Attachment Schedule S document

This document pretains to SAT-LOA-20070105-00006 for Application to Launch and Operate on a Satellite Space Stations filing.

IBFS_SATLOA2007010500006_543694

EchoStar 17 GHz RBW DBS Link Budget

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


Link Geometry:
   Tx E/S Range to Satellite (Cheyenne)   (km)      38,053      38,053        38,053
   Rx E/S Range to Satellite              (km)      38,920      38,920        37,141
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)      55.6        55.6          52.8
Downlink:
   Carrier Frequency                      (MHz)     17,500      17,500        17,500
   Atmospheric and Other Losses           (dB)        0.3         4.8           1.5
   Free Space Loss                        (dB)       209.1       209.1        208.7
   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         10.4         12.0
   System (LNA+Sky) Noise Temp.           (K)         200         369          258
Total Link:
   Carrier Noise Bandwidth                (kHz)     24,000      24,000        24,000
   (C/N) - Thermal Uplink                 (dB)       38.1         38.1         38.1
   (C/N) - Thermal Downlink               (dB)       14.1         6.9           9.4
   (C/I) - Other Link Degradations        (dB)       20.0         20.0         20.0
   (C/N) - Total Actual                   (dB)       13.1         6.7           9.0
   (C/N) - Total Required                 (dB)        4.8         4.8           4.8
   Excess Margin                          (dB)        8.3         1.9           4.2
   Availability                           (%)        N/A         99.80         99.80



Document Created: 2007-01-12 09:23:59
Document Modified: 2007-01-12 09:23:59

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