Attachment Exhibit C

This document pretains to SES-MOD-20130227-00220 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2013022700220_987392

Exhibit C Detroit transportable Call Sign E990170 Request for Modification RADIATION CALCULATIONS FOR 2.40 meter EARTH STATION Nomenclature Formula Value Unit INPUT PARAMETERS M = Antenna Aperture Major Axis 2.40 meters m = Antenna Aperture Minor Axis 2.40 meters d = Diameter of Feed Mouth 0.152 meters f = frequency 14.25 GHz P = Max Power into Antenna 300.0 Watts n = Aperture Effeciency 65% k = Wavelength @ 14.25 GHz 0.0210 meters CALCULATED VALUES A = Area of Reflector PIxMxm/4 4.524 meters^2 l = Length of Near Field M^2/4k 68 meters L = Beginning of Far Field 0.6M^2/k 164 meters G = Antenna Gain @ 14.25 GHz n(4xPIxA)/k^2 83,488 (49.2) dBi a = Area of Feed Mouth PI*d^2/4 0.0181 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 17.24 > FCC MPE Limit (See Exhibit A) 2 Far Field GP/(4(PI)L^2) 7.39 > FCC MPE Limit (See Exhibit A) 3 Transition <= Nr Fld Region 17.24 > FCC MPE Limit (See Exhibit A) 4 Near Reflector Surface 4P/A 26.53 > FCC MPE Limit (See Exhibit A) 5 Between Reflector & Ground P/A 6.63 > FCC MPE Limit (See Exhibit A) 6 Between Reflector and Feed 4P/a 6613.1 > FCC MPE Limit (See Exhibit A)


Document Created: 2013-02-22 11:28:15
Document Modified: 2013-02-22 11:28:15
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