/N) - no ASI                         (dB)           12.6         6.3           11.6           6.6
   Degradation due to aggregate ASI       (dB)            0.9         0.2            0.6           0.2



Document Created: 2008-01-16 15:33:11
Document Modified: 2008-01-16 15:33:11

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