Attachment Schedule S document

This document pretains to SAT-LOA-20070105-00003 for Application to Launch and Operate on a Satellite Space Stations filing.

IBFS_SATLOA2007010500003_543882

EchoStar 17 GHz RBW DBS Link Budget

               Link Parameters                      Clear Sky    Faded D/L     Faded D/L
                                                   (New York)   (New York)   (Los Angeles)


Link Geometry:
   Tx E/S Range to Satellite (Cheyenne)   (km)       38,200       38,200        38,200
   Rx E/S Range to Satellite              (km)       37,563       37,563        38,489
Uplink (per carrier):
   Carrier Frequency                      (MHz)      25,000       25,000        25,000
   Tx E/S Antenna Diameter                (m)         12.0          12.0         12.0
   Tx E/S Power to Antenna                (W)          53.7         53.7         53.7
   Tx E/S Antenna Gain                    (dB)         68.2         68.2         68.2
   Tx E/S EIRP per Carrier                (dBW)       85.5          85.5         85.5
   Atmospheric and Other Losses           (dB)         0.5          0.5           0.5
   Free Space Loss                        (dB)        212.0        212.0        212.0
Satellite:
   G/T towards Tx E/S                     (dB/K)      10.3         10.3          10.3
   EIRP per Carrier towards Rx E/S        (dBW)       58.1         58.1          53.6
Downlink:
   Carrier Frequency                      (MHz)      17,500       17,500        17,500
   Atmospheric and Other Losses           (dB)         0.3          3.8           1.9
   Free Space Loss                        (dB)        208.8        208.8        209.0
   Rx E/S Antenna Diameter                (m)         0.45         0.45          0.45
   Rx E/S Antenna Gain                    (dB)        36.1          36.1         36.1
   Rx E/S G/T                             (dB/K)      13.1          10.8         11.7
   System (LNA+Sky) Noise Temp.           (K)          200          341          279
Total Link:
   Carrier Noise Bandwidth                (kHz)      24,000       24,000        24,000
   (C/N) - Thermal Uplink                 (dB)        38.0          38.0         38.0
   (C/N) - Thermal Downlink               (dB)        16.9         11.1           9.1
   (C/I) - Other Link Degradations        (dB)        20.0          20.0         20.0
   (C/N) - Total Actual                   (dB)        15.1         10.5           8.8
   (C/N) - Total Required                 (dB)         4.8          4.8           4.8
   Excess Margin                          (dB)        10.3          5.7           4.0
   Availability                           (%)         N/A          99.80         99.80



Document Created: 2007-01-12 16:22:31
Document Modified: 2007-01-12 16:22:31

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