Attachment Schedule S DOC 5

This document pretains to SAT-AMD-20110408-00070 for Amended Filing on a Satellite Space Stations filing.

IBFS_SATAMD2011040800070_891612

EchoStar 17/24 GHz Link Budget

              Link Parameters                           Clear Sky     Faded D/L     Clear Sky      Faded D/L
                                                      (Los Angeles) (Los Angeles) (Mexico City)   (Mexico CIty)


Link Geometry:
   Tx E/S Range to Satellite (Cheyenne)   (km)           38,983        38,983        38,983          38,983
   Rx E/S Range to Satellite              (km)           39,610        39,610        37,592          37,592
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)               5.0          5.0           5.0             5.0
   Max. Tx E/S Power Density to Antenna   (dBW/MHz)        -6.8         -6.8          -6.8             -6.8
   Tx E/S Antenna Gain                    (dB)            68.2          68.2          68.2            68.2
   Tx E/S EIRP per Carrier                (dBW)           75.2          75.2          75.2            75.2
   Atmospheric and Other Losses           (dB)              0.5          0.5           0.5             0.5
   Free Space Loss                        (dB)            212.2        212.2         212.2            212.2
Satellite:
   G/T towards Tx E/S                     (dB/K)          17.2          17.2           17.2           17.2
   EIRP per Carrier towards Rx E/S        (dBW)           53.6          53.6           53.3           53.3
Downlink:
   Carrier Frequency                      (MHz)          17,500        17,500        17,500          17,500
   Atmospheric and Other Losses           (dB)             0.4          3.4            0.2             3.0
   Free Space Loss                        (dB)            209.3        209.3         208.8            208.8
   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          10.8          13.1            10.9
   System (LNA+Sky) Noise Temperature     (K)              200          338           200              330
Total Link:
   Bandwidth                              (dB-Hz)         73.8           73.8          73.8          73.8
   C/N - Thermal Uplink                   (dB)            34.4           34.4          34.4          34.4
   C/N - Thermal Downlink                 (dB)            11.3           6.1           11.7           6.8
   C/I - Aggregate uplink ASI             (dB)            37.3           37.3          37.3          37.3
   C/I - Aggregate downlink ASI           (dB)            19.7           19.7          13.8          13.8
   C/I - Other Link Degradations          (dB)            22.0           22.0          22.0          22.0
   C/(N+I) - Total, Actual                (dB)            10.4           5.8            9.4           5.9
   C/(N+I) - Total, Required              (dB)            5.8            5.8            5.8           5.8
   Excess Margin                          (dB)            4.6            0.0            3.6           0.1
   Availability                           (%)             N/A           99.76          N/A           99.87
Aggregate Interference Assessment:
   (C/N) - no ASI                         (dB)            11.0           6.0           11.3            6.6
   Degradation due to aggregate ASI       (dB)            0.6            0.2            1.9            0.8



Document Created: 2011-06-02 10:58:53
Document Modified: 2011-06-02 10:58:53

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