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_543883

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)       55.5         55.5          51.8
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)        14.3          8.5           7.3
     (C/I) - Other Link Degradations        (dB)        20.0         20.0          20.0
     (C/N) - Total Actual                   (dB)        13.2          8.2           7.1
     (C/N) - Total Required                 (dB)         4.8          4.8           4.8
     Excess Margin                          (dB)         8.4          3.4           2.3
     Availability                           (%)         N/A          99.80         99.80



Document Created: 2007-01-12 16:23:01
Document Modified: 2007-01-12 16:23:01

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