Attachment Moody-PWR-FCC

This document pretains to SES-AMD-20160517-00433 for Amended Filing on a Satellite Earth Station filing.

IBFS_SESAMD2016051700433_1136410

Moody Bible 05/17/16 Anderson, IN M.Kirk Earth Station (ES) RF Power (wattage) required to produce a nominal downlink 23 dBw digital carrier as measured Washington, DC. Uplink to be in Anderson, IN and will be utilizing a Prodelin 1385 antenna. Carrier is a digital variety utilizing 400 KHz of allocated space segment. Earth Station (ES) RF Power in Watts Required per Carrier = 3.0 watts Log of wattage, times 10, equalls dBw figure } log 3 watts (x) 10 = 4.77 dBw For a maximum carrier power in a 4 KHz bandwidth (Max carrier transmit EIRP density in 4 KHz bandwidth): Occupied BW = 400 Khz divide by 4 K, .... 400 / 4 = 100 log of that, times 10, equalls.... correction factor expressed in dBw in a 4 Khz BW } log 100 (x) 10 = 20.00 dBw/4Khz 4.77 dBw (-) 20.00 dBw = -15.23 dBw max RF power density into antenna in 4 Khz BW -15.23 (+) 45.9 (antenna gain) = 30.67 dBw; max EIRP density per carrier in 4 Khz BW [FCC Q:E49] For a maximum transmit EIRP power per Carrier [FCC Q:E48]: Carrier power (in dBw) + Antenna gain (in dBi) = Maximum transmit EIRP power (in dBw) 4.77 dBw (+) 45.9 dBi = 50.67 dBw Total Input Power at antenna flange (and) Total EIRP for all carriers in dBW [FCC Q: E38 and E40]: Total (SSPA) power in watts at antenna input flange = 20 watts [FCC Q:E38]: Log of wattage, times 10, equalls dBw figure } log 20 watts (x) 10 = 13.01 dBw Total input power at antenna flange (in dBw) + Antenna gain (in dBi) = Total transmit EIRP power (in dBw) 13.01 dBw (+) 45.9 dBi = 58.91 dBw [FCC Q:E40] Example: (nominal 6 carriers @ 3 watts each) + (1 reduced power carrier @ 2 watts) = 20 watts (all carriers same emission designation type).


Document Created: 2016-05-17 15:03:32
Document Modified: 2016-05-17 15:03:32
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