Attachment SouthMountain C9 Rad

This document pretains to SES-MOD-20150731-00482 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2015073100482_1088460

Radiation Hazard Analysis Operator: SES Location Designation: South Mountain ES FCC Callsign: KA272 County: Ventura SES ID: C-9 Town: Somis STA: State/Zip: California 20136 Input Values Value Unit Band Frequency D = Aperture Diameter 21.00 Meters L 1000-2000 d = Subreflector Diameter 3.5 Meters S 2000-4000 G = Antenna Gain 61 dBi C 4000-8000 FCC Designation C Band X 8000-12500 F = Frequency 6.000 GHz Ku 12500-18000 P = Transmitter Power Watts: 1349 Watts K 18000-25500 R ua = closest point to uncontrolled area 50 meters Ka 26500-40000 Elevation angle at closest point R ua 10 Degrees O 40000-50000 Height (AGL) 8.68 meters V 50000-75000 OET 65 Calculated Values Formula Value Unit c λ= Wavelength 0.0500 meters F G = Antenna Gain 10 (G/10) 1258925.412 (W) linear 2 Gl /4p h = Apperture Efficiency 72% percentage pD2/4 A = Area of reflector pR2 346.361 meters 2 a = area of subreflector pr2 96211.275 cm 2 D2 2206.471 meters R nf = Near-Field Region 4l 383 Meters AGL >Rnf 2206.471 >meters R t = Transition Region <Rff 5295.530 <meters 0.6D2 5295.530 meters R ff = Far Field Region l 920 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 56.085 mW/cm2 a Note 1 Note 2 4P >FCC MPE See 2 Antenna Surface 1.558 mW/cm2 <FCC MPE A Note 1 P 3 Main Reflector Ground 0.389 mW/cm2 <FCC MPE <FCC MPE A 4h P >FCC MPE See 4 S nf =Near-Field Power Density 1.125 mW/cm2 <FCC MPE A Note 1 >FCC MPE See 5 S t = Max Transition Power Density < Snf 1.125 mW/cm2 <FCC MPE Note 1 PG 6 S ff = Max Far field Power Density 0.482 mW/cm2 <FCC MPE <FCC MPE 4pRff2 7 Off Access Level Near Field Snf - 20 dB 0.01125 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 8.68 meters above ground level at the minimum elevation angle which is not accessable to the general public. Generated 5/20/2015 1 of 1 rad haz auto report-tk-mod


Document Created: 2015-05-20 10:14:10
Document Modified: 2015-05-20 10:14:10
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