Attachment NBC-Temporary-Fixed-

This document pretains to SES-LIC-20071031-01483 for License on a Satellite Earth Station filing.

IBFS_SESLIC2007103101483_600950

FCC OET-65 RF Exposure Study - Satellite Uplink Facility NBC 4.5 meter transportable digital Ku-band uplink FCC Maximum Permissible Exposure Levels Source Units 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 450.0 cm Antenna surface area calculated 159043 cm2 Feed diameter measured 12.000 cm2 Feed area calculated 113 Frequency (entry) 14500 MHz Wavelength (speed of light = 299,792,458 m/s) calculated 2.068 cm Transmit power at flange Application 300000 milliwatts Antenna gain datasheet 53.9 dBi Antenna gain factor calculated 245471 Height of base of antenna above ground measured 1.9 m Height of center of antenna above ground measured 4.15 m Minimum Elevation Angle (entry) 10 degrees Minimum Elevation Angle calculated 0.17453 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 7.55 mW/cm2 Potential Hazard Potential Hazard Power density at feed flange Eq. 11 Pg 27 10610.33 mW/cm2 Potential Hazard Potential Hazard Extent of near-field Eq. 12 Pg 27 24486 cm Maximum near-field power density Eq. 13 Pg 28 3.96 mW/cm2 Potential Hazard Below FCC MPE Aperture efficiency Eq. 14 Pg 28 0.53 Distance to beginning of far-field Eq. 16 Pg 29 58765.65 cm Power density at end of the transition regiion Eq. 17 Pg 29 1.65 mW/cm2 Potential Hazard Below FCC MPE Maximum far-field power density Eq. 18 Pg 29 1.697 mW/cm2 Potential Hazard Below FCC MPE Main Beam Far-field region safe exposure distances Minimum distance for public/uncontrolled exposure Eq. 18 Pg 29 765.52 meters Height at minimum antenna elevation angle calculated 137.08 meters Horizontal distance calculated 753.89 meters Minimum distance for occupational/controlled exposure Eq. 18 Pg 29 342.35 meters Height at minimum antenna elevation angle calculated 63.6 meters Horizontal distance calculated 337.15 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 0.0396 mW/cm2 Below FCC MPE Below FCC MPE Public/uncontrolled exposure off-axis distance Diam/or Eq 17 4.5 meters Occupatonal/controlled exposure off-axis distance Diam/or Eq 17 4.5 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) 2 degree(s) Off-axis antenna gain factor OET-65 Pg 30* 280 Minimum distance for public/uncontrolled exposure Eq. 18 Pg 29 ** 587.66 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. Prepared by Doug Lung, NBC Universal, October 30, 2007


Document Created: 2019-04-13 00:30:34
Document Modified: 2019-04-13 00:30:34
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