Attachment Rad. Haz

This document pretains to SES-MOD-20150615-00358 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2015061500358_1092394

FCC OET-65 RF Exposure Study - Satellite Uplink Facility 2958-KVVU FCC Maximum Permissible Exposure Levels Source Units 1 mW/cm 2 Public/uncontrolled area exposure limit 47CFR §1.1310 5 mW/cm 2 Occupational/controlled area exposure limit 47CFR §1.1310 Input Data Antenna Diameter datasheet 120.0 cm 11310 cm 2 Antenna surface area calculated Sub-reflector diameter measured N/A cm Sub-reflector area calculated N/A cm2 Feed flange diameter measured 4.445 cm 16 cm 2 Feed flange area calculated Frequency (entry) 14125 MHz Wavelength (speed of light = 299,792,458 m/s) calculated 2.122 cm Transmit power at flange Application 79432 milliwatts Antenna gain datasheet 43.3 dBi Antenna gain factor calculated 21380 Height of base of antenna above ground measured 2.921 m Height of center of antenna above ground measured 2.171 m Minimum Elevation Angle (entry) 15 degrees Minimum Elevation Angle calculated 0.26180 radians FCC Maximum Permissible Exposure (MPE) Results calculated using FCC Bulletin OET-65 (Edition 97-01 August 1997) Uncontrolled Controlled Maximum power density at antenna surface Eq. 11 Pg 27 28.0933232 mW/cm 2 Potential Hazard Potential Hazard Power density at subreflector Eq. 11 Pg 27 0 mW/cm 2 N/A N/A Power density at feed flange Eq. 11 Pg 27 20474.9136 mW/cm 2 Potential Hazard Potential Hazard Extent of near-field Eq. 12 Pg 27 1696 cm Maximum near-field power density Eq. 13 Pg 28 18.2606601 mW/cm 2 Potential Hazard Potential Hazard Aperture efficiency datasheet 0.65 Distance to beginning of far-field Eq. 16 Pg 29 4070.81622 cm Power density at end of the transition region Eq. 17 Pg 29 7.60860837 mW/cm 2 Potential Hazard Potential Hazard Maximum far-field power density Eq. 18 Pg 29 8.155 mW/cm 2 Potential Hazard Potential Hazard Main Beam Far-field region safe exposure distances Minimum distance for public/uncontrolled exposure Eq. 18 Pg 29 116.249961 meters Height at minimum antenna elevation angle calculated 32.258704 meters Horizontal distance calculated 112.28884 meters Minimum distance for occupational/controlled exposure Eq. 18 Pg 29 51.9885632 meters Height at minimum antenna elevation angle calculated 15.6266303 meters Horizontal distance calculated 50.2170958 meters Off-Axis Near Field/Transition Region safe exposure distances from antenna (20 dB reduction in power density at distances greater than one antenna diameter from the main beam center.) OET-65 Pg 30 0.1826 mW/cm Below FCC MPE Below FCC MPE 2 Maximum off-axis near field power density Eq. 13 Pg 28 Public/uncontrolled exposure off-axis distance Diam/or Eq 17 1.2 meters Occupatonal/controlled exposure off-axis distance Diam/or Eq 17 1.2 meters Off-Axis Far Field safe exposure distances from the antenna (Based on side lobe attenuation required by FCC 25.209(a)(2)) Angle off main beam axis (1 to 48 degrees) (entry) 15 degree(s) Off-axis antenna gain factor OET-65 Pg 30* 2 Minimum distance for public/uncontrolled exposure Eq. 18 Pg 29 ** 40.7081622 meters * Gain converted from dBi to linear multiple ** If calculated distance is less than the start of the far field region, the distance to the start of the far field region is used.


Document Created: 2015-06-12 15:15:33
Document Modified: 2015-06-12 15:15:33
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