Attachment IBFS-HD-1B attach.pd

This document pretains to SES-LIC-20060823-01434 for License on a Satellite Earth Station filing.

IBFS_SESLIC2006082301434_521856

FCC OET-65 RF Exposure Study - Satellite Uplink Facility NBC HD-1B (has no current FCC License) Antenna Vendor: AVL MVS1200 Antenna Size: 1.2 m. Amplifier Make/Model: Anacom KU-Band SSPA Amplifier Max Power: 25 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 120.0 cm Antenna surface area calculated 11310 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 25000 milliwatts Antenna gain datasheet 43.5 dBi Antenna gain factor calculated 22387 Height of base of antenna above ground measured 4.145 m Height of center of antenna above ground measured 4.745 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 8.841941283 mW/cm2 Potential Hazard Potential Hazard Power density at feed flange Eq. 11 Pg 27 3157.640386 mW/cm2 Potential Hazard Potential Hazard Extent of near-field Eq. 12 Pg 27 1696 cm Maximum new-field power density Eq. 13 Pg 28 6.274077543 mW/cm2 Potential Hazard Potential Hazard Aperture efficiency Eq. 14 Pg 28 0.709581453 Distance to beginning of far-field Eq. 16 Pg 29 4070.816218 cm Power density at end of the transition regiion Eq. 17 Pg 29 2.614198976 mW/cm2 Potential Hazard Below FCC MPE Maximum far-field power density Eq. 18 Pg 29 2.688 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 66.73675294 meters Height at minimum antenna elevation angle calculated 10.56149127 meters Horizontal distance calculated 66.48279944 meters Minimum distance for occupational/controlled exposure Eq. 18 Pg 29 29.84558323 meters Height at minimum antenna elevation angle calculated 7.346213974 meters Horizontal distance calculated 29.73201178 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 0.0627 mW/cm2 Below FCC MPE Below FCC MPE 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) 5 degree(s) Off-axis antenna gain factor OET-65 Pg 30* 28 Minimum distance for public/uncontrolled exposure Eq. 18 Pg 29 ** 40.70816218 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: 2019-04-13 09:01:19
Document Modified: 2019-04-13 09:01:19
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