Closed-Circuit TV camera jammer -- schematic ?
David LaBuda
a device that would disrupt the output of a closed-circuit
TV camera? After reading a novel where one of the characters
uses such a beastie, I've become interested in building one.
I'm guessing that it's just a free-running oscillator that
is noisy enough RF-wise to screw up the camera output.
Any ideas?
Dave
uunet!mcdchg!marcal!apres!dave
da...@apres.UUCP (David LaBuda)
Applied Research (cryptography & security BBS) 1 708 639 8853
Paul Gerard de Jong
>Does anyone out there have a schematic or a kit source for
>a device that would disrupt the output of a closed-circuit
>TV camera?
[ stuff deleted]
>Any ideas?
>da...@apres.UUCP (David LaBuda)
>Applied Research (cryptography & security BBS) 1 708 639 8853
How about using something that sparks, with some antenna. I was thinking
specifically about a taser with a longish hi voltage cable connected. Give
it a try, and keep me informed please. I like the idea myself.
Bart
Henry Spencer
>Does anyone out there have a schematic or a kit source for
>a device that would disrupt the output of a closed-circuit
>TV camera? After reading a novel where one of the characters
Uh, don't believe everything you read. The whole point of closed-circuit
cameras is that their signal goes out on a cable, not over the airwaves.
Getting a strong jamming signal into that cable (or into the camera itself)
is going to be very, very difficult if the thing is competently designed.
--
SVR4: proving that quantity is | Henry Spencer @ U of Toronto Zoology
not a substitute for quality. | he...@zoo.toronto.edu utzoo!henry
David F. Skoll
de Jong) writes:
>da...@apres.UUCP (David LaBuda) writes:
>>Does anyone out there have a schematic or a kit source for
>>a device that would disrupt the output of a closed-circuit
>>TV camera?
>[ stuff deleted]
>How about using something that sparks, with some antenna. I was thinking
>specifically about a taser with a longish hi voltage cable connected. Give
>it a try, and keep me informed please. I like the idea myself.
How about a long-handled stick with a paintbrush on the end of it, and
some gooey black paint? Just walk up to the camera, and...
Or how about a metal-cutting laser? Just aim it into the lens, and...
Or how about one of those gigantic capacitor banks they use to make
artificial lightning? Just build up a few tens of megavolts, aim the
metal sphere carefully at the camera, and...
Seriously, disrupting the output of a *closed-circuit* camera that has
a half-decent design would probably disrupt TV sets within a couple of
hundred metres, and have the FCC swooping down on you.
--
David F. Skoll
Scott Dorsey
>In article <u6JegB...@apres.UUCP> da...@apres.UUCP (David LaBuda) writes:
>>Does anyone out there have a schematic or a kit source for
>>a device that would disrupt the output of a closed-circuit
>>TV camera? After reading a novel where one of the characters
>>uses such a beastie, I've become interested in building one...
>
>Uh, don't believe everything you read. The whole point of closed-circuit
>cameras is that their signal goes out on a cable, not over the airwaves.
>Getting a strong jamming signal into that cable (or into the camera itself)
>is going to be very, very difficult if the thing is competently designed.
Henry is absolutely correct. May I add, however, that if a guard were to see
a lot of noise on his monitor suddenly, he would probably go out and check the
site. It is very easy to disable a closed circuit camera remotely; a shotgun
will do an excellent job of it. It is very difficult to do so without arousing
suspicion.
--scott
Mike Berger
>Does anyone out there have a schematic or a kit source for
>a device that would disrupt the output of a closed-circuit
>TV camera? After reading a novel where one of the characters
>uses such a beastie, I've become interested in building one.
>I'm guessing that it's just a free-running oscillator that
>is noisy enough RF-wise to screw up the camera output.
Most of my surveillance cameras have a composite video output.
You'll need an awful lot of RF noise to affect that. Try a
small nuclear warhead.
--
Mike Berger
Department of Statistics, University of Illinois
AT&TNET 217-244-6067
Internet ber...@atropa.stat.uiuc.edu
Mark Zenier
> Does anyone out there have a schematic or a kit source for
> a device that would disrupt the output of a closed-circuit
> TV camera? After reading a novel where one of the characters
> uses such a beastie, I've become interested in building one.
If you want something electromagnetic, try a tungsten-halogen
spotlight, or splice in a VCR. Otherwise, black spray paint
or a pair of cutting pliers.
With a vacuum tube (vidicon, etc.) based camera, a magnetic
field could screw one up. But with a CCD camera, there's nothing
different from any other electronic device that makes them especially
sensitive to interference.
Mark Zenier ma...@ssc.wa.com
Bill Mayhew
interfere with the picture, but of course, that is not as much fun.
Bill
--
Bill Mayhew NEOUCOM Computer Services Department
Rootstown, OH 44272-9995 USA phone: 216-325-2511
w...@uhura.neoucom.edu ....!uunet!aablue!neoucom!wtm
via internet: (140.220.001.001)
Joe Barger
the lens. The autofocus on the camera will be thrown off by
a mile.
--
*******************************************************************************
Joe Barger (j...@otto.lvsun.com {psivax,jimi, mirror}!otto!joe)
The odds get even You name the game The odds get even The stakes are the same
You bet your LIFE! RUSH
Kelly Goen
what about a small ir strobe pulsed at the row/column scan frequency!!
:)
cheers
kelly
Gabe M Wiener
>a device that would disrupt the output of a closed-circuit
>TV camera? After reading a novel where one of the characters
>uses such a beastie, I've become interested in building one.
>I'm guessing that it's just a free-running oscillator that
>is noisy enough RF-wise to screw up the camera output.
Mess up a _closed-circuit_ video signal? Sure. There is an easy way to
do it. Just get a NINE POUND SLEDGEHAMMER and smash the living daylights
out of the camera, or out of the security guard watching the monitor.
--
Gabe Wiener - Columbia Univ. "This 'telephone' has too many shortcomings
gm...@cunixa.cc.columbia.edu to be seriously considered as a means of
N2GPZ in ham radio circles communication. The device is inherently of
72355,1226 on CI$ no value to us." -Western Union memo, 1877