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Article #18530Re: Robocop spotted (Photo radar enforcement)
From: Phil R. Karn
Date: Thu, 11 Feb 1988 15:54
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 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