Laser jammers

[hospitalfood]

just bought a radar detector online, the company also offers help with laser jammers.
anybody know anything about laser jammers? anything at all?

thanks

adam.

[ipod1098]

what do ya wanna know?

[Boob Johnson]

what do ya wanna know?

Apparently, they jam laser's

I dunno just something I heard

[bugjuice]

you know the way lasers work? bouncing a signal off you, and it times how long it takes to get back to the gun yada yada..??

well the jammer does something to the signal, like flooding it with tons of signals, so it gets back at some stupid speed, and records you doing 400kph, which you're obviously not, or it manages to scramble it all together and not record a speed at all. At which point the offisur has scratched his head, and you're long gone already. If you're obviously burnin it, chances are they'll chase ya, but they won't have a fixed speed, so scrub off if you see blue n reds in the rear, and what's the worst they can do? (cue someone to make smart comment)

no idea how effective they are, not used them. Radars aren't the cleverest things anyway. One radar recorded a brick wall traveling at something like 86kph apparently. Was on the web, must be true..

[Boob Johnson]

One radar recorded a brick wall traveling at something like 86kph apparently. Was on the web, must be true..

Yeah well I bet my brick wall can go faster than YOUR brick wall


Yeah that's pretty much what I heard, but I also heard they are illegal to use in NZ. Much like a bong............you can buy one just don't use it

[kneescraper]

Im yet to find a brave enough man to try out a jammer...you would be pretty pissed if it didnt work like it should have.

[NighthawkNZ:Me]

just bought a radar detector online, the company also offers help with laser jammers.
anybody know anything about laser jammers? anything at all?

Ahhh the joys of electronic warefare...

[necrolyte]

Im yet to find a brave enough man to try out a jammer...you would be pretty pissed if it didnt work like it should have.

My old boss had a sort of jammer deal, apparently it sent a signal back to the coppers rader to say he was doing 100km/h. Story is that he was going thru a 70 zone and a cop done him for doing 100km/h in a 70. The cop was like "i'm sure you can't have been doing 100 but thats was the radar says"

So unluckly enough he got a ticket for doing the speed limit.

[Mikkel]

you know the way lasers work? bouncing a signal off you, and it times how long it takes to get back to the gun yada yada..??

well the jammer does something to the signal, like flooding it with tons of signals, so it gets back at some stupid speed, and records you doing 400kph, which you're obviously not, or it manages to scramble it all together and not record a speed at all. At which point the offisur has scratched his head, and you're long gone already. If you're obviously burnin it, chances are they'll chase ya, but they won't have a fixed speed, so scrub off if you see blue n reds in the rear, and what's the worst they can do? (cue someone to make smart comment)

no idea how effective they are, not used them. Radars aren't the cleverest things anyway. One radar recorded a brick wall traveling at something like 86kph apparently. Was on the web, must be true..

/Nerdmode

Traffic lasers rely on the doppler effect to measure your speed. When the laser hits a moving target the reflected signal will be subjected to a small frequency shift (red shift (frequency decrease) for targets moving away from the observer and blue shift (frequency increase) for targets moving towards the observer).
Now this is all based on Mr. Einsteins relativity theory and a precise measurement of the frequency shift can be used to calculate the speed of the target. And even though the traffic speeds are very "unrelativistic" (i.e. nothing REALLY funky happens) the equations hold and the detectors can be very very accurate giving a very precise speed measurement. Obviously some things can fuck such measurements up and that's what the jammer is for.

The jammer works (as far as I've been able to find out) by emitting a broadband signal in the laser band which will flood the detector and the return signal can not be picked out unless the reflected signal is very large (i.e. the target is very close to the detector).
As the jammer emits its jamming signal it warns you that you are being pinged and you have time to slow down before you get too close to the laser gun. When you reach legal speeds you turn of the jammer and let the nice police officer get his reading - and on you go.

[kneescraper]

Ahhhh hahahahahah thats classic, you would have thought it would have a brains to see when hes gone under 100km/h and switch off. Thats so funny though....mahahahah classic

My old boss had a sort of jammer deal, apparently it sent a signal back to the coppers rader to say he was doing 100km/h. Story is that he was going thru a 70 zone and a cop done him for doing 100km/h in a 70. The cop was like "i'm sure you can't have been doing 100 but thats was the radar says"

So unluckly enough he got a ticket for doing the speed limit.

[Mental Trousers]

/Nerdmode
....
The jammer works (as far as I've been able to find out) by emitting a broadband signal in the laser band which will flood the detector and the return signal can not be picked out unless the reflected signal is very large (i.e. the target is very close to the detector).

Basically, the jammer is spitting out laser wavelength noise, burying the reflected signal in static making it impossible for the detector to pick it out and therefore unable to read your speed. However, this only works until you are close to the detector (inside it's burn through range). Then the reflected signal becomes stronger than the noise that's trying to hide it so the detector can detect it and figure out what speed you're doing even though you've got the jammer on!!

The other way of doing it is if you know what wavelength the laser radars use (or you can detect the wavelength) you can broadcast a signal that fakes a red/blue shift, spewing red shifted signals behind and blue shifted forward. Of course it still suffers from the same problem the broadband signal does, ie burn through range.

[ArcherWC]

For the price of one, when was the last time you actually saw a laser being used.
Personally I have had all of one laser ping in the last two years of using a detector. Not worth it to me

[Boob Johnson]

For the price of one, when was the last time you actually saw a laser being used.
Personally I have had all of one laser ping in the last two years of using a detector. Not worth it to me

mmm would of thought there would be high usage in Auckland, certainly on the motorway(s)

[kneescraper]

I know they are used quite often in Gisborne...infact one Police man parks out side my house trying to ping some naughty passer-bys.

[hospitalfood]

ok....i know more than i did, please keep it coming.
Archer, how much are they?? and how often do you get pinged by radar??
bought the same detector as yourself.