Exhibit 3A RADHAZ

0078-EX-ST-2005 Text Documents

HNS License Sub, LLC

2005-02-14ELS_69257

                                  RADIATION CALCULATIONS FOR                    0.74 meter EARTH STATION



                 Nomenclature                   Formula                     Value Unit



              INPUT PARAMETERS

M = Antenna Aperture Major Axis                                              0.98      meters
m = Antenna Aperture Minor Axis                                              0.56      meters
w = Major Axis of Feed Mouth                                                0.065      meters
h = Minor Axis of Feed Mouth                                                0.042      meters

P = Max Power into Antenna                                                       0.5 Watts

n = Apperture Effeciency                                                        67%

k = Wavelength @ 30 GHz                                                    0.0100 meters



          CALCULATED VALUES

A = Area of Reflector                          PIxMxm/4                     0.431 meters^2

l = Length of Near Field                         M^2/4k                          24 meters

L = Beginning of Far Field                      0.6M^2/k                         58 meters

G = Antenna Gain @ 30 GHz                     n(4xPIxA)/k^2                36,295 (45.6) dBi



a = Area of Feed Mouth                          PIxwxh/4                    0.002 meters^2



                 POWER DENSITY CALCULATIONS



                                              Maximum Power Density in Region
                   Region                                                                           Hazard Assessment
                                                Formula                Value (mW/cm^2)          (FCC MPE Limit = 1 mW/cm^2)



1 Near Field                                     4nP/A                          0.31            < FCC MPE Limit

2 Far Field                                   GP/(4(PI)L^2)                     0.04            < FCC MPE Limit

3 Transition                                <= Nr Fld Region                    0.31            < FCC MPE Limit



Document Created: 2005-02-14 11:12:32
Document Modified: 2005-02-14 11:12:32

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