Attachment IBFS-HD-1A attach.pd

This document pretains to SES-LIC-20060823-01432 for License on a Satellite Earth Station filing.

IBFS_SESLIC2006082301432_521845

FCC OET-65 RF Exposure Study - Satellite Uplink Facility NBC HD-1A (has no current FCC License) Antenna Vendor: AVL 2400K Antenna Size: 2.4 m. Amplifier Make/Model: ETM-400 Amplifier Max Power: 400 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 240.0 cm Antenna surface area calculated 45239 cm2 Feed flange diameter measured 6.350 cm WR-75 Feed flange area calculated 32 cm2 Frequency (entry) 14000 MHz Wavelength (speed of light = 299,792,458 m/s) calculated 2.141 cm Transmit power at flange datasheet 350000 milliwatts Antenna gain datasheet 49 dBi Antenna gain factor calculated 79433 Height of base of antenna above ground measured 4.145 m Height of center of antenna above ground measured 5.345 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 30.94679449 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 6725 cm Maximum new-field power density Eq. 13 Pg 28 19.8279939 mW/cm2 Potential Hazard Potential Hazard Aperture efficiency Eq. 14 Pg 28 0.640712365 Distance to beginning of far-field Eq. 16 Pg 29 16139.16518 cm Power density at end of the transition regiion Eq. 17 Pg 29 8.261664124 mW/cm2 Potential Hazard Potential Hazard Maximum far-field power density Eq. 18 Pg 29 8.494 mW/cm2 Potential Hazard Potential Hazard Main Beam Far-field region safe exposure distances Minimum distance for public/uncontrolled exposure Eq. 18 Pg 29 470.3586012 meters Height at minimum antenna elevation angle calculated 46.33945325 meters Horizontal distance calculated 468.5687447 meters Minimum distance for occupational/controlled exposure Eq. 18 Pg 29 210.3507612 meters Height at minimum antenna elevation angle calculated 23.67827683 meters Horizontal distance calculated 209.5503131 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 0.1983 mW/cm2 Below FCC MPE Below FCC MPE Public/uncontrolled exposure off-axis distance Diam/or Eq 17 2.4 meters Occupatonal/controlled exposure off-axis distance Diam/or Eq 17 2.4 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 ** 161.3916518 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 22:55:26
Document Modified: 2019-04-14 22:55:26
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