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Police! Stop! or we will EMP you!
The next thing to stop you if you commit road traffic offences could be an 'EMP' type device!
"A futuristic gadget which disables suspect vehicles with radio waves could soon be used by police in car chases. It's their latest weapon in safely ending pursuits.
The invention of a device which is effectively a stun gun for cars has roused the interest of senior officers.
They believe it could offer a safe alternative to high speed chases, which all too often result in deaths.
The number of people killed by crashes involving police cars in the UK is "far too high", the Police Complaints Authority warned last year.
With cop-show style chases off-limits, the potential for inventive ways to halt a runaway car has never been greater.
At the flick of a switch, the zapper directs a beam of intensely concentrated radio waves at the target car and makes it stall, safely bringing it to a halt.
The system works, according to its inventor Dr David Giri, because it turns the very technology which has revolutionised motoring over the past decade against the driver.
Computer chips are now used in most cars to control the fuel injection and engine firing systems. By knocking these out the car cannot be driven.
The system relies on a battery and a series of capacitors stored in the police car's boot. The radio waves are produced by sending a short burst of electricity into a roof-mounted antenna, which has a target range of about 50 metres.
Tests on the device are being conducted by Home Office scientists and police also appear to be keen on it.
"It seems to have potential, there's no doubt about it," said Mick Barker of the Police Federation.
But officers still want to know more about the effect of the device on non-suspect cars in the area. And, of course, it does not work on vehicles built before on-board computers were standard. "
I trhink it is a col idea for drunk or dangerous drivers.
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We are anarcho-syndicalists on the shop floor, green anarchists in the woods, social anarchists in our communities, individualists when you catch us alone, anarcho-communists when there's something to share, insurrectionists when we strike a blow.
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15-07-2004 08:08 AM
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Kind of like the things they used in Too Fast Too Furious, which I've heard are concept weapons for the police to use to shut down cars as well. Especially since most new souped up cars run on computers and stuff just to keep them moving!
Growing old is compulsory, growing up is optional!
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A freudian slip is when you say one thing but you're really thinking about a mother.
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Various versions of this concept have been experimented with for some time, oldest I can think of is one from 12 years ago, it was a Magnetic Tasar type device where a 30metre(upto) cable with a magnetic terminal on the end is projected at a car & discharg of electrity is sent through the car, it only worked on steel bodied cars(there are quite a few aluminium, fibreglass, carbon fibre & even PET ones getting around) with electronic ignitions &/or fuel injection(these are quite sensitive, even not earthing properly when welding on any part of the car can fuck these up), Carbed(or mechanically injected) cars with conventional distributors were not effected, Another system from about 1995 used a small rocket sled that would go under the car & as it passed under it would discharge an onboard capacitor into a flat wound copper coil thus releasing a sudden strong localised EM field that would induce current in any(even the most basic, basic electrical systems are the least effected usually) electrical system in the car, headlights, ignition coils, starter motors, & alternators would all burn out.
Incidently Diesel built before 1995(some built after this have fancy computerised injection systems instead of basic mechanical ones) are completely invulnerable to EMP, Their engines require absolutely no electrical systems to keep running, the starter motor may burn out but you're already going to be moving before someone is going to try & EMP you.
Last edited by That_Bloke; 15-07-2004 at 05:41 PM.
In this post Goatse.cx, Tub Girl & 2 Girls 1 cup world the term 'Gravy Train' conjures up thoughts of nude conga lines & liberal use of laxatives.
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Master Geek
Geeeek
E-wang: 9"
And, hopefully, as an added bonus, it will give cancer to the criminal!
Shoot first, ask Christian Slater.
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Originally posted by MoleTeaser
And, hopefully, as an added bonus, it will give cancer to the criminal!
The more immediat & likely risk would be madness & permenant neorological damage but that would really take some intense EM fields.
In this post Goatse.cx, Tub Girl & 2 Girls 1 cup world the term 'Gravy Train' conjures up thoughts of nude conga lines & liberal use of laxatives.
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i've built one.
4GHz magnetron with a 40dB gain horn radar, 1KW transformer with some switchmode circuits to pump in the current... sends out a 10GW pulse (1ns) of EM radiation into a narrow band .... we tested it with old computers- turns them off (permantently) at 400m... so it will kill all electronics in a car (never done it) but it does cause parking meters to suddenly stop metering...
works by inducing a standing EM wave across copper and silicon tracks of circuits at the 4GHz wavelength -> which just happens to be almost all circuits... the induced voltage can be around 200V, and as you're all aware, computer IC's don't like votlages above 5V, and voilia! no more IC's...
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Its sitting at work (in parts), i'll take pics tomorrow.....
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Originally posted by pinchy
i've built one.
4GHz magnetron with a 40dB gain horn radar, 1KW transformer with some switchmode circuits to pump in the current... sends out a 10GW pulse (1ns) of EM radiation into a narrow band .... we tested it with old computers- turns them off (permantently) at 400m... so it will kill all electronics in a car (never done it)
I wanted to mount one on the roof of my house with sound(low frequence) activation & target tracking to kill Doof Doof cars, I was going to take lower tech aproach(to the EMP device itself, not the sound activation & tracking), capacitors dumping into coil in parabolic dish.
I have thought of using magnetrons, have a 750watt microwave in the garage but I think the magnetron might be dead, everything else is.
In this post Goatse.cx, Tub Girl & 2 Girls 1 cup world the term 'Gravy Train' conjures up thoughts of nude conga lines & liberal use of laxatives.
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our prototype was made from a microwave magnetron.. yorus should be ok, (they're only a ferrite metal coil with a valve in the middle <- pretty robust)... i'll see if I can dig up our design notes on it, and of course, post em on here.... its wasn't as powerful as our final version was, but it still had a range of around 100m....
a problem is your parabolic dish, you:
a: won't be able to get much gain from them and
b: won't be able to direct it well... thus you'll either:
a: dissipate low energy radiation over a large steradian, or
b: take out the entire street (unlikely with a microwave magnetron)
if you are handy with a welder I'll send you diagrams on how to make your own horn radar antena... for educational purposes of course...
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I once made a castle out of lego
Men do and say horrible things, I know I have. But I'm lucky, because I've been given another chance to be your friend, and I wouldn't trade a moment of that friendship for a lifetime of fuck monkey jungle action.
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Originally posted by King_Crud
I once made a castle out of lego
Have to go one better don't you! 
*sob; humiliated*
We are anarcho-syndicalists on the shop floor, green anarchists in the woods, social anarchists in our communities, individualists when you catch us alone, anarcho-communists when there's something to share, insurrectionists when we strike a blow.
ORGANIZE
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Originally posted by and3w
Reminds me of making a stun-gun from a camera flash unit
You too huh? Mine came from a Kodak disposable, I used 2 super soakers(with a little fine salt mixed well in the water) strapped together with one terminal of capacitor in the stream of each super soaker, it was somewhat effective(the soakers were the 100 metre ones), they had more kick the closer you fired it from, effectiveness also depended on where you were hit, a head shot at 10 metres would black out vision for a few seconds, a shot to the back of the legs at the same range would drop you to your knees.
Edit: I always noticed 2 effect areas, the impact area resulted in some description of spasm or disorientation but no pain, the pain if any(sometimes it was just a twinge) was always in what ever part of you the charge exited through.
Last edited by That_Bloke; 16-07-2004 at 05:49 PM.
In this post Goatse.cx, Tub Girl & 2 Girls 1 cup world the term 'Gravy Train' conjures up thoughts of nude conga lines & liberal use of laxatives.
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Originally posted by pinchy
b: take out the entire street (unlikely with a microwave magnetron)
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I like that idea, nether the less I'll make the Magnetron one(if I make one at all).
I had an idea for a concealable personal electronic scrambler, my idea was to have one of those hand held(4 AA batteries) strobe units they sell at Dick Smith's & the like, they contain 11-14kv caps with rapid recharge, I was thinking of combining this with a mobile phone type antenna so it would be emiting a constant pulsing EM field.
In this post Goatse.cx, Tub Girl & 2 Girls 1 cup world the term 'Gravy Train' conjures up thoughts of nude conga lines & liberal use of laxatives.
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