Laserfiche WebLink
• <br /> ATTACHMENT <br /> Memoranaum <br /> US <br /> dltansporiation <br /> 1. <br /> Federal Aviation <br /> Admkistrotion <br /> Subject: INFORMATION: ASR-9 Radiation Hazard Ceti APR 2 2 1986 <br /> Assessment; APM-300 memo dated 2/12/86 <br /> 1 Repy to <br /> From: Manager, Spectrum Engineering Division, AES-500 Attn.O1' Thompson:FTS 426-3269 <br /> To. Manager, Communications and Surveillance Division, APM-300 <br /> As requested in your memorandum of February 12, the calculated distance along the main <br /> beam from the antenna to the point of maximum Permissible Exposure Level (PEL) for the <br /> ASR-9 is.Q feet. This is the distance calculated to the point at which the power density <br /> equals the-PEL of 5 mW/cmZ for the ASR-9. <br /> We suggest that you also incorporate revised PEL data for the ASR-7 and 8 into Appendix <br /> F of the "Guidelines for preparing Environmental Assessments for Airport Surveillance <br /> Radar Installations" submitted with your memorandum dated February 12. Your attention <br /> is directed to Chapter 3 of the FAA Order 3910.3A which discusses Nonionizing Radiation. <br /> The information presently contained in Appendix F regarding the ASR-8 Personnel RF <br /> Radiation Hazard Survey should be updated to reflect the recently revised ANSI standard <br /> which changed maximum PEL limit from 10 to 5 mW/cm2. The revised data for RF <br /> equipment used by the FAA has been published in an update of FAA Order 3910.3A, dated <br /> October 19, 1983. <br /> We will coordinate with your staff to conduct the test measurement of the ASR-9 at the <br /> contractor's plant. Please inform us as to when the equipment and antenna test range will <br /> be available. <br /> • <br /> If you have any questions or comments on the Radiation Hazard Study, please contact <br /> Mr. Kenneth Thompson, of my staff, on (202) 426-3269. <br /> Gerald J. M <br /> 4 / 7i <br /> y <br /> 4 <br /> 1 <br /> 1 <br />