Attachment NWM-3_E000152 rad ha

This document pretains to SES-MOD-20150123-00113 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2015012300113_1071934

Radiation Hazard Analysis Operator: SES Location Designation: Washington Mediaport FCC Callsign: E000152 County: Prince William SES ID: NWM-3 Town: Bristow STA: State/Zip: Virginia 20136 Input Values Value Unit Band Frequency D = Aperture Diameter 9.00 Meters L 1000-2000 d = Subreflector Diameter 0.94 Meters S 2000-4000 G = Antenna Gain 53.2 dBi C 4000-8000 FCC Designation C Band X 8000-12500 F = Frequency 6.175 GHz Ku 12500-18000 P = Transmitter Power Watts: 589 Watts K 18000-25500 R ua = closest point to uncontrolled area 15 meters Ka 26500-40000 Elevation angle at closest point R ua 10 Degrees O 40000-50000 Height (AGL) 2.60 meters V 50000-75000 OET 65 Calculated Values Formula Value Unit c λ= Wavelength 0.0486 meters F (G/10) G = Antenna Gain 10 208929.6131 (W) linear Gλ2/4π η = Apperture Efficiency 62% percentage πD2/4 A = Area of reflector πR2 63.617 meters 2 a = area of subreflector πr2 6939.778 cm 2 D2 417.091 meters R nf = Near-Field Region 4λ 72 Meters AGL >Rnf 417.091 >meters R t = Transition Region <Rff 1001.017 <meters R ff = Far Field Region 0.6D2 1001.017 meters λ 174 Meters AGL Exposure Limits Radiation Analysis Zone Formula Level Value General Public Occupational <1mW/cm2 <5mW/cm2 4P >FCC MPE See >FCC MPE See 1 Power Subreflector 339.492 mW/cm2 a Note 1 Note 2 4P >FCC MPE See 2 Antenna Surface 3.703 mW/cm2 <FCC MPE A Note 1 P 3 Main Reflector Ground 0.926 mW/cm2 <FCC MPE <FCC MPE A 4η P >FCC MPE See 4 S nf =Near-Field Power Density 2.281 mW/cm2 <FCC MPE A Note 1 >FCC MPE See 5 S t = Max Transition Power Density < Snf 2.281 mW/cm2 <FCC MPE Note 1 PG 6 S ff = Max Far field Power Density 0.977 mW/cm2 <FCC MPE <FCC MPE 4πRff2 7 Off Access Level Near Field Snf - 20 dB 0.02281 mW/cm2 <FCC MPE <FCC MPE Notes 1. The antenna is installed in a controlled location access is restricted to authorized personnel only. The antenna is marked with RF Radiation Hazard signage. 2. Inside the controlled area, MPE levels exceed the MPE exposure for occupational levels. The levels will be reduced to safe MPE by removing power to the transmitters when work is performed on or around the antenna. This area can only be accessed by qualified personnel. 3. The field develops 2.6 meters above ground level at the minimum elevation angle which is not accessable to the general public. Generated 12/23/2014 1 of 1 NWM-3_E000152 rad haz rpt.xls


Document Created: 2014-12-23 12:08:15
Document Modified: 2014-12-23 12:08:15
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