Environmental Assessment

0401-EX-PL-2012 Text Documents

Insitu

2012-08-01ELS_128093

Environmental Assessment The Boeing Company Submitted by: Joe Thorsheim The Boeing Company Frequency Management Service Seattle, WA (206) 544-6583 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 and maximum duty cycle used in this operation. The antenna is parabolic antenna. TX Peak Power (mW) 5000.00 TX Peak Power (dBm) 36.99 Maximum Antenna Gain dBi 30.00 EIRP (dBm) 66.99 Maximum Duty Cycle (Dc) 1.00 EIRP Watts 5000.00 Avg EIRP Watts 5000.00 TX Avg Power mW (Pavg) Pp*Dc 5000.00 Non Dimensional Antenna Gain dBi/10 Gt = 10 1000 Occupational General Public Minimum Safe Distance - Meters 2.85 6.5 Distance in Centimeters (R) 285 650 AVG Power Density mW/CmCm Pd At distance=R 2 (Pavg*Gt)/(4*Pi)*R 4.898582428 0.941745225

Environmental Assessment 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: 2012-08-01 10:19:55
Document Modified: 2012-08-01 10:19:55
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