home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: sci.electronics
- Path: sparky!uunet!cs.utexas.edu!sun-barr!ames!agate!rsoft!mindlink!a143
- From: Ed_Meyer@mindlink.bc.ca (Ed Meyer)
- Subject: Re: police laser radar
- Organization: MIND LINK! - British Columbia, Canada
- Date: Fri, 20 Nov 1992 19:26:26 GMT
- Message-ID: <17619@mindlink.bc.ca>
- Sender: news@deep.rsoft.bc.ca (Usenet)
- Lines: 33
-
- > Galen Watts writes:
- >
- > Msg-ID: <Nov16.225043.36767@yuma.ACNS.ColoState.EDU>
- > Posted: Mon, 16 Nov 1992 22:50:4
- >
- > Org. : Environmental Science and Technology Center
- >
- > When talking about IR, generally you speak of wavelength, not frequency.
- > Looking at a handy catalog, the only one I can find uses a wavelength of
- > 788nm.
- >
- > If the police LIDAR systems use commonly available IR LaserLEDS, you could
- > fit a few around the front of your car so a cop in any position in front of
- > you
- > sees at least ond diode. Modulate the power supply with a little noise
- > (like
- > ignition noise) and the officer won't be able to get a reading that makes
- > any
- > sense to his machine.
- >
- > If your source is brighter than the reflection of the officer's source.
- >
- > If they find the system on your car, say it is your garage door opener.
- >
- > Better yet, if you're a ham, it's an experimental radio device, since hams
- > can
- > use any freq above 300 GHz.
- >
-
- Just a quick question: is the >300 GHz area open to Hams in Canada?
-
- Ed Meyer
-
-