Environmental Assessment

0160-EX-ML-2013 Text Documents

Boeing Company, The

2013-08-26ELS_140675

                       Environmental Assessment
The Boeing Company

Submitted by:

Allen S. Lindsay, SR
The Boeing Company
Frequency Management Service
Seattle, WA
(206) 544-6053

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 patch antenna array with a
maximum 8 degree beam width.

TX Peak Power (mW)                950000.00
TX Peak Power (dBm)                   59.78
Maximum Antenna Gain dBi              22.00
EIRP (dBm)                            81.78
Maximum Duty Cycle (Dc)                1.00

EIRP Watts                        150564.85
Avg EIRP Watts                    150564.85

TX Avg Power mW (Pavg)
Pp*Dc                             950000.00

Non Dimensional Antenna
Gain
       dBi/10
Gt = 10                         158.4893192
                               Occupational            General Public
Minimum Safe Distance -
Meters                                 15.49                                35

Distance in Centimeters (R)             1549                              3500

AVG Power Density
mW/CmCm
Pd At distance=R
                   2
(Pavg*Gt)/(4*Pi)*R              4.993567281                       0.978087374
                                Max Value 5              Max Value 1


                       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: 2013-08-26 06:53:22
Document Modified: 2013-08-26 06:53:22

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