Attachment IBFS-WA-2 attach.pdf

This document pretains to SES-LIC-20060823-01438 for License on a Satellite Earth Station filing.

IBFS_SESLIC2006082301438_521876

FCC OET-65 RF Exposure Study - Satellite Uplink Facility NBC WA-2 No FCC License Found Antenna Vendor: Vertex RSI Model 240KV Antenna Size: 2.3 m Amplifier Make/Model: ETM 125 KU Amplifier Max Power: 125 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 WR-75 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 125000 milliwatts Antenna gain datasheet 49.3 dBi Antenna gain factor calculated 85114 Height of base of antenna above ground measured 3.96 m Height of center of antenna above ground measured 5.11 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 12.03440023 mW/cm2 Potential Hazard Potential Hazard Power density at feed flange Eq. 11 Pg 27 15788.20193 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 8.837583423 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 3.682326426 mW/cm2 Potential Hazard Below FCC MPE Maximum far-field power density Eq. 18 Pg 29 3.786 mW/cm2 Potential Hazard Below FCC MPE Main Beam Far-field region safe exposure distances Minimum distance for public/uncontrolled exposure Eq. 18 Pg 29 290.9712465 meters Height at minimum antenna elevation angle calculated 30.4698151 meters Horizontal distance calculated 289.864013 meters Minimum distance for occupational/controlled exposure Eq. 18 Pg 29 130.1262973 meters Height at minimum antenna elevation angle calculated 16.45125409 meters Horizontal distance calculated 129.6311275 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 0.0884 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: 2019-04-26 05:58:28
Document Modified: 2019-04-26 05:58:28
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