Xref: utzoo rec.autos:15699 sci.electronics:5294 misc.consumers:8888
Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!uw-beaver!uw-june!uw-entropy!dataio!pilchuck!ssc!mcgp1!jgo
From: jgo@mcgp1.UUCP (John Opalko, N7KBT)
Newsgroups: rec.autos,sci.electronics,misc.consumers
Subject: Re: Radar Detectors (Ka band)
Summary: make your plates invisible
Keywords: radar, cops, Ka, X, K
Message-ID: <1772@mcgp1.UUCP>
Date: 21 Feb 89 18:46:05 GMT
References: <603@icus.islp.ny.us> <7944@netnews.upenn.edu> <249@turbo.RAY.COM> <1580@anasaz.UUCP>
Organization: McCaw Cellular Communications, Inc., Seattle, WA
Lines: 26

In article <1580@anasaz.UUCP>, john@anasaz.UUCP (John Moore) writes:
> 
> Even nastier, the cameras work with infrared strobes and film
> and are run at night, when it is much harder to spot the vehicle
> holding the radar.

So, you cover your plates with a material that's transparent to visible
light (so you're legal) but opaque to I/R.

I attended a demo of a surgical I/R laser a while back, and the laser op
said that those of us who were wearing glasses were safe, but the others
had to put on safety glasses.  The safeties looked like they were made of
plain old ordinary transparent plastic.  This was a 10 watt laser, so if few
millimeters of plastic blocked enough I/R to protect our eyes, it should
be sufficient to prevent the RoboCop from getting an image of a license plate.

Anybody know for sure what plastics are I/R opaque?


				John Opalko, N7KBT

				jgo@mcgp1.UUCP
				john@n7kbt.WA.COM


	"Honest, officer, it's there to keep the plates clean."