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- Newsgroups: sci.electronics
- Path: sparky!uunet!melpar!doherty
- From: doherty@melpar (Kevin Doherty)
- Subject: Re: How can a radar detector bedetected?
- Organization: E-Systems, Melpar Division
- Date: Fri, 20 Nov 1992 14:19:29 GMT
- Message-ID: <By0qGJ.AG9@melpar>
- References: <18NOV92.13820140.0036@music.mus.polymtl.ca> <1992Nov20.100124.26519@rvgs.vak12ed.edu>
- Lines: 16
-
- The problem is 'LO reradiation'. Most sensitive receivers, right off the
- antenna, do their first downconversion operation. Thus you have an antenna
- going to one mixer port, your LO going to another, and the first IF coming out
- the third.
- Unfortunately, there's some coupling between ports on even the best mixers,
- and that's what's being detected-some LO is going right out the antenna.
-
-
- Now, what I want to see is some enterprising enterpreneur churn out millions
- of 'radar detector detector jammers'-just an LO at the right frequency hooked
- up to a micro antenna. The size of an ice cube, powered for weeks off a small
- battery, and under $1.00 to make: everyone would have one. And all of 'em would
- look like a radar detector to the detector detectors.
-
- Radar detectors = countermeasure; detector detector = counter-countermeasure;
- guess that makes the jammer a counter-counter-countermeasure.
-