Attachment FCC Rad Haz MPTV.pdf

This document pretains to SES-LIC-20070710-00914 for License on a Satellite Earth Station filing.

IBFS_SESLIC2007071000914_577157

MILWAUKEE PUBLIC TV MILWAUKEE, W1 ANALYSIS OF NON—IONIZING RADIATION FOR A 6.1M VERTEX 6GHZ BAND EARTH STATION This report analyzes the non—ionizing radiation levals for an earth station antenna. The OET Bulletin 65, Edit. 97—01, August 1997, Evaluating Compliance with FCC Guidelines for Human Exposure to Radio frequancy Electromagnetic Fields spacifies that the maximun level of nom—ionizing radiation that a person may be exposed to covar a six minute period is an average power density equal to 5 mw/oem2 in a controlled environment. For the general population, a person may be exposed to cover a thirty minute period is an avéerage power density equal to imw/cm2 in an uncon— trolled environment. It is the purpose of this report to detarmine 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 Surfaice (m2) A=3.14*D2/4 Antenna Surface Density(w/m2) Ss=4*P/A Wavelength W1(m)=3/(F*10) * Near Field Region . Rnf (m) =D2/ (4*W1) Near Field Region Density Snf (m/flfl)‘flls* .6+P/(3 :14*D2) Trangition Region \Rff (m)=.6*d42/w1 Transition Region Density St(w/m2)=Snf*Rnf/Rff Far Field Region Sff (m)=P*G/ (4*3.14*REF) Earth Station Radiation Hazsrd Calculations Freq(ghz)= 6.2 Power(w)=450.0 AntGain(db)= 49.6 AntSize(m)= 6.1 Wavelength(m)= .049 Antenna surface(m2)= 29.2 AntSurfDen $s (w/m2)= 61 .62 Ss (mw/cm2)= §.16 Near—Field Region Rnf (m)= 191.48 Near—Fiald Den Snf (w/m2)= 40.05 Snf (mw/om2)= 4 .01 Transition Region Rff(m)= 459.5 Tran Region Den St(w/om2)= 16.69 St tmw/cm2)= 1.67 Far Field Region Sff (w/om2)= .01 SE (mw/m2)= .90 ANALYSIS RESULTS LIMITS — imw/om2 Uncontrolled, Smw/am2 Controlled Antenna Surface Dansity Ss(mw/om 6.162 Potential Hazard, >« Limit Near Field Density Snf (mw/c 4.005 Transition Region St (mw/om 1.669 Far Field Density Sff (mw/a .001 Earth Station is a roof top with no RF Hazard to the public. Prepared by: Multicomm Sciences Int‘l,Inc., Denvillea, NJ (973) 627—7400


Document Created: 2007-07-10 15:30:22
Document Modified: 2007-07-10 15:30:22
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