LI Sensitivity

[Oyusan]

I have always been curious about the sensitivity of Laser Jammer heads... especially LI heads because of the bubbles over the sensors. From what I read, the bubbles help focus the infrared into the diodes.

Now I am not sure about exactly how to ask my question, but I will try to do the best I can. I used a Mustang Gt in the photo below to help describe what I am talking about.



From the center of the license plate to the bottom corners of the grill, I think it is about 18 to 20 inches. Now at 1000 feet, the typical beam size of a Lidar is about 36 inches wide. Pretend that it is being aimed at the license plate at that distance, being held steady, and center. At that range, I picture the beam being barely wide enough to tough the sensors. And the closer the car gets, the smaller and less likely to touch the sensors.

Now owning a Lidar gun, seeing many videos of tests, and having personally done many tests, I noticed that the Laser Jammers (especially LI) are still able to pick up a signal even of that beam shouldn't be touching them - which I assume is scatter. So I am wondering if Lidar's do produce scatter and how much that scatter can contribute to the Laser Jammers picking it up. Otherwise, the Lidar gun would get an easy punch through.

In the end, I am debating whether I should put a front license plate on. I would rather put it on because I want to draw as little attention from LEOs as possible. Yet I don't want to risk punch through. And yes, I know, Veil can help.

Thanks.
-Oyu

[snoopyc4]

In the end, I am debating whether I should put a front license plate on.

Go ahead and put it on. I have a LI dual on my truck (large, with front LP, and chrome bumper/grille) and I get excellent results both in testing and in the real world. IMO a front LP will make little to no difference on your small, black vehicle.

[Oyusan]

Well - red metallic. I just used that one as an example. I was thinking the same thing, because I see many many videos - and PT seems to be under control with the LIs. I'm just curious. Thanks snoopy. =)

[djrams80]

With HP LIs, the plate won't make any difference. The less reasons you give LEOs to pull you over, the better.

[DrCoke]

Leave the plate on. Give no reason to be pulled over. With or with out plates makes no difference with the LI.

If you want to see sensitivity, try testing the ZR4. To me, they are at least 2 times as sensitive as LI. From 4 feet away with the TruSpeed, I almost have to aim directly at the LI head to set them off while I can point 6-inches away from the ZR4 heads and they still go off.

[kpatz]

If you want to see sensitivity, try testing the ZR4. To me, they are at least 2 times as sensitive as LI. From 4 feet away with the TruSpeed, I almost have to aim directly at the LI head to set them off while I can point 6-inches away from the ZR4 heads and they still go off.

Imagine if LI had ZR4's sensitivity along with LI's jamming performance. PTs would become a non-issue.

[DrCoke]

If you want to see sensitivity, try testing the ZR4. To me, they are at least 2 times as sensitive as LI. From 4 feet away with the TruSpeed, I almost have to aim directly at the LI head to set them off while I can point 6-inches away from the ZR4 heads and they still go off.

Imagine if LI had ZR4's sensitivity along with LI's jamming performance. PTs would become a non-issue.

Did you hear that team LI? I also think its best if LI continue to jam 2-seconds after receiving a lidar beam signal to cut down PT even more. I personal feel LI has no issue jamming lidar as long as it sees the lidar beam.

[kpatz]

I also think its best if LI continue to jam 2-seconds after receiving a lidar beam signal to cut down PT even more. I personal feel LI has no issue jamming lidar as long as it sees the lidar beam.

This runs the risk of causing a jam code on some guns. The LEO releases the trigger, the gun stops firing, but continues to receive pulses from the jammer. Bingo... jam code!

I could be wrong though, and maybe all guns stop "receiving" at the same time they stop "transmitting", in which case continuing to send jam pulses for a period of time after it stops receiving pulses would help reduce PTs due to the heads not receiving pulses for a period of time due to gun panning etc.

But V1 or ZR4 level of receive sensitivity would make it a moot point, as it shouldn't miss any shot aimed at any of the targeting locations on the car.

[Swamp]

Oyusan,
I'd say that IF the car was perfectly still, AND the gun was pointed directly at the plate from the distance you described, AND the gun was absolutely, perfectly still, THEN maybe, just maybe, a reading could be obtained without triggering the jammer.
Fortunately, the car is moving, so the shooter has to move also to track it, and even with a tripod the beam will wander around.

[Oyusan]

Oyusan,
I'd say that IF the car was perfectly still, AND the gun was pointed directly at the plate from the distance you described, AND the gun was absolutely, perfectly still, THEN maybe, just maybe, a reading could be obtained without triggering the jammer.
Fortunately, the car is moving, so the shooter has to move also to track it, and even with a tripod the beam will wander around.

Great point. I actually decided what I was going to do. When I get the car, I will use some 3m painting tape, perhaps a magnet, and make a temporary mount with the license plate and bracket when I do the testing. If the results come out good, the dealer said I can have them mount the bracket anytime - no charge. =)

And of course I'll have DJ Rams do the shooting... if he can't get P/T... nobody can. :P