Attachment Schedule S DOC 10

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

IBFS_SATMOD2011050400085_891579

EchoStar 17/24 GHz Link Budget

              Link Parameters                         Clear Sky   Faded D/L    Clear Sky    Faded D/L   Clear Sky   Faded D/L     Clear Sky     Faded D/L
                                                        (L.A.)      (L.A.)    (New York)   (New York)    (Miami)     (Miami)    (Puerto Rico) (Puerto Rico)


Link Geometry:
   Tx E/S Range to Satellite              (km)         37,944      37,944       37,891       37,891      37,098      37,098        37,944        37,944
   Rx E/S Range to Satellite              (km)         38,362      38,362       37,577       37,577      36,528      36,528        36,319        36,319
Uplink:
   Carrier Frequency                      (MHz)        25,000      25,000       25,000       25,000      25,000      25,000        25,000        25,000
   Tx E/S Antenna Diameter                (m)            12.0        12.0         12.0         12.0        12.0        12.0         12.0           12.0
   Max. Tx E/S Power to Antenna           (W)            15.0        15.0         15.0         15.0        15.0        15.0         15.0           15.0
   Max. Tx E/S Power Density to Antenna   (dBW/MHz)      -7.1        -7.1         -7.1         -7.1        -7.1        -7.1         -7.1           -7.1
   Tx E/S Antenna Gain                    (dB)           68.2        68.2         68.2         68.2        68.2        68.2         68.2           68.2
   Tx E/S EIRP per Carrier                (dBW)          79.9        79.9         79.9         79.9        79.9        79.9         79.9           79.9
   Atmospheric and Other Losses           (dB)            0.5        0.5           0.7          0.7         0.5         0.5          0.7            0.5
   Free Space Loss                        (dB)          212.0       212.0        212.0        212.0       211.8       211.8        212.0          212.0
Satellite:
   G/T towards Tx E/S                     (dB/K)        18.6        18.6         15.0         15.0        18.7        18.7          18.6          18.6
   EIRP per Carrier towards Rx E/S        (dBW)         59.6        59.6         62.5         62.5        65.5        65.5          64.8          64.8
Downlink:
   Carrier Frequency                      (MHz)        17,500      17,500       17,500       17,500      17,500      17,500        17,500        17,500
   Atmospheric and Other Losses           (dB)            0.3        4.0           0.2          6.7         0.2         9.4          0.2            9.0
   Free Space Loss                        (dB)          209.0       209.0        208.8        208.8       208.6       208.6        208.5          208.5
   Rx E/S Antenna Diameter                (m)            0.45        0.45         0.45         0.45        0.45        0.45         0.45           0.45
   Rx E/S Antenna Gain                    (dB)           36.1        36.1         36.1         36.1        36.1        36.1         36.1           36.1
   Pointing Error                         (dB)            0.5        0.5           0.5          0.5         0.5         0.5          0.5            0.5
   Rx E/S G/T                             (dB/K)         13.1        10.6         13.1          9.9        13.1         9.6         13.1            9.7
   System (LNA+Sky) Noise Temperature     (K)            200         359          200          414         200         444          200            441
Total Link:
   Bandwidth                              (dB-Hz)       78.9         78.9        78.9         78.9        78.9         78.9         78.9           78.9
   C/N - Thermal Uplink                   (dB)          35.7         35.7        32.0         32.0        36.0         36.0         35.5           35.7
   C/N - Thermal Downlink                 (dB)          12.6         6.4         15.8          6.2        19.0          6.4         18.4            6.1
   C/I - Aggregate uplink ASI             (dB)          37.2         37.2        37.0         37.0        37.4         37.4         37.0           37.2
   C/I - Aggregate downlink ASI           (dB)          20.9         20.9        20.9         20.9        21.2         21.2         20.5           20.5
   C/I - Other Link Degradations          (dB)          15.6         15.6        18.0         18.0        15.9         15.9         21.6           21.6
   C/(N+I) - Total, Actual                (dB)          10.4         5.8         12.9          5.8        13.4          5.8         15.1            5.8
   C/(N+I) - Total, Required              (dB)           5.8         5.8          5.8          5.8         5.8          5.8          5.8            5.8
   Excess Margin                          (dB)           4.6         0.0          7.1          0.0         7.6          0.0          9.3            0.0
   Availability                           (%)           N/A         99.94        N/A         99.93        N/A         99.86         N/A           99.81
Aggregate Interference Assessment:
   (C/N) - no ASI                         (dB)          10.8         5.9         13.7         5.9         14.2         6.0          16.6           6.0
   Degradation due to aggregate ASI       (dB)           0.4         0.1          0.8         0.1          0.8         0.1           1.5           0.2



Document Created: 2011-06-02 10:48:40
Document Modified: 2011-06-02 10:48:40

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