this is where i mounted my jammer boxes chk it out

https://www.f150online.com/forums/sh...t=laser+jammer

 

Posted question in other thread...

 

yes "radar" or doppler jammers are illegal...these emmit radio frequencies., but recievers are not (recivers are known as detectors)

"laser" or lidar jammers are not illegal. they emmit a infared light out to confuse the lidar system. not illegal to emmit an invisible light.

radars-real name is a doppler radar, send out a very seclet radio freq. and mesures the diffrence in time in distance in something like 26 times per sec. these are usually left on at all times and easy to know when they are in use. they send out a cone signal and reflect back the vehicle with the most energy, not always the biggest or the fastest, the one with the most energy.

laser-real name is a lidar sends out a invsible infared light to meausre time and distance to calculate speed. this cycles at i think is 300/sec. the easy way to explain is like your tv remote, you point it at the tv and it works you point it at the floor it does not work. yes some tvs have better remotes than others and you can put your hand in front of the sending unit and it will still work, but that is how the lidar works. also they are off until used. your laser detector will not go off if they are on and pointing at the vehicle in the lane next to you. the beams are very narrow, not cone shaped like radar more like a pencil shape. first point of aim is usually front plate then to a headlight then to a side mirror. they are 99% satationary, very expensive for a moving radar machine. i have seen a vehicle with very high dollar lidar detector/jammer being read while officer getting the drivers headlamp at 500 ft then move over the front plate area where the jammer lights are and watch them slam on the brakes. if it is not aiming at the "laser" reader it will not go off. yes sometimes there is refected energy from other vehicles or the ground but not always. and at 300 cycles/sec and human reaction at about .5 sec...you are already got.

 

Actually, laser guns send out various pulses per minute, depending on the manufactuer and model.
Laser Atlanta Stealth mode: 68 pulses per minute (takes a little longer to get a speed)
LTI Unltralytes: 125 PPS
Kustoms Pro Laser III and the Pro Lite: 200 PPS
Laser Atlanta(normal mode): 238 PPS
Pro Laser II: 238 PPS
Pro Laser I: 380 PPS

Laser still does "cone" out just not nearly as much as radar. At 1000 ft, the beam will be about 3 feet wide. At 500 ft, it's 1.5 feet, and so on. Laser doesn't neccesarily have to hit the reciever for a jammer, or laser detector to alert.

Some of you have the V1 which undoubtly has the best laser detection of any radar detector. There have been tests where the V1 will alert to laser at 125 feet from the gun, even when the gun is aimed at the headlights, if not closer. Though, it not a very good idea to realy on a radar detector for any type of advanced laser detection. Yes, I know it happens, but it is not a good idea to rely on it, because as troberts said, the reading is pretty much instant if the operator knows how to use it.

As for radar jammers, aside from being illegal, almost all of them do not work. The only one that somewhat works is the Scorpion, but it isn't very reliable and tends to fall out of tune, making it useless. Passive "scramblers" DO NOT work. They are just a waste of money and a scam.

 

I watched about 10 mins worth of video where they tested all blinder models, and a few of these pieces of tape over the chrome/headlights, etc. Is blinder a radar jammer?

 

I don't understand what is so hard about going the speed limit?

I can understand maybe 5 mph over, but no more. The speed limit isn't posted just as a challenge to you. There is a reason it's there.

 

cars like corvettes and such with no front plate aim for drivers side side mirror. well away , more than the aprox 3 foot beam width at 1000ft...500ft the beam is about 1.5 foot, from that tradional area of where the "laser" jammers are placed, over the front plate. red and black cars are harder to "get". most citations are written in city applications are from 300-600 ft. but have been written at over 2000 ft.

tape doesnt do anything for you, if they can see it they can get it, somethings just makes it harder.

here is a cheaper unit not a current prolaser setup, current version gives distance and speed and a single dot in the viewing screen not a circle with cross hairs...this has to be put out by a company showing how great thier system works...but notice how they have it aimed directly at the front and rear plate of the car with the jammer (the silver merc sedan) this is where the jammer is placed. just move the aiming point to one of the side mirrors and the jammer is worth nothing.

http://www.youtube.com/watch?v=cerYiPogw-0&NR=1

 

You're going to need one steady hand if you want to aim for something the size of a side mirror, especially a car mirror. Most LEOs are taught to just aim for center mass, as this requires the least amount of aiming and you can get a reading rather easily, even if there is not front plate (clear coat is reflective too ). Some of the more seasoned LEOs aim for the headlights, as here is where you will most likely get PT from a so-so jammer installation.

What kind of tape are you reffering to? I've done testing with 3M clear duct tape and found that it reduces lidar reflection somewhat, but nothing special, and nothing that will save you from a ticket on a typical encounter. I've seen a truck that with a black car bra, and special headlight covers, gets punch through at 1200 feet. So, really the only protection one can get for cars as big as ours are active laser jammers.

 

Why do people pass information along like that. Appears to work rather perfect here. Watch the video below. The tape I was referring to worked "OK" and definitely DID work in the video radarbusters put out. It didn't work near as well as the blinders. The blinder M20 works ok, the blinder M40 worked fantastic. I am having trouble finding the video showing the tape vs blinder.

Click here.

 

travis08 - pm sent...

 

videos that are posted are usually made by companys that are selling a product...do you think they will show the item they are selling not working????

aim for side mirror...they look about the same size as a headlight to me

 

Not to hijack, but I was told by a friend officer that once you get pulled over, to get out of the ticket you can ask when the gun was last callibrated, because they are supposed to be done every so often. Is this true or just maybe worked once with a new officer?

 

I was in court the other day and the judge brought this up, the officer said it's common practice to calibrate before every shift. I could be wrong, and maybe if the cops being a **** I'll ask him this (they usually tend to be, wierd).

 

Hmm so did they have to show proof or did the judge just take the officers word for it? Because if they just take their word then I would say that it is common practice for me to not speed but I did and I got caught. BUT then again that probably wouldn't go over too well...

 

the both machines have internal test. they are made to not operate at all if not working properly. the lidar is very simple test for calibration usally marked off at the station spot on ground 100ft away to a given target...if it reads 100ft + or - 2 ft (i think) its good to go. the doppler, or tradional radar uses tunning forks..one at 35 mph and the other at i think 65 mph...two are used when testing the moving radar..one for low and one for high...the low radar reads moving vehicle speed the signal is taken from the roadway ahead the the high doppler in the moving mode you are the target. most officer know that this is an issue in court and that attorney will ask that question. virtually all test prior to start of shift, others test once at start once at mid and once at end of shift...and then the hardcore guys test once at start/mid/end...with an internal test between each stop...bout 2 secs for internal test. and if you ask to see the radar look over your shoulder and look at that thingy sitting on thier dash....you do not have to see what it says...no law says you get to see it, you have no right to this. if you ask to see it...and some dps officers here will let you...when they put you in the back seat...but that view is not too good because that is the same seat you will be in when you see you car getting towed and your going to jail.

officers also use the lidar/radar as tools...they are trained to visually estimate the speed of the vehicle and then confirm the estimation with the lidar/radar. if they see a vehicle driving at about 50 mph and the radar says 90...well they know something is wrong. then to really cut hairs and muddy court proceddings more believe it or not...you are always going faster than what the radar reads...this is due to the cosine effect (since they are not directly in front of you, 95% of the time, the angle distorts the speed) if on freeway and in lane 1 and he is on shoulder then the angle is less and the error is less. if you in lane 5 the error is greater..there is a formula for this but is seldom brought up in court since error is always in the offenders favor.

supreme court case ruled that officers do no have to know how to build or exactly how the machine works to operate it correctly. it was brought up do most people know how to build a calculator/tv/or computer...but they know how it works and how to operate it. most people cant take apart and rebuild or know exactly how the tv remote works,,,,but they know when it is not working...