Cobra Radar/Laser Detectors: Endless Innovations for Safety
Saturday, November 14th, 2009A radar/laser detector is a passive electronic device used by drivers of all types of motor vehicles (see RESTRCTIONS heading below). Only Doppler radar-based devices which utilize the Doppler effect for measuring velocity can be detected. Most of today’s radar/laser detectors can detect signals across a variety of wavelength bands — X, K, Ka, and Ku (Europe).
RADAR/LASER GUNS
Most law enforcement agencies have access to two types of electronic transmitting devices to capture the speed of your vehicle — radar guns and laser guns — with radar being the most common.

Cobra 14-Band Radar/Laser Detector (Model No: XRS9445)
Radar is simply a microwave radio signal and at a distance of 1,000 feet, a radar beam shot from a police radar gun is approximately 85-feet wide. Under normal conditions, radar can penetrate plastic, glass, cardboard, and even your body! Radar’s weakness is penetrating metals, including some types of window tinting that has metalized layers.
Laser is a light beam and is only 18 inches wide at 500 feet. Because the beam is so narrow, the beam can be affected by virtually anything placed between the laser gun and the detector.
SAFETY & RADAR DETECTION
The main use of radar detectors by motorists since their inception is to determine if vehicle speed is being monitored by law enforcement agencies via a radar unit. A second, possibly even more important usage is the early detection and warning of high-speed emergency vehicles (e.g., police, fire, EMS).
In addition to emergency vehicles, transmitters have also been installed in road construction and Department of Transportation vehicles. This incredible feature also extends to alerting the driver to railroad crossings and stationary roadside hazard locations. Used in municipalities in all 50 states, the FFC-approved Safety Alert® system by Cobra Electronics has resulted in a marked reduction of accidents and increased roadway safety.
RESTRICTIONS: Types of Vehicles
U.S. federal law prohibits the operation of radar detectors in all commercial vehicles over 10,000 pounds. In some states — such as Alabama, Ohio, and Tennessee — use of radar detection device is prohibited in all commercial vehicles, regardless of the weight. Also of note, is that the operation of radar detectors is illegal on all U.S. military base, regardless is they are legal in that state.

MOUNTING
All radar/laser detectors include some form of mounting hardware (e.g., bracket and suction cups) to place the detector in one of two different locations: windshield or dashboard. Some detectors can be mounted in either location or even affixed to a sun visor.
The location of your detector equates to communication visibility between your detector and the radar/laser gun. This means that anything between your detector and the signal can cause false readings or no reading at all, even if a signal is present. Because each detector can vary, follow the mounting instructions in your owner’s manual for optimum performance.
CITY/HIGHWAY MODES
Depending on the type of driving conditions you’re encountering, most radar/laser detectors have the option to select specific operating modes: city or highway. This drastically reduces the frequency of falsing in densely populated urban areas. The “City Mode” dampens weaker and broken signals consistent with frequent false alarms. The “Highway Mode” is best used for freeway or other open-road driving and is set for increased sensitivity and will provide the maximum warning for higher-speed driving conditions.
Still have questions? Feel free to speak to an expert hhgregg sales associate. We offer the best-educated associates in the business who are smart enough to make it simple. Price and Advice Guaranteed!
hhgregg proudly carries the Cobra line of radar detectors.












