Updated Environemental Assessment

0046-EX-CN-2019 Text Documents

Insitu

2019-02-11ELS_222931

                       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.

 TX Peak Power (mW)                   170000.00
 TX Peak Power (dBm)                      52.30
 Maximum Antenna Gain dBi                 28.00
 EIRP (dBm)                               80.30
 Maximum Duty Cycle (Dc)                   1.00

 EIRP Watts                           107262.75
 Avg EIRP Watts                       107262.75

 TX Avg Power mW (Pavg)
 Pp*Dc                                170000.00

 Non Dimensional Antenna
 Gain
 Gt = 10dBi/10                     630.9573445
                                  Occupational              General Public
 Minimum Safe Distance -
 Meters                                    13.1                                    30

 Distance in Centimeters (R)               1310                                  3000

 AVG Power Density
 mW/CmCm
 Pd At distance=R
 (Pavg*Gt)/(4*Pi)*R2               4.973893317                           0.948410925

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: 2019-02-11 14:13:48
Document Modified: 2019-02-11 14:13:48

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