Attachment Schedule S DOC 7

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

IBFS_SATMOD2011050400085_891585

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)          38,110       38,110      38,110      38,110
   Rx E/S Range to Satellite              (km)          37,577       37,577      36,528      36,528
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)             0.7         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)          54.6         54.6        58.9        58.9
Downlink:
   Carrier Frequency                      (MHz)         17,500       17,500      17,500      17,500
   Atmospheric and Other Losses           (dB)            0.2         3.1          0.2         6.8
   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         10.9        13.1         9.9
   System (LNA+Sky) Noise Temperature     (K)             200         335         200          416
Total Link:
   Bandwidth                              (dB-Hz)        73.6         73.6        73.6        73.6
   C/N - Thermal Uplink                   (dB)           34.7         34.7        34.7        34.7
   C/N - Thermal Downlink                 (dB)           13.2         8.1         17.7         8.0
   C/I - Aggregate uplink ASI             (dB)           37.5         37.5        37.5        37.5
   C/I - Aggregate downlink ASI           (dB)           18.3         18.3        19.9        19.9
   C/I - Other Link Degradations          (dB)           22.0         22.0        22.0        22.0
   C/(N+I) - Total, Actual                (dB)           11.6         7.5         14.7         7.6
   C/(N+I) - Total, Required              (dB)           7.5          7.5          7.5         7.5
   Excess Margin                          (dB)           4.1          0.0          7.2         0.1
   Availability                           (%)            N/A         99.70        N/A         99.74
Aggregate Interference Assessment:
   (C/N) - no ASI                         (dB)           12.6         7.9         16.3         7.8
   Degradation due to aggregate ASI       (dB)           1.0          0.4          1.6         0.3



Document Created: 2011-06-02 10:50:36
Document Modified: 2011-06-02 10:50:36

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