Attachment RadHaz Exhibit

This document pretains to SES-MOD-INTR2019-01382 for Modification on a Satellite Earth Station filing.

IBFS_SESMODINTR201901382_1677109

RADIATION HAZARD REPORT EXHIBIT Contains Radiation Hazard Study Reports for: 4.8 Meter Ku—band Antenna (SAPA 08) 4.6 Meter Ku—band Antenna (SAPA 10) 7.3 Meter Ku—band Antenna (SAPA 19 & SAPA 40)

Exhibit Radiation Hazard Report Page 1 of 5 Analysis of Non—lonizing Radiation for a 4.8—Meter Earth Station System This report analyzes the non—lonizing radiation levels for a 4.8—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. 65 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 tiers 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 environment are shown in Table 1. The General Population/Uncontrolled 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/Controlled 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 Density {mW/icm*) 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 {mWicm*) 30—300 1.0 300—1500 Frequency (MHz)*(4.0/1200) 1500—100,000 5.0 Table 3. Formulas and Parameters Used for Determining Power Flux Densities Parameter Symbol Formula Value Units Antenna Diameter D Input 4.8 m Antenna Surface Area Asurtace 1D*/ 4 18.10 m* Subreflector Diameter Dsr Input 35.6 cm Area of Subreflector Asr x D., 4 995.38 cm* Frequency F Input 14250 MHz Wavelength A 300 /F 0.021053 m Transmit Power P Input 400.00 W Antenna Gain (dBi) Ges Input 55.2 dBi Antenna Gain (factor) 6 19c 331131.1 n/a Pi I Constant 3.1415927 na Antenna Efficiency n GRI(CD®) 0.65 n/a

Exhibit 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) = 656.6 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 1 Ry") (2) = 24.445 Wim?* = 2.445 mWicm* 2. Near Field Calculation Power flux density is considered to be at a maximum value throughout the entire length of the defined Near Field region. The region is contained within a cylindrical volume having the same diameter as the antenna. Past the boundary of the Near Field 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 Ry = D/ (42) (3) = 273.6 m The maximum power density in the Near Field can be determined from the following equation: Near Field Power Density Sir = 16.0 1 P / (1 D) (4) = 57.066 W/m" = 5.707 mWicm* 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 density decreases inversely with distance in the Transition region, the power density decreases inversely with the square of the distance in the Far Field region. The maximum power density in the Transition region will not exceed 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 S = SRa/R (5) = 5.707 mWicm*

Exhibit Radiation Hazard Report Page 3 of 5 4. Region between the Main Reflector and the Subreflector Transmissions from the feed assembly are directed toward the subreflector surface, and are reflected back toward the main reflector. The most common feed assemblies are waveguide flanges, horns or subreflectors. The energy between the subreflector and the reflector surfaces can be calculated by determining the power density at the subreflector surface. This can be determined from the following equation: Power Density at the Subreflector Ss, = 4000 P / Ag, (6) = 1607.423 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 subreflector. The area is now the area of the main reflector aperture and can be determined from the following equation: Power Density at the Main Reflector Surface Ssurtace Z4 P / Asurtace (7) = 88.419 W/m* = 8.842 mW/cm* 6. Region between the Main Reflector and the Ground Assuming uniform illumination 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 / Asurface (8) = 22.105 W/m* = 2.210 mW/cm*

Exhibit Radiation Hazard Report Page 4 of 5 7. Summary of Calculations Table 4. Summary of Expected Radiation levels for Uncontrolied Environment Calculated Maximum Radiation Power Density Level Region {mWicm‘) Hazard Assessment 1. Far Field (Ry = 656.6 m) S¢ 2.445 Potential Hazard 2. Near Field (R,,; = 273.6 m) Sn 5.707 Potential Hazard 3. Transition Region (Ry < R, < Ry) S, 5.707 Potential Hazard 4. Between Main Reflector and Ssr 1607.423 Potential Hazard Subreflector 5. Main Reflector Ssurface 8.842 Potential Hazard 6. Between Main Reflector and Ground S; 2.210 Potential Hazard Table 5. Summary of Expected Radiation levels for Controlled Environment Calculated Maximum Radiation Power Density Region Level {mW/cm*) Hazard Assessment 1. Far Field (Ry = 656.6 m) Sr 2.445 Satisfies FCC MPE 2. Near Field (R; = 273.6 m) Sn 5.707 Potential Hazard 3. Transition Region (Ry < R,< R;) S 5.707 Potential Hazard 4. Between Main Reflector and Ss 1607.423 Potential Hazard Subreflector 5. Main Reflector Ssurtace 8.842 Potential Hazard 6. Between Main Reflector and Ground S; 2.210 Satisfies FCC MPE It is the applicant‘s responsibility to ensure that the public and operational personnel are not exposed to harmful levels of radiation.

Exhibit Radiation Hazard Report Page 5 of 5 8. Conclusions Based upon the above analysis, it is concluded that harmful levels of radiation may exist in those regions noted for the Uncontrolled (Table 4) and Controlied (Table 5) Environments. The antenna will be installed at Astrium Services Government‘s teleport facility in Southbury, Connecticut. The teleport is a gated and fenced facility with secured access in and around the proposed antenna. The earth station will be marked with the standard radiation hazard warnings, as well as the area in the vicinity of the earth station to inform those in the general population, who might be working or otherwise present in or near the direct path of the main beam. The applicant will ensure that the main beam of the antenna will be pointed at least one diameter away from any building, or other obstacles in those areas that exceed the MPE levels. Since one diameter removed from the center of the main beam the levels are down at least 20 dB, or by a factor of 100, these potential hazards do not exist for either the public, or for earth station personnel. Finally, the earth station‘s operating personnel will not have access to areas that exceed the MPE levels, while the earth station is in operation. The transmitter will be turned off during periods of maintenance, so that the MPE standard of 5.0 mw/cm**2 will be complied with for those regions in close proximity to the main reflector, which could be occupied by operating personnel. The applicant agrees to abide by the conditions specified in Condition 5208 provided below: Condition 5208 — The licensee shall take all necessary measures to ensure that the antenna does not create potential exposure ofhumans to radiofrequency radiation in excess ofthe FCC exposure limits defined in 47 CFR 1.1307(b) and 1.1310 wherever such exposures might occur. Measures must be taken to ensure compliance with limitsfor both occupational/controlled exposure andfor general population/uncontrolled exposure, as defined in these rule sections. Compliance can be accomplished in most cases by appropriate restrictions such asfencing. Requirementsfor restrictions can be determined by predictions based on calculations, modeling or byfield measurements. The FCC‘s OET Bulletin 65 (available on—line at www.fcc.gov/oet/rfsafety) provides information on predicting exposure levels and on methodsfor ensuring compliance, including the use of warning and alerting signs and protective equipmentfor worker.

ANALYSTIS OF NON—IONIZING RADIATION FOR A 4.6 METEKR EARTH STATION This report analyzes the non—ionizing radiation levels for a 4.6 meter earth station. The Office of Engineering and Technology Bulletin, No. 65, Edition 97—01, specifies that there are two separate tiers of exposure limits that are dependent on the situation in which exposure takes place and/or the status of the individuals who are subject to the exposure. The Maximum Permissible Exposure {(MPE} limit for persons in a Uncontrolled/Public environment to non—ionizing radiation over a thirty minute period is a power density equal to 1 mW/cm**2 (one milliwatts per centimeter squared). The Maximum Permissible Exposure (MPE) limit for persons in a Controlled/Occupational environment to non—ionizing radiation over a six minute period is a power density equal to 5 mW/cm**2 (five milliwatts per centimeter squared). It is the purpose of this report to determine the power flux densities of the earth station in the far field, near field, transition region, between the subreflector and main reflector surface, at the main reflector surface, and between the antenna edge and the ground. The following parameters were used to calculate the various power flux densities for this earth station: Antenna Diameter, (D) 4.6 meters Antenna surface area, (Sa) pi (D*+*2) / 4 16 .62 m* *2 11 1 Subreflector Diameter, (Ds) 61.0 cm Area of Subreflector, (As) pi (Ds**2)1/ 4 2922.47 cm**2 Wavelength at 14.2500 CHz, (lambda) = 0.021 meters Transmit Power at Flange, (P) =— 358.50 Watts Antenna Gain, (Ges) Antenna Gain at = 3.311E+05 14.2500 GHz = 55.2 dBi Converted to a Power Ratio Given By: AntiLog (55.2 / 10) pi, (pi) 3.1415927 Antenna aperture efficiency, (n) 0.55 1. Far Field Calculations The distance to the beginning of the far field region can be found by the following equation: (1) Distance to the Far Field Region, (RE) d.60(D**2) / lambda 603.1 m (1) Federal Communications Commission, Office of Engineering & Technology, Bulletin No. 65, pp. 17 & 18.

The maximum main beam power density in the far field can be calculated as follows: (2) On—Axis Power Density in the Far Field, (WE) = (CES) (») T(pi) (RE**2) 25.98 wW/m**2 i 2.60 mW/cm**2 2. Near Field Calculation Power flux density is considered to be at a maximum value throughout the entire length of the defined region. The region is contained within a cylindrical volume having the same diameter as the antenna. Past the extent of the near field region the power density decreases with distance from the transmitting antenna. The distance to the end of the near field can be determined by the following equation: (1) Extent of near field, (Rn) D*+*2 / 4(lambda) = 251.27 m The maximum power density in the near field is determined by: (1) Near field Power Density, (Wn) 16.0(n)}? mW/om**2 pl‘D*'i; 47.46 W/m**2 4.75 mW/cm**2 3. Transition Region Calculations The transition region is located between the near and far field regions. As stated above, the power density begins to decrease with distance in the transition region. While the power density decreases inversely with distance in the transition region, the power density decreases inversely with the square of the distance in the far field region. The maximum power Gdensity in the transition region will not exceed that calculated for the near field region. The power density in the near field region, as shown above, will not exceed 4.75 mW/cm**2. rnommmmmmscmeres

4. Region Between Main Reflector and Subrefiector Transmissions from the feed horn are directed toward the subreflector surface, and are reflected back toward the main reflector. The energy between the subreflector and reflector surfaces can be calculated by determining the power density at the subreflector surface. This can be accomplished as follows: Power Density at Subreflector, (Ws) 4(P) / As 490.68 mW/cm**2 5. Main Reflector Region The power densitg in the main reflector region is determined in the same manner as the power density at the subreflector, above, but the area is now the area of the main reflector aperture: Power Density at Main Reflector Surface, (Wm) (4 (P) / Sa) 86.29 W/m**2 8.63 mW/cm**2 it 6. Region between Main Reflector and Ground Assuming uniform illumination of the reflector surface, the power density between the antenna and ground can be calculated as follows: Power density between Reflector and Ground, (Wg) | (P / Sa) % 2.16 mW/cm**2

Table 1 Summary of Expected Radiation Levels Based on (5 mW/cm**2) MPE for Controlled Environment Calculated Maximum Region Radiation Level {mW/cem**2) Hazard Assessment 1. Far Field, (Rf)= 603.1 m 2.60 SATISFIES ANSI 2. Near Field, (Rn)= 251.27 m 4.75 SATISFIES ANSI 3. Transition Region, (Rt) 4.75 SATISFIES ANSI Rn < Rt < Rf 4. Between Main Reflector 490.68 POTENTIAL HAZARD and subreflector 5. Reflector Surface 8.63 POTENTIAL EAZARD 6. Between Antenna 2.16 SATISFIES ANSI and Ground It is the applicants responsibility to ensure that the public and operational personnel are not exposed to harmful levels of radiation. romemercommemtumm:

Table 2 Summary of Expected Radiation Levels Based on (1 mW/cm**2) MPE for Uncontrolled Environment Calculated Maximum Region Radiation Level (mW/cm**2) Hazard Assessment 1. Far Field, (Rf)= 603.1 m 2.60 POTENTIAL HAZARD 2. Near Field, (Rn)= 251.27 m 4.75 POTENTIAL HAZARD 3. Transition Region, (Rt) 4 .75 POTENTIAL HAZARD Rn < Rt < Rf 4. Between Main Reflector 490 .68 POTENTIAL HAZARD and subreflector 5. Reflector Surface 8.63 POTENTIAL HAZARD 6. Between Antenna 2.16 POTENTIAL HAZARD and Ground It is the applicants responsibility to ensure that the public and operational personnel are not exposed to harmful levels of radiation.

7. Conclusions Based upon the above analysis, it is concluded that harmful levels of radiation could exist in those regions noted for the Controlled (Table 1) and Uncontrolled Environments (Table 2). The earth station facility is located in a rural area near Santa Paula, California, and is distant from any offices or buildings, which could be occupied by the public. Further, the antenna facility is surrounded by a fence, which restricts any public access. Since the facility is located in rural location, and is surrounded by a fence, which will restrict public access, and since one diameter removed from the center of main beam the levels are down at least 20 dB, or by a factor of 100, public safety, as well as operating personnel safety will be ensured. Finally, occupational expesure will be limited, and the transmitter will be turned off during periods of maintenance, so that the MPE standard of 5.0 mW/cm*2 will be complied with for those regions in close proximity to the main reflector, and subreflector, which could be occupied by opereting personnel. rmemunsemasmnnmarrremenammmensmenmmnnannnsemmome

Exhibit Radiation Hazard Report Page 1 of 5 Analysis of Non—lonizing Radiation for a 7.3—Meter Earth Station System This report analyzes the non—ionizing radiation levels for a 7.3—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. 65 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 tiers 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 environment are shown in Table 1. The General Population/Uncontrolled 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/Controlled 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 Density (mW/icm*} 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/icm?*) 30—300 1.0 300—1500 Frequency (MHz)*(4.0/1200) 1500—100,000 5.0 Table 3. Formulas and Parameters Used for Determining Power Flux Densities Parameter Symbol Formula Value Units Antenna Diameter D Input 7.3 m Antenna Surface Area Asurtace x D/ 4 41.85 m* Subreflector Diameter Dsr Input 104.2 cm Area of Subreflector Asr x Ds*/4 8527.57 cm Frequency F Input 14250 MHz Wavelength A 300 /F 0.021053 m Transmit Power P Input 750.00 W Antenna Gain (dBi) Ges Input 58.2 dBi Antenna Gain (factor) G 1Gesne 660693.4 n/a Pi x Constant 3.1415927 n/a Antenna Efficiency n GA2/GCD) 0.56 na

Exhibit 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 Re =0.60 D/A (1) =1518.8 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 x Re?) (2) = 17.095 W/m* = 1.710 mW/cm* 2. Near Field Calculation Power flux density is considered to be at a maximum value throughout the entire length of the defined Near Field region. The region is contained within a cylindrical volume having the same diameter as the antenna. Past the boundary of the Near Field 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 Ra = D* / (4 A) (3) = 632.8 m The maximum power density in the Near Field can be determined from the following equation: Near Field Power Density Sar = 16.0 n P /(z D) (4) = 39.907 W/m* = 3.991 mW/icm?* 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 density decreases inversely with distance in the Transition region, the power density decreases inversely with the square of the distance in the Far Field region. The maximum power density in the Transition region will not exceed 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 S = Sa Rau/R (5) = 3.991 mW/icm*

Exhibit Radiation Hazard Report Page 3 of 5 4. Region between the Main Reflector and the Subreflector Transmissions from the feed assembly are directed toward the subreflector surface, and are reflected back toward the main reflector. The most common feed assemblies are waveguide flanges, horns or subreflectors. The energy between the subreflector and the reflector surfaces can be calculated by determining the power density at the subreflector surface. This can be determined from the following equation: Power Density at the Subreflector Ssr = 4000 P / Asr (6) = 351.800 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 subreflector. The area is now the area of the main reflector aperture and can be determined from the following equation: Power Density at the Main Reflector Surface Ssurtace = 4 P / Asurtace (7) =71.678 W/m? =7.168 mW/cm? 6. Region between the Main Reflector and the Ground Assuming uniform illumination 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 Sg =P / Asurtace (8) = 17.919 W/im = 1.792 mWicm*

Exhibit 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 Hazard Region Level (mW/cm") Assessment 1. Far Field (Rs= 1518.8 m) Sr 1.710 Potential Hazard 2. Near Field (Ry = 632.8 m) Sar 3.991 Potential Hazard 3. Transition Region (Ru< R< Ry) St 3.991 Potential Hazard 4. Between Main Reflector and Ssr 351.800 Potential Hazard Subreflector 5. Main Reflector Ssurface 7.168 Potential Hazard 6. Between Main Reflector and Ground Sq 1.792 Potential Hazard Table 5. Summary of Expected Radiation levels for Controlled Environment Calculated Maximum Radiation Power Density Region Level {mWicm?") Hazard Assessment 1. Far Field (R«= 1518.8 m) Sr 1.710 Satisfies FCC MPE 2. Near Field (Re = 632.8 m) Sar 3.991 Satisfies FCC MPE 3. Transition Region (Ry < R;< Re) St 3.991 Satisfies FCC MPE 4. Between Main Reflector and Ssr 351.800 Potential Hazard Subreflector 5. Main Reflector Ssurface 7.168 Potential Hazard 6. Between Main Reflector and Ground Sq 1.792 Satisfies FCC MPE It is the applicant‘s responsibility to ensure that the public and operational personnel are not exposed to harmful levels 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 proposes to comply with the MPE limits by one or more of the following methods. Radiation hazard signs will be posted while this earth station is in operation. Due to the remote and secure location of the proposed earth station antenna at the Teleport, the area of operation around the antenna will be limited to those that have knowledge of the potential for radiation exposure. The applicant will ensure that no buildings or other obstacles will be in the areas that exceed the MPE levels.

Exhibit Radiation Hazard Report Page 5 of 5 Means of Compliance Controlled Areas The earth station‘s operational staff 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 The applicant agrees to abide by the conditions specified in Condition 5208 provided below: Condition 5208 — The licensee shall take all necessary measures to ensure that the antenna does not create potential exposure ofhumans to radiofrequency radiation in excess ofthe FCC exposure limits defined in 47 CFR 1.1307(b) and 1.1310 wherever such exposures might occur. Measures must be taken to ensure compliance withlimitsfor both occupational/controlled exposure andfor general population/uncontrolled exposure, as defined in these rule sections. Compliance can be accomplished in most cases by appropriate restrictions such asfencing. Requirementsfor restrictions can be determined by predictions based on calculations, modeling or byfield measurements. The FCC‘s OET Bulletin 65 (available on—line at wiw.fec.gov/oet/rfsafety) provides information on predicting exposure levels and on methodsfor ensuring compliance, including the use of warning and alerting signs and protective equipmentfor worker. 1 HEREBY CERTIFY THAT | AM THE TECHNICALLY QUALIFIED PERSON RESPONSIBLE FOR THE PREPARATION OF THE RADIATION HAZARD REPORT, AND THAT IT IS COMPLETE AND CORRECT TO THE BEST OF MY KNOWLEDGE AND BELIEF,. BY: _ (A L _ Gary K. Edwards Senior Manager COMSEARCH 19700 Janelia Farm Boulevard Ashburn, VA 20147 DATED: June 22, 2018


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