Attachment RH Analysis

This document pretains to SES-LIC-20120821-00767 for License on a Satellite Earth Station filing.

IBFS_SESLIC2012082100767_963992

FOX TELEVISION STATIONS, INC. FCC Form—312: EXHIBIT— B RF Radiation Hazard Analysis RF RADIATION HAZARD ANALYSIS Exhibit #B Page 1 of 1. Antenna Diameter, (D) = 1.35 meters / 4.42935 Feet Antenna Surface Area (Sa) = 14314 sq meters Subreflector Diameter {Ds) = 0.0000 centimeters Ku Wavelength at 14.250 GHz (LAMBDA) = 0.21038067 meters Power output of VPC Flange= 20.000 dB W Path Loss to OMT (it} = 0.6 d8 Power at OMT, (P) = 87.10 Watts Antenna Gain at 14.250GHz (G) = 44.30 dBi (2 port antenna gain) Antenna Gain given in Power Ratic: , (Ges)= 2.69£+04 Antenna Aperture Efficiency (N) = 0.650 Region Radition Level Hazard Assessment Far Field, (Rf) = 5.198 meters / 17.05 Feet 690.501 mW/em sq Potential Hazard Near Field, (Wf) = 2.166 meters / 7.106 Feet 15.820 mW/em sq Potential Hazard Transition Region {Rt) equal to or less than Ru<Rt<Rf 15.820 mW/cm sq Potential Hazard Between Main Reflector N/A (no subreflector) and Subreflector (Ws) Main Reflector Region (Wm) 12.169 mW/cm sq Potential Hazard Power Density Between Reflector 6.085 mW/cm sq Potential Hazard and Ground Far Field Off Axis (WF) 6.905 mW/cem sq Potential Hazard Near Field Off Axis (WN) 0.158 mwW/em sq Meets ANSI Requirements Conclusion: Based on the above analysis, harmful areas of Radiation do exist in the areas around the antenna and in the path of the antenna toward the satellite that it is pointed at. The Area occupied by the general public will not exceed the ANSI limit of ImW cm sq. because the antenna is mounted on top of the truck, which is at least 8 feet above the ground, and safety increases with look angles used by the Satellites in the United States on Dom. Sat. arch. The areas on the ground and behind the antenna are 100 times less power {(20dB) when at a min. of the dia. of the reflector. This is reflected in the Off Axis figures as seen above (WF) & (WN). The SNG will be marked with the standard radiation hazard warnings, and on the antenna itself. The warning signs will warn personnel to avoid the area around and in front of the reflector when the transmitter is operating. To ensure compliance with safety limits, the earth station transmitter will be turned off and marked to remain off whenever maintenance and repair personnel are required to work in the areas of potential hazard as defined in the above study. Additionally, the earth station personnel will be trained to ensure that the antenna path is clear at all times while the transmitter is in operation. The only access to the roof of the truck is a ladder that is not accessible by the general public. Note: See Exhibit #Ba for how the above calculations were made.

FOX TELEVISION STATIONS, INC. FCC Form—312: EXHIBIT— Ba Analysis of Non—ionizing Radiation Page 1 of 1. Exhibit Ba Analysis on Non—fonizing Radiation [ Antenna Diameter, (D) = D: = 1.35 meters D+*3.281= 4.429 Feet | Antenna Surface Area, (Sa) = Sais on"* _—.D%)__. Sa = 1431 sq meters ] Subreflector Diameter, (Ds) = Ds: = 0 cm Ds®.3937 0.000 inches . + Ds*Ds Area of Subreflector, (As) = Asi= T ce As= 0.000 sq meters r Center Frequency, (Cf} = Ch = 14.250 GHz ] Wavelength at (CF), (Lambda) = Lambda= 0.2103806709 meters Tansmit Power at HPA or VPC Flange, (P1) = P1= 100.00 watts P2:=log(p1)*10 P2= 20.000 dB Path Loss from HPA or VPC to OMT, (IL) = Loss: = 0.6 P3:= P2—Loss P3= 19.400 OMT Pwr in dB p= 10 ——:(3)-——- p= 87.096 OMT Pwr in watts Antenna Gain at (Cf), (Gain)= Gain:= 44.30 dBi Antenna Gain Converted to Power Ratio (Ges)= Ges:= 10 (150a|n Ges = 2.69E+04 Ratio | Antenna Aperture Efficiency, (n)= n:= 0.6500 | F . I = Rf= .60 * (D*D) Rf = 5.198 meters ar Fiald (RF) Lambda Rf*3.281= 17.054 feet * Far Field Power Density (Wf) = Wf= GestP * .1 WE = 690.501 mw sq em 4* mo* (RF*RF) Near Field (Rn) = Rn= (D*D) Rn= 2.166 meters 4*Lambda Rf*3.281= 7.106 feet *n# Near Field Power Density (Wn) = Wn= — 16in‘P * 1 Wn = 15.820 mw sq cm T‘ (D*D) mw sq cm Transition Region (Rt) = Rt= Wn*l Rt= 15.820 (Equal to or less than} * Pwr Density at Sub Reflector (Ws) = Ws= 2°P *1000 Ws= N/A As Main Reflector Region Pwr Density (Wm) = Wms + *4 W= 12.169 mw sq cm a Pwr Density between main reflector and we= P *4 we = 6.o8s mw sq cm ground (We) = Sa [ _ Far Field Off Axis (WF) = _WF:= Wf*.01 WE = 6.905 mw sq cm J | Near Field Off Axis (WN) = WN:= Wn*.01 WN= 0.158 mw sq cm |


Document Created: 2012-08-20 17:07:21
Document Modified: 2012-08-20 17:07:21
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