Police Laser Gun - Pro Laser II

[Buddha#81:Me]

Hmm I aint believing that without pictures, I would of said a standard MOG is way too tall......... oh they are 3.14m roughly http://www.army.mil.nz/our-army/equi...nt/default.htm

And a C-130 load bay is



Just a touch short since 9 feet = 2.7432 meters

Can a Herc make it across the ditch or anywhere with a LAV inside?

Im picking you would need to remove the canopy and bows, fold the mirrors in and the tailpipe off the ehaust stack you'd gain 300mm or more.

[vagrant]

Hmm I aint believing that without pictures,

believe

[Tumbles]

Do you ever see cars with compact discs dotted about the front windscreen? These tossers actually believe that the CD's will deflect the laser or radar police use, how precious!!!!!!!

Well actually.... I can't call myself an expert, but lasers will in fact reflect off mirrored surfaces just like any other electromagnetic signal. However you would need a little more of your surface area covered than just a couple of CD's sitting on your dash. A handheld lasergun will not be held steady and therefore would reflect back off of almost all of the car as it moves around slightly. Therefore I reckon you'd need most of the car/bike covered in chrome and enough curvy bits to reduce direct reflection.

[Tumbles]

As for the mog, that's awesome. Is even the cab under the center wing section there? (lowest point in Herc's roof)

[vagrant]

As for the mog, that's awesome. Is even the cab under the center wing section there? (lowest point in Herc's roof)

Yup, smack on the CoG.

[vagrant]

A Uni Power Crash Fire Tender.

[TgaGuy]

Ok; Ive had my fun with the Laser Gun. Its up for sale.
see http://www.trademe.co.nz/Electronics...-166236219.htm

[Guided_monkey]

Ok so how many bodies to drive/direct a Unipower into a Herc????

Where was it going??? Riviera of the south....... Ohakea???

[FastBikeGear]

Hi All.

I have got myself a Kustom Signals Pro Laser II hand held speed gun."

I still have a couple of factory manuals (P/N 006-0535-00) for this obsolete model. (I think it is still in use in NZ)

I used them to win a case against the NZ police in 2005 who used the gun well past the effectrive operational range under and with an incorrect understanding of their operation. The locally written training manual was at odds with manufacturers specifications and recommendations. In the end after a couple of letters back and forth the police cancelled the court hearing and wrote me a nice letter saying that they had made a mistake on the date on the ticket and they no longer could prosecute. (Their date on the ticket was correct).

Interestingly the NZ police originally wrote me a letter saying there were no manufacturers manuals but I was able to purchase two manuals withing 15 minutes off the Internet. When I contacted the manufacturer for further technical info they also advised that every unit sold was supplied with a manual. They make very interesting reading when compared to the locally non-manufacturer written user guides used here by the NZ police. (I was really looking forward to having some fun with this in court). The manufacturers manuals are significantly at odds with the locally written training instructions which I obtained by requesting them under the official secrets act.

Using these units at the distances being talked about in this thread can sometimes be fraught with technical problems. I was told by the manufacturer when researching the case that most agencies had stopped using the units because of their accuracy limitations and susceptibility to false readings. Kustom signals new models addressed smany of the key issues.

The target range of 15 feet to 4500 feet quoted on page 35 manual is the maximum range under ideal conditions. (No intervening reflective materials such as sign posts, utility poles and no other vehicles beside in front of...or even behind the target vehicle under some conditions). THe 4500 feet is somewhere close to the maximum range that the unit is capable of 'locking' on to light reflected by the vehicle. It does not indicate the range at which the unit can be reliably used to get accurate readings.

1. It is rcommended (page 20) that the for situations where long range target acquistion is desired that a monopod or tripod is used to assist. I have spotted NZ police hand holding these units or attempting to rest them on bonnets or window sills and taking reading at over 200m.

2. Panning across the target can cause false high readings. This is because when you pan across different parts of the car the strongest reflection can be received by one part of the car in one instant and another part of car and instant later. This problem is more of an issue at greater distances where a shaky hand increases the panninig effect. Another reason why tripods are recommended for using the unit at a longer range.

It is recommended in the manufacturers manual that the unit is not hand held for longer target acquistion distances for both of these reasons.

[FastBikeGear]

I have done some sums, which suggest a good laser at moderate range would be quite tricky to jam if you were reliant on blasting more energy back at the unit than it was expecting. But, now we have a test unit available, it might be time to get the soldering iron out. They may well hate several reflections at slightly different times, or lots of other possibilities..

Your right amongst other things these units don't cope with non direct reflections. They have none of the anti-aliasing technology of later models. They work on the doppler principle. Non direct reflections that make their way back to the laser receiver by bouncing off adjacent cars, signs on the side of the road etc can add to the speed measured by the unit.

Typically headlights and other bright work of vehicles give the best reflections. At the distances you guys have discussed the divergence of the beam covers many many square feet and the incident beam (laser beam before reflection) covers many square feet from these units. At the distances you are talking about it is easy to get reflections from multiple vehicles. The unit tries to measure the reflections from the strongest source - this can easily be form a car following a bike or beside a bike or even a car with a better reflective surface behind another car ('seen' through the target car's windscreen).

The NZ written training guide I obtained from the police only tells the officers that the beam is pencil thin. No mention of divergence. And no mention of the further accululation dispersion effects of dust particles, etc over longer distances.

[FastBikeGear]

Do you ever see cars with compact discs dotted about the front windscreen? These tossers actually believe that the CD's will deflect the laser or radar police use, how precious!!!!!!!

Actually adding more reflective material to the front of the car helps the laser get a good return signal to 'lock' onto. you'd do better to de-chrome your vehicle and paint it matt black.

[FastBikeGear]

Well that looks like a bag 'o' fun! I'd be pinging the planes around here just for fun. Hell I'd be doing everything with it! Have fun.

The Pro Laser II unit is rated for 5-299mph so no good for planes travelling faster than that!