An early radar detector
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Car Radar, Laser Detectors

A radar detector, sometimes called a fuzz buster, is an electronic device used by motorists to determine if their speed is being monitored by a radar unit. more...

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To do so, police bounce a radio wave off of a moving vehicle with a radar gun that determines the vehicle's speed by the Doppler-effect-moderated change in the wave's frequency. Most of today's radar detectors detect signals across a variety of wavelength bands – usually X, K and Ka (as well as Ku, in Europe, also recently approved for use in the U.S).

These devices should not be confused with ones that use GPS technology and a database to warn a driver who is approaching a speed camera location, as is done in the FoxyTag collaborative project.


Newer speed detection devices use pulsed laser light, commonly referred to as LIDAR, rather than radio waves. Modern radar detectors have been modified to alert to the infrared light emitted by such LIDAR guns. LIDAR detection, however, is not nearly as effective as radar detection because the output beam is very focused. While radar's radio waves can expand to 85 feet across at 1000 feet from their source, LIDAR's light beam expands to only about 6 feet. Also, a police officer targeting a car will most likely aim for the center mass or headlight of the vehicle and, because radar detectors are mounted on the windshield away from the beam's aim, they may not alert at all. Lastly, with such a focused beam, an officer using a LIDAR gun can target a single car in close proximity to others at ranges of up to 3000 feet.

While many companies advertise that their radar detectors can 'scramble' or 'absorb' radar and LIDAR (such as Rocky Mountain Radar), many or all of their products do not affect radar and laser signals in any way. If such products do transmit any type of radar scrambling pulses, they are highly illegal. Actively transmitting on an FCC licensed frequency without a license is a violation of FCC regulations and a felony. LIDAR jammers are legal in most states and are regulated, much like police LIDAR guns, by the FDA as Class I laser devices.

Despite the advent of LIDAR speed detection, radar remains more prevalent because of its lower price relative to LIDAR equipment and the amount of radar equipment already in service. Popularity of LIDAR speed detection is on the rise, though, as costs decline, ease of operability approaches radar, and existing radar equipment reaches its end-of-service life and is rotated out of service.


Popular radar detector brands include Beltronics, Cobra, Escort, K40, Valentine One, and Whistler.

Legality

In some countries and areas, such as those listed below, using or possessing a radar detector is illegal and may result in fines, seizure of the device, or both. These prohibitions generally are introduced under the premise that a driver who uses a radar detector will pose a greater risk of accident than a driver who does not. However, some research has found that the opposite is true. The 2001 Mori report suggests that radar detector users posed a 28% less risk of accident.

Read more at Wikipedia.org


Escort Passport 9500i RadarDetector Red Dis Gps"Sealed" $409.00 Valentine One 1 Euro Radar Detector Europe & World New! $535.00
Escort Passport 9500ix Gps Intergrated Radar Detector $499.95 Cobra Xrs9950 Digital Radar Detector Xrs-9950 Brand New $139.84
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Radar Detector Cobra Esd 8285 9 Band Used $19.99 Early Warning Radar Detector Voice/Text Display Ew3200 $49.99
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Lot 2 Beltronics Radar Laser Detector Vector 995 Nr $9.99 Whistler De1788 Cordless Laser Radar Detector De-1788 $124.99
Beltronics Express 795 Radar Detector * No Power Cord $24.95 Zr4 Shifter Zr-4 Shifter Radarwarner Radar Detector $559.00
New Radio Shack radar detector w/voice alert/360* laser $19.95 Valentine One 1 Radar Detector Slightly Used $300.00
Escort Passport 8500 Radar - Laser - Safety - Detector $119.00 Cincinnati Microwave Mc-Dart 100 Radio Tranciever $3.99
Laser radar $30.00 New Escort Zr4 Laser Shifter compatible with 9500i 8500 $10.00
Early Warning Safety Radar Laser 360 Detector Nib Save $24.90 Uniden - Laser / Radar Detector - 2200Sw - Works $2.00
Cobra Xrs-9940 12 Band Radar Laser Detector New 2008! $139.99 EarlyWarning Ew-3001 Laser Radar Detector with Voice $12.99
New Cobra Xrs9740 12-Band Radar/Laser Detector $93.90 Cobra Radar Laser Detector Esd 9210 Voice Free Shipping $54.95
Nib Escort Passport 9500ix with integrated Gps $485.00 Cobra Xrs 9730 Radar/Laser Detector w/voice Xrs9730 $79.99
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Prices current as of last update, 10/11/08 3:00am.


See also...
BEL, Car Radar, Laser Detectors
Cobra, Car Radar, Laser Detectors
Escort, Car Radar, Laser Detectors
Other Brands, Car Radar, Laser Detectors
Rocky Mountain, Car Radar, Laser Detectors
Whistler, Car Radar, Laser Detectors

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