Attachment RADHAD

This document pretains to SES-MOD-20030225-00238 for Modification on a Satellite Earth Station filing.

IBFS_SESMOD2003022500238_311282

RADIATION HAZARD STUDY SITE: E890397 KGW has evaluated the radio frequency environment in and around the proposed earth station and found it to be safe for continuous exposure of operating personnel and the general public. Only the internal antenna structure, specifically the area between the feedhorn and the dish, shows a radio frequency environment that is considered excessive for continuous exposure of personnel. This area is sufficiently high above ground level that it cannot accidentally be entered without the aid of mechanical equipment. 1.0 Station Parameters Antenna, Andrew ES24SNG—LTE, 2.4 M, +48.9 dBi@ 14.25 gHz Operating Wavelength (A¥) = 0.2105 M Transmitter RF Power (P) = 250 watts 2.0 Equipment Used In This Study Radiation Monitor Narda 8616. SN: 05044 Calibrated 8/30/2002. Next calibration due on 8/30/2003. Isotropic Probe, Narda 8621D. SN: 24105 Calibrated 11/2002. Next calibration due on 11/2003. 3.0 _Summary of Results All test readings were taken with the equipment described in section 2.0. The satellite transmitter was set to its‘ maximum power of 250 watts. Operating frequency for this test was 14.031 gHz. The probe was placed at head height (6°) and the parameter of the vehicle was s urveyed. A tno time did the readings exceed .037 mw/cm*. The highest reading was taken under the feedhorn . The lowest readings were taken perpendicular to the satellite dish. These readings did not exceed .030 mw/cm*. KGW Radiation Hazard Study — page — 1

The readings directly behind the satellite dish was .025 mw/cm". Again this reading is at ground level. The highest reading inside the vehicle was found directly behind the transmitter and it was a reading of .60 mw/cm*. The readings in the front operations compartment did not exceed.001 mw/cm*. 4.0 Conclusions At no place, in or around our vehicle does the measured RF exceed the Occupational Safety and Health Act (OSHA) limit of 5 mw/cm*. The exposure to the general public and the operating personnel of this vehicle are well below all recommended limits for RF exposure. Note too that all of these readings are actual readings and not calculated, proving that this earth station meets and easily meets all recommended RF levels for this type of installation. TECHNICAL CERTIFICATION 1 hereby certify that | am the technically qualified person responsible for the preparation of the engineering contained in this application; that | am familiar with the applicable rules of the Commission; that 1 have either prepared or reviewed the engineering information submitted in this application; and that it is complete and accurate to the best of my knowledge. P. Eric Dausman Director of Broadcast Operations & Engineering KGW—TV King Broadcasting Company KGW Radiation Hazard Study — page — 2


Document Created: 2019-04-25 22:09:59
Document Modified: 2019-04-25 22:09:59
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