Attachment Schedule S DOC 6

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

IBFS_SATAMD2011040800070_891609

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)        -6.6          -6.6          -6.6            -6.6
   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           2.3           0.2             1.8
   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          11.4          13.1            11.6
   System (LNA+Sky) Noise Temperature     (K)              200           298           200             285
Total Link:
   Bandwidth                              (dB-Hz)         73.6           73.6          73.6           73.6
   C/N - Thermal Uplink                   (dB)            34.6           34.6          34.6           34.6
   C/N - Thermal Downlink                 (dB)            11.5            7.9          11.9            8.8
   C/I - Aggregate uplink ASI             (dB)            37.5           37.5          37.5           37.5
   C/I - Aggregate downlink ASI           (dB)            19.9           19.9          14.0           14.0
   C/I - Other Link Degradations          (dB)            22.0           22.0          22.0           22.0
   C/(N+I) - Total, Actual                (dB)            10.6            7.5           9.5            7.5
   C/(N+I) - Total, Required              (dB)             7.5            7.5           7.5            7.5
   Excess Margin                          (dB)             3.1            0.0           2.0            0.0
   Availability                           (%)             N/A           99.55          N/A           99.67
Aggregate Interference Assessment:
   (C/N) - no ASI                         (dB)            11.1           7.7           11.5            8.5
   Degradation due to aggregate ASI       (dB)             0.6           0.3            1.9            1.1



Document Created: 2011-06-02 10:58:05
Document Modified: 2011-06-02 10:58:05

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