Attachment TOWBOY-SNG_Uplink_OE

This document pretains to SES-LIC-20060728-01280 for License on a Satellite Earth Station filing.

IBFS_SESLIC2006072801280_515567

FCC OET-65 RF Exposure Study - Satellite Uplink Facility NBC TOWBOY Old FCC License, E890799 Antenna Vendor: Vertex RSI Model 240KV Antenna Size: 2.3 m Amplifier Make/Model: ETM 450 KU Amplifier Max Power: 450 w FCC Maximum Permissible Exposure Levels Source Units Notes Public/uncontrolled area exposure limit 47CFR §1.1310 1 mW/cm2 Occupational/controlled area exposure limit 47CFR §1.1310 5 mW/cm2 Input Data Antenna Diameter datasheet 230.0 cm Antenna surface area calculated 41548 cm2 Feed flange diameter measured 6.350 cm Feed flange area calculated 32 cm2 Frequency (entry) 14125 MHz Wavelength (speed of light = 299,792,458 m/s) calculated 2.122 cm Transmit power at flange datasheet 350000 milliwatts Antenna gain datasheet 49.3 dBi Antenna gain factor calculated 85114 Height of base of antenna above ground measured 3.5 m Height of center of antenna above ground measured 4.54 m Minimum Elevation Angle (entry) 5 degrees Minimum Elevation Angle calculated 0.08727 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 33.69632065 mW/cm2 Potential Hazard Potential Hazard Power density at feed flange Eq. 11 Pg 27 44206.96541 mW/cm2 Potential Hazard Potential Hazard Extent of near-field Eq. 12 Pg 27 6231 cm Maximum new-field power density Eq. 13 Pg 28 24.74523358 mW/cm2 Potential Hazard Potential Hazard Aperture efficiency Eq. 14 Pg 28 0.734360105 Distance to beginning of far-field Eq. 16 Pg 29 14954.59569 cm Power density at end of the transition regiion Eq. 17 Pg 29 10.31051399 mW/cm2 Potential Hazard Potential Hazard Maximum far-field power density Eq. 18 Pg 29 10.600 mW/cm2 Potential Hazard Potential Hazard Main Beam Far-field region safe exposure distances Minimum distance for public/uncontrolled exposure Eq. 18 Pg 29 486.8880216 meters Height at minimum antenna elevation angle calculated 46.97508716 meters Horizontal distance calculated 485.0352657 meters Minimum distance for occupational/controlled exposure Eq. 18 Pg 29 217.7429427 meters Height at minimum antenna elevation angle calculated 23.5175479 meters Horizontal distance calculated 216.9143651 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 Maximum off-axis near field power density Eq. 13 Pg 28 0.2475 mW/cm2 Below FCC MPE Below FCC MPE Public/uncontrolled exposure off-axis distance Diam/or Eq 17 2.3 meters Occupatonal/controlled exposure off-axis distance Diam/or Eq 17 2.3 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) 5 degree(s) Off-axis antenna gain factor OET-65 Pg 30* 28 Minimum distance for public/uncontrolled exposure Eq. 18 Pg 29 ** 149.5459569 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 shown.


Document Created: 2019-04-14 22:55:05
Document Modified: 2019-04-14 22:55:05
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