Attachment Exhibit B

This document pretains to SES-LIC-20110627-00745 for License on a Satellite Earth Station filing.

IBFS_SESLIC2011062700745_899837

EXHIBIT B Radiation Hazard Report Page 1 of 5 Analysis of Non—lonizing Radiation for a 3.8—Meter Earth Station System This report analyzes the non—lonizing radiation levels for a 8.8—meter earth station system. The analysis and calculations performed in this report comply with the methods described in the FCC Office of Engineering and Technology Bulletin, No. 85 first published In 1985 and revised in 1997 in Edition 97—01. The radiation safety limits used in the analysis are in conformance with the FCC R&O 96—326. Bulletin No. 65 and the FCC R&O specifies that there are two separate tlers of exposure limits that are dependant on the situation in which the exposure takes place and/or the status of the Individuals who are subject to the exposure. The Maximum Permissible Exposure (MPE) limits for persons in a General Population/Uncontrolled envirenment are shown in Table 1. The General Population/Unconirolled MPE is a function of transmit frequency and is for an exposure period of thirty minutes or less. The MPE limits for persons in an Occupational/Contralled environment are shown in Table 2. The Occupational MPE is a function of transmit frequency and is for an exposure period of six minutes or less, The purpose of the analysis described in this report is to determine the power flux density levels of the earth station in the far—field, near—field, transition region, between the subreflector or feed and main reflector surface, at the main reflector surface, and between the antenna edge and the ground and to compare these levels to the specified MPEs. Table 1. Limits for General Population/Uncontrolled Exposure (MPE) Frequency Range (MHz) Power Denslty (mWicm") 30—300 0.2 300—1500 Frequency (MHz)*(0.8/1200) 1500—100,000 1.0 Table 2, Limits for Occupational/Controlled Exposure (MPE}) Frequency Range (MHz) Power Density (mW/iem") 30—300 1.0 300—1500 Frequency (MHz)*(4.0/1200) 1500—100,000 5.0 Table 3. Formulas and Paramaters Used for Determining Power Flux Densities Parameter Symbol Formula Value Units Antenna Diameter D Input 3.8 m Antenna Surface Area Asurtace x D*/ 4 11.34 m FEsed Flangs Diameter Dr Inout 19.1 cm Area of Feed Flange Arg xz Dy 44 286.52 om" Frequency F Input 6175 MHz Wavelength A 300 /F 0.048583 m Transmit Power P Input $50,00 W Antenna Gain (dBi) Glss Input 46.0 dBi Antenna Gain (factor) a 19c 39810.7 na Pi i Constant 3.1415927 n/a Antenna Efficiency 1 GMIRD®) 0.66 a

Radiation Hazard Report Page 2 of 5 1. Far Field Distance Calculation The distance to the beginning of the far field can be determined from the following equation: Distance to the Far Field Region Ry =0.60 D/A (1) = 178.3 m The maximum main beam power density in the far field can be determined from the following equation: On—Axis Power Density in the Far Field S; =GP/(4 n Rfia) (2) i = 34.865 W/m* = 3.487 mW/cm* i 2. Near Field Calculation Power flux density is considered to be at a maximum value throughout the entire length of the ; defined Near Fleld region. The region is contained within a cylindrical volume having the same | diameter as the antenna. Past the boundary of the Near Fleld region, the power density from the \ antenna decreases linearly with respect to Increasing distance. The distance to the end of the Near Field can be determined from the following equation: Extent of the Near Field Rar = D* 7 (4 A) (8) i . = 74.3 m bo, The maximum power density in the Near Field can be determined from the following equation: bol Near Fleld Power Density Sy = 16.0 71 P / (1 D°) (4) bol = 81.390 W/m* ‘ =8.139 mWiem* 3. Transition Region Calculation The Transition region is located between the Near and Far Field regions. The power density begins to decrease linearly with increasing distance in the Transition region. While the power censity decreases inversely with distance in the Trangition region, the power density decreases inversely with the square of the distancein the Far Fleld region. The maximum power density in the Transition region will not excesd that calculated for the Near Field region. The power density calculated in Section 1 is the highest power density the antenna can produce in any of the regions away from the antenna. The power density at a distance R, can be determined from the following equation: Transition Region Power Density $ = Sn BuZ P (5) = 8139 mW/cm®

Radiation Hazard Report Page 8 of 5 4. Region between the Feed Assembly and the Antenna Reflector Transmissions from the feed assembly are directed toward the antenna reflector surface, and are confined within a conical shape defined by the type of feed assembly. The most common feed assemblies are wavegulde flanges, homs or subreflectors. The energy between the feed assembly and reflector surface can be calculated by determining the power density at the feed assembly surface. This can be determined from the following equation: Power Density at the Feed Flange Sy =4000 P / Arg (6) = 4886.202 mW/cm* 5. Main Reflector Region The power density in the main reflector is determined in the same manner as the power density at the feed assembly. The area is now the area of the reflector aperture and can be determined from the following equation: Power Density at the Reflector Surface Ssurtace =4 P / Asurtace (7) = 128444 W/m" = 12844 mW/iem" 6. Region between the Reflector and the Ground Assuming uniform lllumination of the reflector surface, the power density between the antenna and the ground can be determined from the following equation: Power Density between Reflector and Ground Sy =P / Asurtace (8) =80.861 W/im* = 8.086 mW/em*

Radiation Hazard Report Page 4 of 5 7. Summary of Calculations Table 4, Summary of Expected Radiation levels for Uncontrolled Environment Calculated Maximum Radiation Power Density Level _Region (mWicm*) Hazard Assessment 1. Far Field (ARg= 178.3 m} Sy 8.487 Potential Hazard 2, Neat Field (Ry «74.3 m) Sy 8.139 Potential Hazard 3. Transition Region (Ry < R< Ry) $ 8.139 Potentlal Hazard 4. Between Feed Assembly and Ste 4886.202 Potential Hazard Antenna Reflector 5. Main Reflector Scutece __12.344 Potential Hazard 6. Between Reflector and Ground S 3.086 Potential Hazard Table 5. Summary of Expected Radiation levels for Controlled Environment Calculated Maximum Radlation Power Density _Region Level (mW/cm) Hazard Assessment 1. Far Field (Ry= 178.3 m) Sr 8487 Satisties FCC MPE 2. Near Field (R,; = 74.3 m) Su 8.189 Potential Hazard 3. Transition Region (Ry < R; < Ry) S, 8139 Potential Hazard 4. Between Feed Assembly and S, 4886.202 Potential Hazard Antenna Reflector 5. Main Reflector Scutace 12344 Potential Hazard 6. Between Reflector and Ground S. . 3.086 Satisfies FCC MPE _ it is the applicant‘s responsibility to ensure that the public and operational personnel are not exposed to harmful levals of radiation. ' 8. Conclusions Based on the above analysis it is concluded that the FCC MPE guidelines have been exceeded (or met) in the regions of Table 4 and 5. The applicant propeses to comply with the MPE limits by one or motre of the fellowing methods. Means of Compliance Uncontrolled Areas This antenna will be located on the rooftop of a building. The rooftop will be not be accessible by the general public. The rocftop area will be sufficient to prohiblt the general public from having access the areas that exceed the MPE limits Since one diamater removed from the main beam of the antenna or 14 diameter removed from the edgs of the antenra the RF levels are reduced by a factor of 100 or 20 dB. None of the areas exceeding the MPE levels will be accassible by the general public.

Radiation Hazard Report Page 5 of 5 Radiation hazard signs will be posted while this earth station is in operation. The applicant will ensure that no buildings or other obstacles will be in the areas that exceed the MPE lavels. Means of Compliance Controlled Areas The earth station‘s operational personnel will not have access to the areas that exceed the MPE levels while the earth station is in operation. The transmitters will be turned off during antenna maintenance. Prepared By Timothy 0. Crutcher Frequency Planner COMSEARCH 19700 Janelia Farm Boulevard Ashbum, VA 20147 DATED: June.10, 2011 | 1 i i I I


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