Attachment RadHaz

This document pretains to SES-LIC-20150917-00626 for License on a Satellite Earth Station filing.

IBFS_SESLIC2015091700626_1103266

CALKHOUN SATELLITE COMMUNICATIONS TEMP FIXED EARTH STATION ANALYSIS OF NON—IONIZING RADIATION FOR A 2.4 METER KU 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 lmw/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*W1) Near Field Region Density Snf(m/m2)=16*.6*P/(3.14*D2) Transition Region Rff (m)=. 6*d2/W1 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)= 14.1 Power(w)=250.0 AntGain(db)= 48.9 AntSize(m)= 2. 4 Wavelength(m)= .021 Antenna surface(m2)= 4.5 AntSurfDen $s (w/m2)= 221.16 Ss (mw/cm2)= 22.12 Near—Field Region Rnf(m)= 67.80 Near—Field Den Snf(w/m2)= 143.75 Snf (mw/cm2)= 14 .38 Transition Region Rff(m)= 162.7 Tran Region Den St(w/cm2)= 59. 90 St (mw/cm2)= 5.99 Far Field Region Sff(w/cm2)= .04 Sff (mw/cm2)= .00 ANALYSIS RESULTS LIMITS — imw/cm2 Uncontrolled, Smw/cm2 Controlled Antenna Surface Density Ss (mw/cm22.116 Potential Hazard, >= Limit Near Field Density Snf (mw/cl4.375 Transition Region St (mw/cm 5.990 Far Field Density Sff (mw/c .004 For a minimum elevation angle of 5.0(deg) and a object height of 8.0(ft) For radiation non—hazard, the minimum distance to object= 99.3(ft) Prepared by: TELE—SCI SOLUTIONS, LLC P.O. Box 237 Augusta, NJ 07822—0237

CALHOUN SATELLITE COMMUNICATIONS TEMPORARY FIXED EARTH STATION ANALYSIS OF NON—IONIZING RADIATION FOR A 2.4 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 imw/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) FP=Ctr Frequency(gHz), Wl=WaveLength (meters) Antenna Surface (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/m2)=16*.6*P/(3.14*D2) Transition Region Rff (m)=.6*d2/W1 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)= 6.1 Power(w)=250.0 AntGain(db)= 41.6 AntSize(m)= 2+ Wavelength(m)= .049 Antenna surface(m2)= 4.5 AntSurfDen Ss (w/m2)= 221.16 Ss (mw/cm2)= 22.1¢ Near—Field Region Rnf(m)= 29.46 Near—Field Den Snf(w/m2)= 143179 Snf (mw/cm2)= 14.38 Transition Region Rff(m)= 70 .7 Tran Region Den St (w/cm2)= 59. 90 St (mw/cm2)= 5.99 Far Field Region Sff(w/cm2)= 47 Sff (mw/cm2)= .02 ANALYSIS RESULTS LIMITS — Imw/cm2 Uncontrolled, Smw/cm2 Controlled Antenna Surface Density Ss(mw/cm22.116 Potential Hazard, >= Limit Near Field Density Snf (mw/cl4.375 Transition Region St (mw/cm 5.990 Far Field Density Sff(mw/c .017 For a minimum elevation angle of 5.0(deg) and a object height of 8.0(ft) For radiation non—hazard, the minimum distance to object= 99.3(ft) Prepared by: Tele—Sci Solutions, LLC P.O. Box 237 Augusta, NJ 07822—0237


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Document Modified: 2015-09-17 11:49:17
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