Environmental Assessment

0731-EX-CN-2017 Text Documents

Insitu

2017-09-05ELS_197828

Environmental Assessment Per CFR 47, section 1.1307.b(1), Table 1, all applications for experimental operations with an ERP greater than 100 watts require evaluation for compliance with human exposure limits defined in section 1.1310, and if exceeded require submission of an Environmental Assessment as defined in section 1.1311. The below calculations define the minimum safe working distance for both Occupational and General Public, which are based on the maximum permissible exposure limits of 5 mW/cm2 and 1 mW/cm2 respectively. These calculations were conducted using the highest gain antenna used in this operation. The antenna is 48 inch parabolic dish. TX Peak Power (mW) 10500.00 TX Peak Power (dBm) 40.21 Maximum Antenna Gain dBi 41.10 EIRP (dBm) 81.31 Maximum Duty Cycle (Dc) 0.50 EIRP Watts 135266.20 Avg EIRP Watts 67633.10 TX Avg Power mW (Pavg) Pp*Dc 5250.00 Non Dimensional Antenna Gain Gt = 10dBi/10 12882.49552 Occupational General Public Minimum Safe Distance - Meters 8.92 19.95 Distance in Centimeters (R) 892 1995 AVG Power Density mW/CmCm Pd At distance=R (Pavg*Gt)/(4*Pi)*R2 6.764251251 1.352270704 The antenna will be operated in a controlled area, and will be directed towards the aircraft in flight. Only authorized occupational workers will be allowed access to the area of operation. In addition the transmitter will be secured prior to conducting maintenance, and the area will be monitored during the operation to ensure that personnel are clear of any radiation hazard area.


Document Created: 2017-03-17 12:40:46
Document Modified: 2017-03-17 12:40:46
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