about a day ago you wrote:
>I live in Denver, Colorado and recently the benevolent authorities have
>activated photo radar in Denver.  I plan a three-fold attack on this technology
>and I am looking for suggestions (citicisms) and any data you gurus might
>have on Photo Radar.  I have no specs on PR.

Hi, I designed a Digital photo radar about a year ago for a customer, this one
does not use photography, It take the image dititalizing a video image and
send it over a radio link to the a police area, about 1 mile ahead, so when
you croses that area, they already have the printed form with you photo :-).
well , you must ask how it detects speed first, mine uses microwave, and
one way is putting 2 microwave gunn emitter at the top and bottom of the
right side of you car (in my country radar detectors are always
at right side), transmitting pulses, 100- 400 Hz pulses will work, keep in
mind that this one should not be visible or you can be busted :-).
I had put this devices inside of the optics of my car, and they work fine.
(24.125Ghz Gunn Tx), if you found similar devices but with more power, would
be better :-).

Laser radars are difficult to deflect, so I dont know how to do that.

>1)  Car mounted white-out
>The automobile would have a sensor that would detect photoflashes.  Upon this
>detection, flash tubes located around the license plate would activate and
> wash out the view of the plate.  This could also be done for the driver
>location in the photo.

If it uses flash will work in the night only, just put a slave flash detector
at both sides, and when the original flash lites, yours too :-), manual
activation will not be accurately.

>2)  Faux plate number
>The automobile would have a sensor that would detect photoflashes.
> Upon this detection, an LCD covering the license plate would activate
>and display a fake message such as the license plate number for the mayor
>of Denver.  Or maybe a "Save the Whales" kind of thing.

JAAAAAAAAAAAAAJJJJJJJJJJAAAAAAAAAJJJAAAAAAAAJAAAJAAJAAJAAJAAJAAJAAA.
ROFL really bad :-)))!!!.

I use PICs to control this.  What do you think ?

Another thing that you can do, is to install 2 powerull XEON lamps at each
side of the licence, front and rear, and flash this ones at 10 flash x second
when you detect signal from the radar detector, not very cheaper solution
but... will work if there is no too much sunlight.( most of the Autoiris lenses
for radar use, are slow to avoid that a car reflection closes the iris too
much and the obtained image be too dark. keep it in mind.

see you.
   Leandro J. Laporta (LU2AOQ)      mail: lu2aoq@yahoo.com
 wrk: Arg. Assoc. for Space Tech.    ham: TCP/IP high speed group HSG


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