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Article #18530

Re: Robocop spotted (Photo radar enforcement)

#18530
From: Phil R. Karn
Date: Thu, 11 Feb 1988 15:54
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> ... the ticket machine can be dealt with easily with a can of spray
> paint.

Spray paint? Rifle bullets? Nah...too brute-force.  Assuming that the
radar works on the conventional CW Doppler principle, there is a much more
elegant way.

Just set up a small electric fan with metal blades in front of the
device. If the blades are properly shaped (or re-shaped) and the fan
turns at the right speed, the radar unit should be fooled into thinking
it's seeing a speeder. Just leave the unit on long enough for the ticket
machine to expend all of its film.

Don't stand in front of the camera while you're doing this...

Phil
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!water!watmath!clyde!bellcore!faline!thumper!karn
References: <602@anasaz.UUCP> <9504@steinmetz.steinmetz.UUCP>

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!water!watmath!clyde!bellcore!faline!thumper!karn
From: karn@thumper.bellcore.com (Phil R. Karn)
Newsgroups: sci.electronics,rec.ham-radio,rec.autos
Subject: Re: Robocop spotted (Photo radar enforcement)
Summary: dealing with RoboCop
Message-ID: <943@thumper.bellcore.com>
Date: 11 Feb 88 15:54:23 GMT
References: <602@anasaz.UUCP> <9504@steinmetz.steinmetz.UUCP>
Organization: Bell Communications Research, Inc
Lines: 16