Attachment Schedule S DOC 2

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

IBFS_SATAMD2011040800070_891617

EchoStar 17/24 GHz Link Budget

              Link Parameters                          Clear Sky    Faded D/L   Clear Sky   Faded D/L
                                                      (New York)   (New York)    (Miami)     (Miami)


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)          37,670       37,670      36,853      36,853
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)          55.6         55.6        57.6        57.6
Downlink:
   Carrier Frequency                      (MHz)         17,500       17,500      17,500      17,500
   Atmospheric and Other Losses           (dB)           0.2           3.9         0.2         5.4
   Free Space Loss                        (dB)          208.8         208.8      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         10.6        13.1         10.2
   System (LNA+Sky) Noise Temperature     (K)            200           359        200          394
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)           14.2         7.9         16.4         8.2
   C/I - Aggregate uplink ASI             (dB)           37.5        37.5         37.5         37.5
   C/I - Aggregate downlink ASI           (dB)           19.3        19.3         18.5         18.5
   C/I - Other Link Degradations          (dB)           22.0        22.0         22.0         22.0
   C/(N+I) - Total, Actual                (dB)           12.5         7.5         13.6         7.6
   C/(N+I) - Total, Required              (dB)           7.5          7.5          7.5         7.5
   Excess Margin                          (dB)           5.0          0.0          6.1         0.1
   Availability                           (%)            N/A         99.80        N/A         99.62
Aggregate Interference Assessment:
   (C/N) - no ASI                         (dB)           13.5         7.7         15.3         8.0
   Degradation due to aggregate ASI       (dB)           1.0          0.3          1.7         0.4



Document Created: 2011-06-02 11:00:14
Document Modified: 2011-06-02 11:00:14

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