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So, how would it work on laser speed detector? Does it have to be on all the time to 'jam' the cop's unit, and it would have to irradiate the unit. How would you aim it or mount it? How well do radar detectors work against 'instant on' units?

Man, that's a lot of questions packed into just a few short sentences.

Modern laser jammers operate constantly in receive mode, waiting to sense a LIDAR emission. When they detect it, they respond freakishly quickly with overwhelming energy back to the transmitting unit. This confuses the speed measuring device (SMD). Some LIDAR SMDs can throw an error code that indicates jamming, cops are trained to detect it through the inability to "lock" on a target, and jamming is illegal in some states. If not illegal, seriously frowned upon, and if detected, is likely to earn you a traffic stop and vehicle safety inspection or some such roadside delay/pseudo-punitive response. One has to be careful in overusing a jammer, as getting caught with one is bad for the community (prompts legislation outlawing them-they gather such data) and can cost you your system and a great deal of money. Tennessee can impound your vehicle and seize the system.

Jammers use multiple "heads" or emitters on the protected vehicle to ensure ample responsive return IR energy. Usually three in the front, two in the back for maximum coverage. They have to be located near the most vulnerable parts of the vehicle, aimed properly and leveled, and tested and maintained to ensure they are effective in the initial installation and that they haven't degraded through accumulation of dirt on the emitters or them getting out of level/misdirected. Aiming/leveling them is pretty strait forward (in both meanings of the phrase), and one can use a night vision video camera or NVGs to help aim them with, and a LIDAR SMD to test them with. Doing a well-concealed installation complicates cleaning, aiming, and leveling in most cases.

Radar detectors (RD) manufactured in the last 10-15 years respond very well to "instant-on" radar - some even detecting "pop" transmissions (generally not a court-accepted practice for SMD, but it's used to pre-screen traffic without giving away presence to RD users before obtaining a legal measurement). The problem with instant-on is that if you're the one in the sights, you generally can't react and decelerate fast enough to avoid an accurate measurement. This is where a sensitive detector and learning it's language comes into play - one or two little Ka-band blips a minute apart are telling a story about activity in the RF spectrum, and it may apply to you very soon.

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Somewhere in the archives, way back when I was traffic cop I installed a board member's Lidar jamming unit on a Crown Vic and my Motor Partner tested it by shooting at me with a hand held Lidar. Worked surprisingly well. The board member may want to remain anonymous, but I bet it worked awesome as a cloaking device or Force Field on his bird!

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So, how would it work on laser speed detector? Does it have to be on all the time to 'jam' the cop's unit, and it would have to irradiate the unit. How would you aim it or mount it? How well do radar detectors work against 'instant on' units?

Man, that's a lot of questions packed into just a few short sentences.

Modern laser jammers operate constantly in receive mode, waiting to sense a LIDAR emission. When they detect it, they respond freakishly quickly with overwhelming energy back to the transmitting unit. This confuses the speed measuring device (SMD). Some LIDAR SMDs can throw an error code that indicates jamming, cops are trained to detect it through the inability to "lock" on a target, and jamming is illegal in some states. If not illegal, seriously frowned upon, and if detected, is likely to earn you a traffic stop and vehicle safety inspection or some such roadside delay/pseudo-punitive response. One has to be careful in overusing a jammer, as getting caught with one is bad for the community (prompts legislation outlawing them-they gather such data) and can cost you your system and a great deal of money. Tennessee can impound your vehicle and seize the system.

Jammers use multiple "heads" or emitters on the protected vehicle to ensure ample responsive return IR energy. Usually three in the front, two in the back for maximum coverage. They have to be located near the most vulnerable parts of the vehicle, aimed properly and leveled, and tested and maintained to ensure they are effective in the initial installation and that they haven't degraded through accumulation of dirt on the emitters or them getting out of level/misdirected. Aiming/leveling them is pretty strait forward (in both meanings of the phrase), and one can use a night vision video camera or NVGs to help aim them with, and a LIDAR SMD to test them with. Doing a well-concealed installation complicates cleaning, aiming, and leveling in most cases.

Radar detectors (RD) manufactured in the last 10-15 years respond very well to "instant-on" radar - some even detecting "pop" transmissions (generally not a court-accepted practice for SMD, but it's used to pre-screen traffic without giving away presence to RD users before obtaining a legal measurement). The problem with instant-on is that if you're the one in the sights, you generally can't react and decelerate fast enough to avoid an accurate measurement. This is where a sensitive detector and learning it's language comes into play - one or two little Ka-band blips a minute apart are telling a story about activity in the RF spectrum, and it may apply to you very soon.

That random Ka blip is your friend. Embrace the blip. It is NOT a natural phenomenom. Edited by RXX
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What is the best website(s) for seeing what's legal/illegal for radar detectors & laser jammers?

A laser jammer on a bike would be almost impossible to conceal, would it not?

Why, that sounds like the RDFGS:

http://www.rdforum.org/wiki/index.php?title=RDF_Geographical_Survey

A jammer is far from impossible to conceal on a bike. I'm not prone to flaunting my countermeasures to the world, but some knowledgeable people have seen my install on the XX and have indicated approval. The ECU is completely concealed in the nosecone, the rear head is mounted inside the taillight and masked; the front head is in that thin area of real estate between the bottom of the windscreen and the top of the fiberglass fairing, painted flat black and functionally invisible behind IR glass. There is a nondescript LED (looks like an alarm LED) on the dash and the controls/audio are BT to the Sena via iPhone - immediately concealable with the swipe of a conductive-gloved finger.

It's set to jam for 4 seconds, then go into inactive standby for 2 minutes. That prevents a Jam to Gun, wherein the operator of the laser SMD knows he's seeing a countermeasure. In the two minutes, I can choose to power down instantly (traffic stop scenario) or reset, or just let it automatically come active after the 2-minute delay.

On a bike, the worst give-away to an SMD operator is headlight dive. Good news is, a laser SMD is necessarily line of sight, which in most cases works both ways. You can say you saw brake lights or the police car to allay suspicions. A dedicated traffic guy that is suspicious and has a hard-on for the game would find most concealed installs given the time and inclination, but the game is won by being the least obvious prey - don't attract their attention in the first place. A bike is a little harder to acquire than a SUV, jam and jump on the brakes and he'll likely just skip to the next target before he even gets a lock. Like instant-on, if you're the only target on the road - you're screwed. Don't be that prairie dog that runs along the top of the range backstop after all the pins are knocked down and everyone's still loaded.

Edited by iFanboi
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