Attachment FCCdishTestRslts.pdf

This document pretains to SES-LIC-20070807-01047 for License on a Satellite Earth Station filing.

IBFS_SESLIC2007080701047_584435

From: Brian <brian@coloradostudios.com>
Date: August 18, 2006 12:11:31 PM MDT
To: Brian Brieske <bbrieske@coloradostudios.com>
Subject: Fwd: Scans


                              EXHIBIT A — Page 2 of 4

                        RADIATION HAZARD STUDY



           REGION                      RADIATION            HAZARD ASSESSMENT
                                         LEVEL
                                            mw/om*

 Far Field, RF= 165 meters           0.155                    Complies with guidelines
 Near Field, RN=69 meters            0.37                     i            i        *
 Transition Region, RT                 <0.37                  ©            #        i
 Rn<R<RE
                                       T4                     w            w        «
 Reflector Surface
 Between Antenna and                   0.015                  Complies with guidelines
 Ground
 Between Main Reflector and            1,535                  Potential Hazard
 Feed
 CONCLUSION:
Based on the above analysis it is concluded that harmfullevels ofradiation will not exist in
regions normally occupied by the public or the earth station‘s operating personnel. The earth
station will be marked with the standard radiation hazard warnings, on the antenna itself, warning
personnel to avoid the area in front of the reflector when the transmitter is operational. To ensure
compliance with the safetylimits, the earth station transmitter will be turned off whenever
maintenance and repair personnel are required to work in an area where the radiation level
exceeds the level recommended byapplicable guidelines. Additionally, the earth stationis
secured and access is controlled.


                         EXHIBIT A — PAGE 3 OF 4
                       SUPPORTING CALCULATIONS
                          REF: FCC BULLETIN #65

A. Far Field:

     0.6D° _ 0.6x(2.4)
Rr                               = 165 meters
       2        _     0.021
g— PG__ 70x7.59x10"4
           .=                 .—=1.55W /m‘
     4¢R             47(165)°

S=0.155mW/em*

B. Near Field

       3
      D _            (24)
 a=     >                       = 69 meters
      42        (4)x(0.021)

g=16 'll’~          _ 16 )C 6X 7‘0 bu ar i /m C
      zD‘               x (2.4)°


S=.37mW/cm‘

C. Transition Region:

Since the transition extends between R, and R; the power density can never exceed the
power density in the near field.

«_ Sinf)xRinf)
             R

D. Reflector Surface:

Assuming an even distribution of energy over the surface ofthe dish:


s= es               2oo s ssm /m
      m      r(12x0‘)


                     EXHIBIT A — PAGE 4 OF 4


E. Between Antenna and Ground:

Nearest point is more than 1 diameter removed from the center of the main beam.

 w S(refleclt(;zsurface) =0.015mW /em>


E. Between Main Reflector and Feed:

The diameterofthe feed aperture is 7.62cm. The highest density will be at the aperture.

 _ 2 _ 7010
                   =1,535 mW /cm"
   m z081



Document Created: 2006-10-02 11:14:47
Document Modified: 2006-10-02 11:14:47

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