Attachment Schedule S document

This document pretains to SAT-LOA-20061222-00157 for Application to Launch and Operate on a Satellite Space Stations filing.

IBFS_SATLOA2006122200157_540785

EchoStar 17 GHz RBW DBS Link Budget

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


Link Geometry:
     Tx E/S Range to Satellite (Cheyenne)   (km)       39,005       39,005      39,005
     Rx E/S Range to Satellite              (km)       37,675       37,675      39,630
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)        212.2        212.2       212.2
Satellite:
     G/T towards Tx E/S                     (dB/K)      10.3         10.3        10.3
     EIRP per Carrier towards Rx E/S        (dBW)       56.8         56.8        57.6
Downlink:
     Carrier Frequency                      (MHz)      17,500       17,500      17,500
     Atmospheric and Other Losses           (dB)         0.3          3.8         5.5
     Free Space Loss                        (dB)        208.8        208.8       209.3
     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       10.3
     System (LNA+Sky) Noise Temp.           (K)          200          341         380
Total Link:
     Carrier Noise Bandwidth                (kHz)      24,000       24,000      24,000
     (C/N) - Thermal Uplink                 (dB)        37.8         37.8        37.8
     (C/N) - Thermal Downlink               (dB)        15.6          9.8         7.9
     (C/I) - Other Link Degradations        (dB)        20.0         20.0        20.0
     (C/N) - Total Actual                   (dB)        14.2          9.4         7.7
     (C/N) - Total Required                 (dB)         4.8          4.8         4.8
     Excess Margin                          (dB)         9.4          4.6         2.9
     Availability                           (%)         N/A          99.80       99.80



Document Created: 2006-12-28 11:48:33
Document Modified: 2006-12-28 11:48:33

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