Attachment RF Hazard Study

This document pretains to SES-LIC-20130226-00210 for License on a Satellite Earth Station filing.

IBFS_SESLIC2013022600210_985862

UNIVISION NETWORKS CHICAGO, IL ANALYSIS OF NON-IONIZING RADIATION FOR AN ANDREW 4.5 METER C BAND EARTH STATION This report analyzes the non-ionizing radiation levels for an earth station antenna. The OET Bulletin 65, Edit. 97-01, August 1997, Evaluating Compliance with FCC Guidelines for Human Exposure to Radio frequency Electromagnetic Fields specifies that the maximun level of non-ionizing radiation that a person may be exposed to cover a six minute period is an average power density equal to 5 mw/cm2 in a controlled environment. For the general population, a person may be exposed to cover a thirty minute period is an average power density equal to 1mw/cm2 in an uncon- trolled environment. It is the purpose of this report to determine the power flux densities of the earth station surface area, in the near field, transition region and far field. P=Antenna Power(watts), G=Antenna Gain(db), D=Antenna Diameter(meters) F=Ctr Frequency(gHz), Wl=WaveLength(meters) Antenna Surface(m2) A=3.14*D2/4 Antenna Surface Density(w/m2) Ss=4*P/A Wavelength Wl(m)=3/(F*10) Near Field Region Rnf(m)=D2/(4*Wl) Near Field Region Density Snf(m/m2)=16*.6*P/(3.14*D2) Transition Region Rff(m)=.6*d2/Wl Transition Region Density St(w/m2)=Snf*Rnf/Rff Far Field Region Sff(m)=P*G/(4*3.14*Rff) Earth Station Radiation Hazard Calculations Freq(ghz)= 6.2 Power(w)=-15.5 AntGain(db)= 46.2 AntSize(m)= 4.5 Wavelength(m)= .048 Antenna surface(m2)= 15.9 AntSurfDen Ss(w/m2)= -3.91 Ss(mw/cm2)= -.39 Near-Field Region Rnf(m)= 104.62 Near-Field Den Snf(w/m2)= -2.54 Snf(mw/cm2)= -.25 Transition Region Rff(m)= 251.1 Tran Region Den St(w/cm2)= -1.06 St(mw/cm2)= -.11 Far Field Region Sff(w/cm2)= .00 Sff(mw/cm2)= .00 ANALYSIS RESULTS LIMITS - 1mw/cm2 Uncontrolled, 5mw/cm2 Controlled Antenna Surface Density Ss(mw/cm -.391 No Potential Hazard, < Limit Near Field Density Snf(mw/c -.254 Transition Region St(mw/cm -.106 Far Field Density Sff(mw/c .000 For a minimum elevation angle of 39.1(deg) and a object height of 10.0(ft) For radiation non-hazard, the minimum distance to object= 22.6(ft) Prepared by: TELE-SCI SOLUTIONS, LLC P.O. Box 237 Augusta, NJ 07822-0237_


Document Created: 2013-02-12 14:54:12
Document Modified: 2013-02-12 14:54:12
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