Attachment Schedule S DOC 8

This document pretains to SAT-MOD-20110504-00085 for Modification on a Satellite Space Stations filing.

IBFS_SATMOD2011050400085_891583

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)           38,110        38,110        38,110          38,110
   Rx E/S Range to Satellite              (km)           38,362        38,362        36,627          36,627
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)              0.7          0.7           0.7             0.7
   Free Space Loss                        (dB)            212.0        212.0         212.0            212.0
Satellite:
   G/T towards Tx E/S                     (dB/K)          17.3          17.3           17.3           17.3
   EIRP per Carrier towards Rx E/S        (dBW)           52.5          52.5           52.3           52.3
Downlink:
   Carrier Frequency                      (MHz)          17,500        17,500        17,500          17,500
   Atmospheric and Other Losses           (dB)             0.3          2.7            0.2             2.4
   Free Space Loss                        (dB)            209.0        209.0         208.6            208.6
   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          11.1          13.1            11.2
   System (LNA+Sky) Noise Temperature     (K)              200          319           200              311
Total Link:
   Bandwidth                              (dB-Hz)         73.8           73.8          73.8          73.8
   C/N - Thermal Uplink                   (dB)            34.5           34.5          34.5          34.5
   C/N - Thermal Downlink                 (dB)            10.6           6.2           10.9           6.8
   C/I - Aggregate uplink ASI             (dB)            37.3           37.3          37.3          37.3
   C/I - Aggregate downlink ASI           (dB)            18.9           18.9          13.1          13.1
   C/I - Other Link Degradations          (dB)            22.0           22.0          22.0          22.0
   C/(N+I) - Total, Actual                (dB)            9.7            5.9            8.6           5.8
   C/(N+I) - Total, Required              (dB)            5.8            5.8            5.8           5.8
   Excess Margin                          (dB)            3.9            0.1            2.8           0.0
   Availability                           (%)             N/A           99.89          N/A           99.85
Aggregate Interference Assessment:
   (C/N) - no ASI                         (dB)            10.3           6.1           10.6            6.7
   Degradation due to aggregate ASI       (dB)            0.6            0.2            1.9            0.9



Document Created: 2011-06-02 10:50:08
Document Modified: 2011-06-02 10:50:08

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