Attachment Schedule S DOC 6

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

IBFS_SATMOD2011050400085_891589

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)       -6.8        -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)          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         4.4          0.2         8.2
   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         10.4        13.1         9.7
   System (LNA+Sky) Noise Temperature     (K)             200         371         200          434
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)           13.0         6.2         17.5         6.1
   C/I - Aggregate uplink ASI             (dB)           37.3         37.3        37.3        37.3
   C/I - Aggregate downlink ASI           (dB)           18.1         18.1        19.7        19.7
   C/I - Other Link Degradations          (dB)           22.0         22.0        22.0        22.0
   C/(N+I) - Total, Actual                (dB)           11.4         5.8         14.5         5.8
   C/(N+I) - Total, Required              (dB)           5.8          5.8          5.8         5.8
   Excess Margin                          (dB)           5.6          0.0          8.7         0.0
   Availability                           (%)            N/A         99.84        N/A         99.82
Aggregate Interference Assessment:
   (C/N) - no ASI                         (dB)           12.5         6.0         16.1         6.0
   Degradation due to aggregate ASI       (dB)           1.0          0.3          1.6         0.2



Document Created: 2011-06-02 10:51:50
Document Modified: 2011-06-02 10:51:50

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