Attachment Exhibit D

This document pretains to SES-MFS-20110912-01065 for Modification w/ Foreign Satellite (earth station) on a Satellite Earth Station filing.

IBFS_SESMFS2011091201065_916382

Exhibit D-1 HUGHES NETWORK SYSTEMS E060382 and E060383 Request for Modification RADIATION CALCULATIONS FOR 9.20 meter EARTH STATION Nomenclature Formula Value Unit INPUT PARAMETERS M = Antenna Aperture Major Axis 9.20 meters m = Antenna Aperture Minor Axis 9.20 meters d = Diameter of Feed Mouth 0.102 meters f = frequency 30 GHz P = Max Power into Antenna 220.0 Watts n = Aperture Effeciency 51% k = Wavelength @ 30.00 GHz 0.0100 meters CALCULATED VALUES A = Area of Reflector PIxMxm/4 66.476 meters^2 l = Length of Near Field M^2/4k 2117 meters L = Beginning of Far Field 0.6M^2/k 5082 meters G = Antenna Gain @ 30.00 GHz n(4xPIxA)/k^2 4,266,254 (66.3) dBi a = Area of Feed Mouth PI*d^2/4 0.0082 meters^2 POWER DENSITY CALCULATIONS Maximum Power Density in Region Region Hazard Assessment Formula Value (mW/cm^2 (FCC MPE Limit = 1 mW/cm^2) 1 Near Field 4nP/A 0.71 < FCC MPE Limit 2 Far Field GP/(4(PI)L^2) 0.30 < FCC MPE Limit 3 Transition <= Nr Fld Region 0.71 < FCC MPE Limit 4 Near Reflector Surface 4P/A 1.38 > FCC MPE Limit (See Exhibit A) 5 Between Reflector & Ground P/A 0.35 < FCC MPE Limit 6 Between Subreflector and 4P/a 11258.9 > FCC MPE Limit (See Exhibit A) Feed

Exhibit D-2 Hughes Network Systems Call Sign E060382 Request for Modification RADIATION CALCULATIONS FOR 1.80 meter EARTH STATION Nomenclature Formula Value Unit INPUT PARAMETERS M = Antenna Aperture Major Axis 1.80 meters m = Antenna Aperture Minor Axis 1.80 meters d = Diameter of Feed Mouth 0.133 meters f = frequency 30 GHz P = Max Power into Antenna 11.3 Watts n = Aperture Effeciency 54% k = Wavelength @ 30.00 GHz 0.0100 meters CALCULATED VALUES A = Area of Reflector PIxMxm/4 2.545 meters^2 l = Length of Near Field M^2/4k 81 meters L = Beginning of Far Field 0.6M^2/k 195 meters G = Antenna Gain @ 30.00 GHz n(4xPIxA)/k^2 172,918 (52.4) dBi a = Area of Feed Mouth PI*d^2/4 0.0139 meters^2 POWER DENSITY CALCULATIONS Maximum Power Density in Region Region Hazard Assessment Formula Value (mW/cm^2 (FCC MPE Limit = 1 mW/cm^2) 1 Near Field 4nP/A 0.93 < FCC MPE Limit 2 Far Field GP/(4(PI)L^2) 0.40 < FCC MPE Limit 3 Transition <= Nr Fld Region 0.93 < FCC MPE Limit 4 Near Reflector Surface 4P/A 1.73 > FCC MPE Limit (See Exhibit A) 5 Between Reflector & Ground P/A 0.43 < FCC MPE Limit 6 Between Reflector and Feed 4P/a 316.7 > FCC MPE Limit (See Exhibit A)


Document Created: 2011-09-12 17:28:30
Document Modified: 2011-09-12 17:28:30
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