Attachment Ex 9 RadHaz Reports

This document pretains to SES-MOD-20160630-00625 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2016063000625_1138588

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0CEAr) TARx 7—3600—c. Exh xhibit Radiation Hazard Report Page 1 of 5 Analysis of Non—lonizing Radiation for a 2.2—Meter Earth Station System This report analyzes the non—ionizing radiation levels for a 2.2—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/cm") 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/cm") 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 22 m Antenna Surface Area Asurtgce rD*/ 4 3.80 m* Subreflector Diameter Ds Input 44.0 cm Area of Subreflector Asr x Ds "/4 1520.53 cm* Frequency F Input 6175 MHz Wavelength A 300 / F 0.048583 m Transmit Power P Input 170.20 W Antenna Gain (dBi) Os Input 39.2 dBi Antenna Gain (factor) G 1p—*"* 8317.6 n/a Pi I Constant 3.1415927 n/a Antenna Efficiency n G*/(R_D®) 0.41 n/a

2oL 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 R, =0.60 D/¥ (1) = 59.8 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 Rflz) (2) = 31.530 W/m* =3.153 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 Ry = D*/ (4 ¥) (3) = 24.9 m The maximum power density in the Near Field can be determined from the following equation: Near Field Power Density Sy =16.0 1P / (1 D) (4) = 73.605 W/m* =7.361 mW/cm* 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 Rn/Rt (5) =7.361 mW/cm"

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 / Ag (6) = 447.738 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 / Asur'ace (7) 179.095 W/m = 17.910 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/Asurses (8) = 44.774 W/m* = 4.477 mW/icm"

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 Level Region (mW/icm") Hazard Assessment 1. Far Field (Ry = 59.8 m) Sn 3.153 Potential Hazard 2. Near Field (R,; = 24.9 m) Sy 7.361 Potential Hazard 3. Transition Region (Ry < R; < R;) S; 7.361 Potential Hazard 4. Between Main Reflector and Ss 447.738 Potential Hazard Subreflector 5. Main Reflector Scurtace 17.910 Potential Hazard 6. Between Main Reflector and Ground 9; 4.477 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 = 59.8 m) Sr 3.153 Satisfies FCC MPE 2. Near Field (R,, = 24.9 m) Sn 7.361 Potential Hazard 3. Transition Region (Ry< R:< R;) S, 7.361 Potential Hazard 4. Between Main Reflector and 9; 447.738 Potential Hazard Subreflector 5. Main Reflector Scurtace 17.910 Potential Hazard 6. Between Main Reflector and Ground Sq 4.477 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. The earth station will be mounted aboard a ship, and it is recommended that the lower edge of the antenna should be at least 2 meters above the deck. If this is not the case, additional procedures will be instituted to insure the safety of the Public in the vicinity of the antenna. The applicant will ensure that the main beam of the antenna will be pointed at least one diameter away from any buildings, 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, public safety will be ensured.

Exhibit Radiation Hazard Report Page 5 of 5 The earth station will 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 may be working, or otherwise present on the ship, and in or near, the main beam of the antenna. Finally, occupational exposure 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 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 of the 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 limits for 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 as fencing. Requirements for restrictions can be determined by predictions based on calculations, modeling or by field measurements. The FCC‘s OET Bulletin 65 (available on—line at www.fcc.gov/oet/rfsafety) provides information on predicting exposure levels and on methods for ensuring compliance, including the use of warning and alerting signs and protective equipmentfor worker.

COA<€An) TRx 7—300—u4 EME XNIDI Radiation Hazard Report Page 1 of 5 Analysis of Non—lonizing Radiation for a 2.1—Meter Earth Station System This report analyzes the non—ionizing radiation levels for a 2.1—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/cm") 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/cm*) 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 2.1 m Antenna Surface Area Asurtace 1D*/ 4 3.46 m* Subreflector Diameter Dsr Input 22.0 cm Area of Subreflector Asr x Ds °/4 380.13 cm* Frequency F Input 14250 MHz Wavelength A 300 / F 0.021053 m Transmit Power P Input 77.60 W Antenna Gain (dBi) CGles Input 46.6 dBi Antenna Gain (factor) G 19°" 45708.8 n/a Pi T Constant 3.1415927 n/a Antenna Efficiency n GA/(R_D") 0.47 n/a

2l Exhibit B 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 R; =0.60 D/A¥ (1) =125.7 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 R,") (2) = 17.868 W/m* = 1.787 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 Ry = D*/ (4 2) (3) = 52.4 m The maximum power density in the Near Field can be determined from the following equation: Near Field Power Density Si =16.0 1 P / (1 D°) (4) = 41.713 W/m* =4.171 mW/cm* 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 =Si Ru/Rt (5) =4.171 mW/cm"

Exhibit B 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) = 816.557 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 Ssuace *A P / Asurace (7) = 89.618 W/m* = 8.962 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) = 22.404 W/m* = 2.240 mW/cm*

2. Exhibit B 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 (mW/icm") Hazard Assessment 1. Far Field (Ry= 125.7 m) Sr 1.787 Potential Hazard 2. Near Field (R,, = 52.4 m) Sn 4.171 Potential Hazard 3. Transition Region (Ry < R; < R;) S 4.171 Potential Hazard 4. Between Main Reflector and Sy 816.557 Potential Hazard Subreflector 5. Main Reflector Scuraes 8.962 Potential Hazard 6. Between Main Reflector and Ground 8. 2.240 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= 125.7 m) Sr 1.787 Satisfies FCC MPE 2. Near Field (R,, = 52.4 m) Sn 4.171 Satisfies FCC MPE 3. Transition Region (Ry< R;< R;) St 4.171 Satisfies FCC MPE 4. Between Main Reflector and 8: 816.557 Potential Hazard Subreflector 5. Main Reflector Scurface 8.962 Potential Hazard 6. Between Main Reflector and Ground Sq 2.240 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 upon the above analysis, it is concluded that harmful levels of radiation may exist in those regions noted for the Uncontrolled (Table 4) and Controlled (Table 5) environments. The earth station will be mounted aboard a ship, and it is recommended that the lower edge of the antenna should be at least 2 meters above the deck. If this is not the case, additional procedures will be instituted to insure the safety of the Public in the vicinity of the antenna. The applicant will ensure that the main beam of the antenna will be pointed at least one diameter away from any buildings, 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, public safety will be ensured.

Exhibit B Radiation Hazard Report Page 5 of 5 The earth station will 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 may be working, or otherwise present on the ship, and in or near, the main beam of the antenna. Finally, occupational exposure 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 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 of humans to radiofrequency radiation in excess of the 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 limits for 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 as fencing. Requirements for restrictions can be determined by predictions based on calculations, modeling or by field measurements. The FCC‘s OET Bulletin 65 (available on—line at www.fcc.gov/oet/rfsafety) provides information on predicting exposure levels and on methods for ensuring compliance, including the use of warning and alerting signs and protective equipmentfor worker.

EPMEAT 44'7/0 3 mkK1]—KU Exhibit B Radiation Hazard Report Page 1 of 5 Analysis of Non—lonizing Radiation for a 1.2—Meter Earth Station System This report analyzes the non—ionizing radiation levels for a 1.2—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/cm") 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 1.2 m Antenna Surface Area Asurtace x D*/ 4 118 m* Subreflector Diameter Dsr Input 21.0 cm Area of Subreflector Asr x Ds, /4 346.36 cm* Frequency F Input 14250 MHz Wavelength A 300 /F 0.021053 m Transmit Power P Input 83.20 W Antenna Gain (dBi) es Input 42.6 dBi Antenna Gain (factor) G 1 pCes" 18197.0 n/a Pi I Constant 3.1415927 n/a Antenna Efficiency n Gr*/(rD") 0.57 n/a

Exhibit B 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 R; =0.60 D/A (1) =41.0 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 R,") (2) = 71.532 W/m* = 7.153 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 Ry = D* / (4 A) (3) =17.1 m The maximum power density in the Near Field can be determined from the following equation: Near Field Power Density Sa =16.0 1 P / (1 D) (4) = 166.987 W/m* = 16.699 mW/cm* 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 =Su Ru/Rt (5) = 16.699 mW/cm*

Exhibit B 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 / Agr (6) = 960.848 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 Ssmase = 4P ! Auurses (7) = 294.260 W/m* = 29.426 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 / Asurtace (8) =73.565 W/m* = 7.356 mW/cm*

20. Exhibit B 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 (mW/cm?) Hazard Assessment 1. Far Field (Ry=41.0 m) S« 7158 Potential Hazard 2. Near Field (Ry=17.1 m) Sat 16.699 Potential Hazard 3. Transition Region (Ry < R;< R;) S 16.699 Potential Hazard 4. Between Main Reflector and Ssr 960.848 Potential Hazard Subreflector 5. Main Reflector Scurtace 29426 Potential Hazard 6. Between Main Reflector and Ground Sq 7.356 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= 41.0 m) Sn 7.158 Potential Hazard 2. Near Field (Ry=17.1 m) Sn 16.699 Potential Hazard 3. Transition Region (Ry < R;< R;) St 16.699 Potential Hazard 4. Between Main Reflector and S 960.848 Potential Hazard Subreflector 5. Main Reflector Scurtace 29426 Potential Hazard 6. Between Main Reflector and Ground S 7.356 Potential Hazard 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 upon the above analysis, it is concluded that harmful levels of radiation may exist in those regions noted for the Uncontrolled (Table 4) and Controlled (Table 5) environments. The earth station will be mounted aboard a ship, and it is recommended that the lower edge of the antenna should be at least 2 meters above the deck. If this is not the case, additional procedures will be instituted to insure the safety of the Public in the vicinity of the antenna. The applicant will ensure that the main beam of the antenna will be pointed at least one diameter away from any buildings, 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, public safety will be ensured.

2. Exhibit B Radiation Hazard Report Page 5 of 5 The earth station will 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 may be working, or otherwise present on the ship, and in or near, the main beam of the antenna. Finally, occupational exposure 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 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 of humans to radiofrequency radiation in excess of the 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 limits for 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 as fencing. Requirements for restrictions can be determined by predictions based on calculations, modeling or by field measurements. The FCC‘s OET Bulletin 65 (available on—line at www.fcc.gov/oet/rfsafety) provides information on predicting exposure levels and on methods for ensuring compliance, including the use of warning and alerting signs and protective equipmentfor worker.

OLEAN Thx 4—500 k Radiation Hazard Report Page 1 of 5 Analysis of Non—lonizing Radiation for a 1.2—Meter Earth Station System This report analyzes the non—ionizing radiation levels for a 1.2—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/cm*) 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/cm‘") 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 1.2 m Antenna Surface Area Aspsss rD*/ 4 1.13 m Subreflector Diameter Ds Input 21.0 cm Area of Subreflector Asr x Ds, °/4 346.36 om" Frequency F Input 14250 MHz Wavelength A 300 /F 0.021053 m Transmit Power P Input 83.20 W Antenna Gain (dBi) Un Input 42.6 dBi Antenna Gain (factor) G iAe 18197.0 n/a Pi I Constant 3.1415927 n/a Antenna Efficiency n GA*/(R_D") 0.57 n/a

2. Exhibit B 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 R; =0.60 D/A (1) = 41.0 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 Sr GP/(4 1R;*) (2) 71.532 W/m 7.153 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 Ry = D°/ (4 ) (3) =17.1 m The maximum power density in the Near Field can be determined from the following equation: Near Field Power Density Sa = 16.0 n P / (x D°) (4) = 166.987 W/m = 16.699 mW/cm* 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 = Sn Rn/Rt (5) = 16.699 mW/cm*

. Exhibit B 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 / Ag (6) = 960.848 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) = 294.260 W/m* = 29.426 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 / Asutsce (8) = 73.565 W/m* =7.356 mW/cm*

Exhibit B 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 (mW/cm") Hazard Assessment 1. Far Field (R;= 41.0 m) Sn 7153 Potential Hazard 2. Near Field (R; = 17.1 m) Sn 16.699 Potential Hazard 3. Transition Region (Ry < R,< R;) S 16.699 Potential Hazard 4. Between Main Reflector and S; 960.848 Potential Hazard Subreflector 5. Main Reflector Scurtace 29.426 Potential Hazard 6. Between Main Reflector and Ground S; 7.956 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 =41.0 m) S« 7.153 Potential Hazard 2. Near Field (Ry=17.1 m) Sn 16.699 Potential Hazard 3. Transition Region (Ry < R; < R;) S 16.699 Potential Hazard 4. Between Main Reflector and § 960.848 Potential Hazard Subreflector 5. Main Reflector Scurtace 29.426 Potential Hazard 6. Between Main Reflector and Ground 2: 7.356 Potential Hazard 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 upon the above analysis, it is concluded that harmful levels of radiation may exist in those regions noted for the Uncontrolled (Table 4) and Controlled (Table 5) environments. The earth station will be mounted aboard a ship, and it is recommended that the lower edge of the antenna should be at least 2 meters above the deck. If this is not the case, additional procedures will be instituted to insure the safety of the Public in the vicinity of the antenna. The applicant will ensure that the main beam of the antenna will be pointed at least one diameter away from any buildings, 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, public safety will be ensured.

Exhibit B Radiation Hazard Report Page 5 of 5 The earth station will 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 may be working, or otherwise present on the ship, and in or near, the main beam of the antenna. Finally, occupational exposure 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 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 of humans to radiofrequency radiation in excess of the 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 limits for 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 as fencing. Requirements for restrictions can be determined by predictions based on calculations, modeling or by field measurements. The FCC‘s OET Bulletin 65 (available on—line at www.fee.gov/oet/rfsafety) provides information on predicting exposure levels and on methods for ensuring compliance, including the use of warning and alerting signs and protective equipmentfor worker.

LC+t+el) ;een‘ vé‘}/\/ég & Radiation Hazard Report Page 1 of 5 Analysis of Non—lonizing Radiation for a 0.65—Meter Earth Station System This report analyzes the non—ionizing radiation levels for a 0.65—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/cm") 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/cm") 30—300 1.0 300—1500 Frequency (MHz)*(4.0/1200) 1500—100,000 50 Table 3. Formulas and Parameters Used for Determining Power Flux Densities Parameter Symbol Formula Value Units Antenna Diameter D Input 0.65 m Antenna Surface Area Asurtace xD*/ 4 0.33 m* Subreflector Diameter Dsr Input 7.0 cm Area of Subreflector Asr x Ds "/4 38.48 cm* Frequency F Input 14250 MHz Wavelength A 300 /F 0.021053 m Transmit Power P Input 11.60 W Antenna Gain (dBi) Cleg Input 38.0 dBi Antenna Gain (factor) G gpe=* 6309.6 n/a Pi x Constant 3.1415927 n/a Antenna Efficiency n Gr*/(R_D") 0.67 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 R; =0.60 D/A (1) = 12.0 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 R,") (2) = 40.170 W/m* = 4.017 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 Ry = D/ (4 ) (3) = 5.0 m The maximum power density in the Near Field can be determined from the following equation: Near Field Power Density Sa =16.0 1P / (1 D) (4) = 93.775 W/m* = 9.378 mW/cm* 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 =Si Ru/R (5) = 9.378 mW/cm"

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 / Ag (6) = 1205.680 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 Segrage i= 4 P J Asgriges (7) = 139.830 W/m* = 13.983 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 S P/ Asur’ace (8) 34.958 W/m* = 3.496 mW/cm*

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 Level Region (mW/cm?) Hazard Assessment 1. Far Field (Ry= 12.0 m) Sr 4.017 Potential Hazard 2. Near Field (R, = 5.0 m) Sy 9.378 Potential Hazard 3. Transition Region (Ry < R; < R;) S 9.378 Potential Hazard 4. Between Main Reflector and Ss 1205.680 Potential Hazard Subreflector 5. Main Reflector Scurtace 19.988 Potential Hazard 6. Between Main Reflector and Ground S 3.496 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= 12.0 m) S« 4.017 Satisfies FCC MPE 2. Near Field (R,, = 5.0 m) Sy 9.378 Potential Hazard 3. Transition Region (Ry< R;< R;) S 9.378 Potential Hazard 4. Between Main Reflector and 85 1205.680 Potential Hazard Subreflector 5. Main Reflector Ssnfae 19.983 Potential Hazard 6. Between Main Reflector and Ground Sq 3.496 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. The earth station will be mounted aboard a ship, and it is recommended that the lower edge of the antenna should be at least 2 meters above the deck. If this is not the case, additional procedures will be instituted to insure the safety of the Public in the vicinity of the antenna. The applicant will ensure that the main beam of the antenna will be pointed at least one diameter away from any buildings, 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, public safety will be ensured.

Exhibit Radiation Hazard Report Page 5 of 5 The earth station will 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 may be working, or otherwise present on the ship, and in or near, the main beam of the antenna. Finally, occupational exposure 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 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 of the 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 limits for 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 as fencing. Requirements for restrictions can be determined by predictions based on calculations, modeling or by field measurements. The FCC‘s OET Bulletin 65 (available on—line at www.fcc.gov/oet/rfsafety) provides information on predicting exposure levels and on methods for ensuring compliance, including the use of warning and alerting signs and protective equipmentfor worker.


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Document Modified: 2016-06-07 17:43:00
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