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- Newsgroups: sci.electronics
- Path: sparky!uunet!charon.amdahl.com!pacbell.com!decwrl!purdue!yuma!gw214790
- From: gw214790@LANCE.ColoState.Edu (Galen Watts)
- Subject: Re: police laser radar
- Message-ID: <Nov16.225043.36767@yuma.ACNS.ColoState.EDU>
- Sender: Galen Watts, KF0YJ
- Date: Mon, 16 Nov 1992 22:50:43 GMT
- Distribution: usa
- References: <1992Nov12.225737.21262@rtsg.mot.com> <1992Nov16.164531.2036@phx.mcd.mot.com> <1992Nov16.205142.28519@julian.uwo.ca>
- Nntp-Posting-Host: blanca.lance.colostate.edu
- Organization: Environmental Science and Technology Center
- Lines: 17
-
- 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.
-
-