Exhibit 3A RADHAZ

0078-EX-ST-2005 Text Documents

HNS License Sub, LLC

2005-02-14ELS_69257

RADIATION CALCULATIONS FOR 0.74 meter EARTH STATION Nomenclature Formula Value Unit INPUT PARAMETERS M = Antenna Aperture Major Axis 0.98 meters m = Antenna Aperture Minor Axis 0.56 meters w = Major Axis of Feed Mouth 0.065 meters h = Minor Axis of Feed Mouth 0.042 meters P = Max Power into Antenna 0.5 Watts n = Apperture Effeciency 67% k = Wavelength @ 30 GHz 0.0100 meters CALCULATED VALUES A = Area of Reflector PIxMxm/4 0.431 meters^2 l = Length of Near Field M^2/4k 24 meters L = Beginning of Far Field 0.6M^2/k 58 meters G = Antenna Gain @ 30 GHz n(4xPIxA)/k^2 36,295 (45.6) dBi a = Area of Feed Mouth PIxwxh/4 0.002 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 0.31 < FCC MPE Limit 2 Far Field GP/(4(PI)L^2) 0.04 < FCC MPE Limit 3 Transition <= Nr Fld Region 0.31 < FCC MPE Limit


Document Created: 2005-02-14 11:12:32
Document Modified: 2005-02-14 11:12:32
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