laser jammers

Author
Discussion

bosshog

Original Poster:

1,636 posts

282 months

Thursday 13th September 2001
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Are they illegal? do the police know you''re using them? cheers

craigw

12,248 posts

288 months

Thursday 13th September 2001
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I was told you can get a year ban if caught using one. Perverting course of justice etc etc. not sure if true.?

nmilton

449 posts

288 months

Thursday 13th September 2001
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Not sure they've ever been challenged legally and, in any event, there's an argument for saying that any prosecution would be outside the scope of traffic law, i.e. perverting the course of justice, so any conviction would result in a fine or prison sentence rather than a driving related penalty such as a ban or points. Until something is specifically illegal it is, by default maybe, legal. If I did enough driving on a day to day basis I'd invest in one but my daily commute on the train doesn't really justify it at the moment Just my thoughts. Edited by nmilton on Thursday 13th September 12:15

rossc

683 posts

290 months

Thursday 13th September 2001
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I think it would be pretty obvious to our friends in blue that you are using one....they wont be able to get a reading from your car !! However, I think it meantions on one of the speedtrap sites that the jammers currently on the market look remarkably like a remote for an electric garage door....I'll let you figure out the rest.

guysh

2,254 posts

289 months

Thursday 13th September 2001
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I believe that some of the current jammers turn them selves off after a period set by your self - to allow plod to then get a reading by which time your hopefully doing a law abiding speed! - **** happens not all electronics work the first time!

WoodE

39 posts

275 months

Friday 9th November 2001
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You are meant to turn the unit off immediately after it beeps and you have slowed down sufficiently for the current speed limit so the plod think they simply missed first time and can get a clear reading second time round.

If you leave it on, the plos will most likely hunt you down as they won't be able to get a reading what so ever until you are passed them and they hit the back (unless u have 2 units).

Also laser jammers are only Laser LED's.. (i believe the same as CD reader lasers?), and send a signal back to the plod gun registering an error, though some units actually display an error on the gun, hence making the plod suspicious, while others simply give no reading on the gun.

As for them being legal, no law has been made yet, personally i'm gonna try wiring up a CD Laser with a battery and have it tested against a plod gun.

Marv

158 posts

279 months

Friday 9th November 2001
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Woode,

Your nearly right... Their are too main jammer units on the market the Snooper Blinder Twin (2 heads) and a Target Laser Echo 850.

The Blinder uses an array of LEDs in each head (8 at a guess) and a Sensor. This device in tests brings up error codes on the Gun.

The Laser Echo uses a Laser Diode (like you say similar to CD players) but is a lot more powerfull (approx 14mW). The makers claim its the same (or similar) laser used in the actual Laser Gun. On some guns this will just breing up error codes and on others will bring up a 'Laser Jamming' indicator.

None of the tests I have seen/read etc show any laser jammer having no effect on the gun. An error code is the most probable result.

Marv

Marin

276 months

Friday 9th November 2001
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okay, so where can you get them and how much do they cost ???

Marv

158 posts

279 months

Friday 9th November 2001
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your looking at around £150 to £250 at a guess. Most places that sell radar detectors will sell them... You might want to note that if you are proven to be using one to stop the police reading your speed then you could be up for 'perverting the course of justice'...

Has anyone ever been pulled with a jammer?

ATG

21,176 posts

278 months

Friday 9th November 2001
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14mW?? eek, that's at least ten times brighter than a laser pointer. Wouldn't want to look straight into one of those. I assume plod's guns have been tuned to a frequency that doesn't pass through our windscreens.

A mate of mine worked on a holographic phase-conjugate mirror that could in theory be used to return fire directly down the optical path of an incoming laser beam. In English this means that instead of just sending a scattered beam of light out of your jammer in all directions in order to confuse Plod, your jammer would fire your laser's entire output straight back whence it came up Plod's gun, just as if you were standing two foot from it. Cool huh? Bang go his receiver's electronics. Hahaha.

nonegreen

7,803 posts

276 months

Friday 9th November 2001
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If they make laser jammers illegal then surely so will CD players be illegal. If they want to do you for perverting the course etc they would have to prove a) you were speeding.
b) you used the jammer to disguise the fact.

As a conclusion I suggest that if such use is not commonplace then the cost of getting a reliable judgement will be too much so they wont bother. After all a few slipping through the net is not a problem because the name of the game is revenue not safety.

fish

3,992 posts

288 months

Saturday 10th November 2001
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As I understand it after looking into it in some depth, there is no current legal case with regard to laser jammers yet.

Of the two availiable the bell system is more powerful with the one laser unit. It fires the beam through a 3/4" black apertureon a box abouut 1x8" which has to be mounted roughly at 90 deg to the road. On a Tuscan this would appear blinding obvious to any policeman. Then the fun stats.

I have heard of someone with a tuscan who solved this very neetly.

You take the number plate off and cut a slot in the GRP and mount the laser in the slot flush with the numberplate mounting area. You set the box in in such a way that the laser window is directly behind a letter on your number plate. Then you have to cut a 3/4" hole in the rear half of the plate upto the back of the clear front piece. When you put the plate on properly and stick the jammer module to the back of it and into the housing slot noone will know it is there and it will fire its laser through the clear part of you number plate.

This I understand was tested at a shop who sell them and works perfectly. All you can see is aperture of the laser which is black forming part of the black letter on your front plate. It would never be spotted.

This device gives you a beep when you are lasered and jams it for about 6 secounds after which it switches off allowing a reading to be taken. Most guns register a beam error code which can be caused by bad aim, a bird flying through the beam etc.

mel

10,168 posts

281 months

Saturday 10th November 2001
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don't know for sure but wasn't precedent set when radar detectors were declared legal decreed under the radio and telegraphy act saying that as they didn't actually transmit anything i.e were passive they fell outside the remit of the act. Now my understanding of laser jammers is that they do transmit a jamming signal all be it at a much higher frequency. I would guess they would be declared illegal on these grounds. shame.

nonegreen

7,803 posts

276 months

Saturday 10th November 2001
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As I understand it you are correct mel, however the radar jammer comes under the licensing bit of wireless and telgraphy act because the frequency falls in that range. Light is is different matter and could not be licensed or we'd all need one for domestic lighting etc. This of course might be on the green agenda as the technophobic morons would like to see us buying magic candles from the witch doctor.

Marv

158 posts

279 months

Saturday 10th November 2001
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Yeah there are rules for anything that transmits radio frequency waves. So it a radar jammer would be illegal on that front and proberbly on the Perverting the course of justice one.

I trimmed the plasic on the back of the grill to fit my Target LE. Its not hardly noticable unless you look real close.

As for the power of the lasers etc. 14mW isnt 14 times brighter than a 1mW laser but it wouldnt be healthy to look into it. Laser guns and jammers all have lenses to widen the beam. So unless you put the thing right next to your eyeball you wouldnt get much damadge. At 1 meter you prob couldnt even feel it.

I once bought a laser from a Cheiftain tank at a surplus auctions with plans to make my own jammer. Only problem it had two laser units both IR - one was 6W and the other 9W (9,000 mW)! so although you wouldnt get a speeding ticket the poor cop wouldnt get the use of his sight again...