Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site watcgl.UUCP Path: utzoo!watmath!watcgl!dmmartindale From: dmmartindale@watcgl.UUCP (Dave Martindale) Newsgroups: net.auto Subject: Re: Another radar jammer question Message-ID: <2970@watcgl.UUCP> Date: Thu, 16-Aug-84 11:42:19 EDT Article-I.D.: watcgl.2970 Posted: Thu Aug 16 11:42:19 1984 Date-Received: Fri, 17-Aug-84 00:43:09 EDT References: <1605@pegasus.UUCP> Organization: U of Waterloo, Ontario Lines: 16 A cheap radar detector does not have to emit much energy for it to be detected by another nearby radar detector when there is no real radar signal present. It would require considerably more signal strength to reach the radar gun at a higher power level than the signal bounced off the car itself when the car is in range. Also, a simple continuous-wave microwave signal in the right frequency range is enough for a radar detector to decide that there is a transmitter out there somewhere. But for a transmitter to jam the radar gun, it should be modulated, or perhaps have its frequency locked to but shifted slightly from the gun's transmitted signal. Radar detectors just look for the presence of a signal which is assumed to mean that there is a radar unit nearby. Radar guns are measuring a particular parameter of a reflected signal, and are thus harder to fool than the detector.