Attachment TOWBOY-R_Uplink_OET6

This document pretains to SES-LIC-20090803-00947 for License on a Satellite Earth Station filing.

IBFS_SESLIC2009080300947_725894

FCC OET-65 RF Exposure Study - Satellite Uplink Facility NBC TOWBOY R (has no current FCC License) Antenna Vendor: AVL Antenna Size: 1.6m Amplifier Make/Model: MCL MT2300 Amplifier Max Power: 200w. FCC Maximum Permissible Exposure Levels Source Units Notes Public/uncontrolled area exposure limit 47CFR §1.1310 1 mW/cm 2 Occupational/controlled area exposure limit 47CFR §1.1310 5 mW/cm 2 Input Data Antenna Diameter datasheet 160.0 cm 2 Antenna surface area calculated 20106 cm Feed flange diameter measured 6.350 cm WR-75 2 Feed flange area calculated 32 cm Frequency (entry) 14000 MHz Wavelength (speed of light = 299,792,458 m/s) calculated 2.141 cm Transmit power at flange datasheet 200000 milliwatts Antenna gain datasheet 45.4 dBi Antenna gain factor calculated 34674 Height of base of antenna above ground measured 2.8651 m Height of center of antenna above ground measured 3.6576 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 2 Maximum power density at antenna surface Eq. 11 Pg 27 39.78873577 mW/cm Potential Hazard Potential Hazard 2 Power density at feed flange Eq. 11 Pg 27 25261.12309 mW/cm Potential Hazard Potential Hazard Extent of near-field Eq. 12 Pg 27 2989 cm 2 Maximum new-field power density Eq. 13 Pg 28 25.03835335 mW/cm Potential Hazard Potential Hazard Aperture efficiency Eq. 14 Pg 28 0.629282456 Distance to beginning of far-field Eq. 16 Pg 29 7172.962303 cm 2 Power density at end of the transition regiion Eq. 17 Pg 29 10.43264723 mW/cm Potential Hazard Potential Hazard 2 Maximum far-field power density Eq. 18 Pg 29 10.726 mW/cm Potential Hazard Potential Hazard Main Beam Far-field region safe exposure distances Minimum distance for public/uncontrolled exposure Eq. 18 Pg 29 234.9146307 meters Height at minimum antenna elevation angle calculated 24.13175912 meters Horizontal distance calculated 234.0207096 meters Minimum distance for occupational/controlled exposure Eq. 18 Pg 29 105.0570166 meters Height at minimum antenna elevation angle calculated 12.81392231 meters Horizontal distance calculated 104.657243 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 2 Maximum off-axis near field power density Eq. 13 Pg 28 0.2504 mW/cm Below FCC MPE Below FCC MPE Public/uncontrolled exposure off-axis distance Diam/or Eq 17 1.6 meters Occupatonal/controlled exposure off-axis distance Diam/or Eq 17 1.6 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 ** 71.72962303 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. Parameters Transmitter output 200 watts Waveguide loss N/A Power at flange 200 Antenna AVL 1.6m Maximum EIRP per carrier 68.41029996 dBk Emission Type 36M0G7W (1 carrier Digital) Bandwidth 36000 kHz Maximum EIRP Density per carrier 28.86787486 dBW/4kHz


Document Created: 2009-07-24 18:06:16
Document Modified: 2009-07-24 18:06:16
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