Attachment RAD HAZ

This document pretains to SES-LIC-20110726-00870 for License on a Satellite Earth Station filing.

IBFS_SESLIC2011072600870_907854

EXHIBIT A1 - ANALYSIS OF NON-IONIZING RADIATION, 1.8 m Ku HARMFUL LEVELS OF RADIATION WILL NOT EXIST IN REGIONS NORMALLY OCCUPIED BY PERSONNEL. CRITERIA: ANSI SPECIFICATIONS REQUIRE THAT PERSONNEL NOT BE 2 EXPOSED TO LEVELS OF NON-IONIZING RADIATION EXCEEDING 5 mW / cm . THE FOLLOWING ANALYSES SUPPORT THIS DETERMINATION: FAR FIELD ANALYSIS: ANTENNA DIAMETER = 1.8 Meters ANTENNA GAIN = 47.0 dBi (lin 50,119) LAMBDA = 3*108 Meters / 14.25*109 Hz = 0.0210526 EFFICIENCY = h = G/(p*D/l)2 = 0.708 POWER MAX AT FLANGE = 500 Watts (27.0 dBW) DISTANCE TO FAR FIELD = 2*D2/l = 6.48 / 0.0210526 = 307.8 Meters ON-AXIS POWER DENSITY = G*P/4*p*Far Field Distance2 = 50,119 * 500 / 12.56637 * 94,741 = 21.05 W/m2 = 2.11 mW/cm2 LEVEL IS LESS THAN THE 5 mW/cm2 MAXIMUM ANSI LEVEL PERMITTED NEAR FIELD ANALYSIS (Parallel Beam Region & Transition Region): PARALLEL BEAM REGION ANALYSIS: DISTANCE TO END OF PARALLEL BEAM (CYLINDER) REGION: = DIAMETER2 / 2.5 * l = 3.24 / 0.0526315 = 61.6 Meters POWER DENSITY AT END OF PARALLEL BEAM REGION = P / CYLINDRICAL PARALLEL BEAM AREA = 500 / 3.24 = 154.32 W / m2 = 15.4 mW / cm2 LEVEL IS GREATER THAN THE 5 mW/m2 MAXIMUM ANSI LEVEL PERMITTED ANTENNA IS MOUNTED 10’ IN THE AIR ON TRUCK, NO PERSONNEL WILL OCCUPY THE PARALLEL BEAM REGION DURING OPERATION. TRANSITION REGION ANALYSIS: THIS REGION WILL DECREASE INVERSELY WITH DISTANCE BEGINNING AT THE END OF THE PARALLEL BEAM REGION AND NOT EXCEED 15.4 mW / cm2

Exhibit A1-pg2 MAIN REFLECTOR ANALYSIS: = P / REFLECTOR AREA = 500 / 3.24 = 154.32 W / m2 = 15.4 mW/cm2 LEVEL IS GREATER THAN THE 5 mW/m2 MAXIMUM ANSI LEVEL PERMITTED ANTENNA IS MOUNTED 10’ IN THE AIR ON TRUCK, NO PERSONNEL WILL OCCUPY THE MAIN REFLECTOR OR THE FEED TO REFLECTOR REGION DURING OPERATION. RF POWER WILL BE TURNED OFF DURING ANY ANTENNA MAINTENANCE REQUIRING PERSONNEL TO OCCUPY ANY HAZARDOUS REGION BETWEEN THE FEED HORN, REFLECTOR, AND TRANSITION ZONE. AS A TRANSPORTABLE UNIT, PRECAUTIONS WILL BE TAKEN TO VERIFY THAT THE ANTENNA IS NOT POINTING TOWARD ANY POPULATED AREA. PREPARED AND SUBMITTED BY: BASIL F. PINZONE, JR. 07/26/2011 TECHNICAL CONSULTANT

EXHIBIT A2 - ANALYSIS OF NON-IONIZING RADIATION, 2.4 m C-Band HARMFUL LEVELS OF RADIATION WILL NOT EXIST IN REGIONS NORMALLY OCCUPIED BY PERSONNEL. CRITERIA: ANSI SPECIFICATIONS REQUIRE THAT PERSONNEL NOT BE EXPOSED TO LEVELS OF NON-IONIZING RADIATION EXCEEDING 5 mW / cm2. THE FOLLOWING ANALYSES SUPPORT THIS DETERMINATION: FAR FIELD ANALYSIS: ANTENNA DIAMETER = 2.4 Meters ANTENNA GAIN = 41.8 dBi (lin 15,135) LAMBDA = 3*108 Meters / 6.175*109 Hz = 0.048583 EFFICIENCY = h = G/(p*D/l)2 = 0.628 POWER MAX AT FLANGE = 358 Watts (25.54 dBW) DISTANCE TO FAR FIELD = 2*D2/l = 11.52 / 0.048583 =237.1 Meters ON-AXIS POWER DENSITY = G*P/4*p*Far Field Distance2 = 15,135 * 358 / 12.56637 * 56,216 = 7.67 W/m2 = 0.77 mW/cm2 LEVEL IS LESS THAN THE 5 mW/cm2 MAXIMUM ANSI LEVEL PERMITTED NEAR FIELD ANALYSIS (Parallel Beam Region & Transition Region): PARALLEL BEAM REGION ANALYSIS: DISTANCE TO END OF PARALLEL BEAM (CYLINDER) REGION: = DIAMETER2 / 2.5 * l = 5.76 / 0.12146 = 47.42 Meters POWER DENSITY AT END OF PARALLEL BEAM REGION = P / CYLINDRICAL PARALLEL BEAM AREA = 358 / 5.76 = 62.15 W / m2 = 6.22 mW / cm2 LEVEL IS GREATER THAN THE 5 mW/cm2 MAXIMUM ANSI LEVEL PERMITTED. ANTENNA IS MOUNTED 8’ IN THE AIR. NO PERSONNEL WILL OCCUPY THE PARALLEL BEAM REGION DURING OPERATION. TRANSITION REGION ANALYSIS: THIS REGION WILL DECREASE INVERSELY WITH DISTANCE BEGINNING AT THE END OF THE PARALLEL BEAM REGION AND WILL NOT EXCEED 6.22 mW / cm2

Exhibit A2-pg2 MAIN REFLECTOR ANALYSIS: = P / REFLECTOR AREA = 358 / 5.76 = 62.15 W / m2 = 6.22 mW/cm2 LEVEL IS GREATER THAN THE 5 mW/m2 MAXIMUM ANSI LEVEL PERMITTED. ANTENNA IS MOUNTED 8’ IN THE AIR. NO PERSONNEL WILL OCCUPY THE MAIN REFLECTOR OR THE FEED TO REFLECTOR REGION DURING OPERATION. RF POWER WILL BE TURNED OFF DURING ANY ANTENNA MAINTENANCE REQUIRING PERSONNEL TO OCCUPY ANY HAZARDOUS REGION BETWEEN THE FEED HORN, SUB-REFLECTOR, REFLECTOR, AND TRANSITION ZONE. AS A TRANSPORTABLE UNIT, PRECAUTIONS WILL BE TAKEN TO VERIFY THAT THE ANTENNA IS NOT POINTING TOWARD ANY POPULATED AREA. PREPARED AND SUBMITTED BY: BASIL F. PINZONE, JR. 07/26/11 TECHNICAL CONSULTANT


Document Created: 2011-07-26 16:00:03
Document Modified: 2011-07-26 16:00:03
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