Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!uunet!microsoft!t-petesk
From: t-petesk@microsoft.UUCP (Peter SKELLY)
Newsgroups: sci.electronics
Subject: Re: Detecting Radar Detectors
Message-ID: <56246@microsoft.UUCP>
Date: 1 Aug 90 21:12:14 GMT
References: <324@bally.Bally.COM>
Reply-To: t-petesk@microsoft.UUCP (Peter SKELLY)
Distribution: na
Organization: Microsoft Corp., Redmond WA
Lines: 14

The Detector Detectors could be picking up the Local Oscilator generated
by the radar detector.  This signal is mixed with the incoming radar
signal, which has the effect of creating a signal that is the sum of
the two signals, and a signal that is the difference of the two signals.

This LO signal would have to be pretty close to the X or K band.

From what I remember about taking apart some detectors, is that most of them
are poorly shielded/filtered.  This leavs a lot of room
for the LO emmissions to get out.

Pete Skelly
KB7GUD
my opinions are my own