Path: utzoo!mnetor!uunet!husc6!bbn!oberon!cit-vax!elroy!ames!ptsfa!pacbell!att-ih!ihnp4!homxb!mtuxo!mtgzy!rlf
From: rlf@mtgzy.UUCP (XMRN10000[saf]-r.l.fletcher)
Newsgroups: sci.electronics
Subject: Re: radar countermeasures
Message-ID: <3189@mtgzy.UUCP>
Date: 2 Mar 88 19:30:53 GMT
References: <4596@pucc.Princeton.EDU>
Organization: AT&T, Middletown NJ
Lines: 31
Summary: Its been done

> Think about it: A little black box in your (innocuous looking) Oldsmobuick
> that would, upon receiving a threat signal from smokey, rather than just
> sit there and beep like an idiot telling you to slow down even though its
> already too late, would send back a signal to your friendly Highway
> Patrolman on his X or K or whatever that would register a perfectly
> legal double nickels on the Law's satanic little radar gun's readout.
> Speed with impunity! Drive those Interstates at the speed God made them for!
>  
> Am I talking out my ass, or do I have a beautiful (though doubtlessly
> illegal) idea? I hope I've stirred up a bit of discussion here.
>  
> Seriously: You design the box, and we could be talking millions here.
> Thanks again for your time, and LET ME KNOW WHY THIS COULD(N'T) WORK.

I think it will work but...

A friend of mine sent me plans for a jammer (~4 years ago) that had
two modes of operation:

	1. Dial in the speed you want the cop to see on his end.

	2. Dial in a percentage of what you want removed from your true
	   speed.

I never built it nor do I know anyone who did but its drawbacks were
obvious. You are transmitting (constantly) on the radar bands (illegal), and
the parts for it included a radar gun type transmitting antenna (hard to find)
and a radar detector type receiving antenna. Since you are transmitting
whenever the unit is in operation it would be an easy task for the FCC
to triangulate your position and take you and your gadget to a place
where rf signals would be about the only thing that gets in or out :-).