Archive | Laser Radar Detectors

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Everything You Wanted To Know About Radar Detectors

Posted on 29 September 2008 by admin

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Christa Kowalczyk asked:

For most of the drivers in the United States, radar detectors are common electronic devices that are widely used in the cars to determine if the speed is monitored by the police radar unit.

The interesting part is that studies claim that the vehicles using radar detectors have a reduced threat of accidents whereas the police believe that vehicles using radar detectors have a greater risk of accidents.

That it why, use off the radar detectors is illegal in some parts of the United States and most parts of Canada and other countries such as Australia. So before you want to buy a radar detector it is better to check with the legal guidelines on the use of it, that are prevailing in your state.

Lets understand how this device works. In most of the cases, the radar unit bounces a radio wave off a moving vehicle with help of a radar gun that in turn determines the speed of the vehicle. With the change in the technology, the new speed detection devices used by the radar units are based on pulsed laser light, which is commonly referred to as LIDAR, rather than using the radio waves.

Similarly the modern radar detectors have been upgraded to alert to the infrared light emitted by such LIDAR guns. But the new radar detectors are not always effective to detect the LIDAR detection. This is mostly so as the output beam produced by the LIDAR guns 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 making it very difficult to detect them.

And that is why most of the time, the driver is caught unaware of the beams and they commit mistakes.So many of the new age radar detectors fail, mainly while detecting the focused beams produced by the LIDAR.

They do not scramble or absorb the many or all of their products do not affect radar and laser signals in any way. And if by any chance these products do transmit any type of radar scrambling pulses, then they are completely illegal and can invite legal action against the motorist.

So actually, 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.

There are many companies in the manufacturing of radar detectors. The popular of them are Escort, Cobra, Whistlers etc. When buying a radar detector, ensure that you are buying a model that has been approved by the concerned authorities.

Also look for the advanced features and go in for product comparisons wherein you can read the product reviews and also check with the pricing of the radar detectors.

Vijay

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Introduction To Radar Detectors

Posted on 08 September 2008 by admin

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Stefan Rockhaus asked:

A radar detector is an electronic device used by motorists to determine whether their speed is being observed or not by a police officer. The objective of a radar detector is to protect the motorist from getting a speeding ticket from the officer who is using a radar gun.

Radar detectors were introduced in the early 1970’s. The term radar detector originated from technologies that were used earlier to detect speed.

Now the question arises, “What is radar?” Radar is a system used to measure the speed and location of any object. This system consists of two important parts – a transmitter and a receiver. The radio transmitter causes voltage fluctuation by oscillating an electric current at a predefined frequency. This oscillation of the electric field generates electromagnetic energy. This electromagnetic energy propagates in the air as electromagnetic waves. A transmitter consists of an amplifier and an antenna. While the former increases the power of electromagnetic energy, the latter transits it into the air.

The basic function of radar is to determine its distance from the destined object. For this function, the radar device emits concerted radio waves to observe any echo. If any object comes in the way of the radio waves, then it can be easily detected by radar with the help of electromagnetic energy. Radio waves constantly travel in the air at the speed of light. The distance of the object from the radar is determined by observing the time taken by the radio waves to return.

For measuring the actual speed of any object, radar can be used with a fact called Doppler shift. When any moving object passes in front of the radar, its echo will reflect the signals of the radar. The time taken by the radio signals to return after striking the object, and the frequency with which they travel, gives the actual speed of that object. If an object is coming towards the radar, then the signals will come back in a shorter period of time. It will increase the frequency and tells the actual time in which an object will cross the radar. This process depends on how fast the frequency will change. Traffic police use radar in the form of a radar gun, which is either hand-held or vehicle mounted, to detect speeding vehicles.

A basic radar detector detects police radar with just a simple radio receiver. In contrast, detectors that are more sophisticated comprise of a basic receiver along with a radio transmitter. A jamming signal is produced via this transmitter. It blends the signal of the police radar gun with extra radio noise. Due to this, a perplexed echo signal is received by the police radar gun, and the exact speed-reading cannot be taken.

Light-sensitive panels are being used in modern detectors which detect the beams from police laser guns. Lidar is difficult to avoid due to its concentrated beam, so it is quite possible that by the time the detector is able to detect it, the vehicle is in the beam’s sight already. For that, speeders also use a laser jammer. It works much like a radar jammer.

In conclusion, there are several systems available to detect radar, but none of these systems is a sure shot way to get protected against speed detectors. However, one thing that can be done to avoid speeding tickets is to ‘slow down’.

Mike

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If You Want To Save Money On Your Purchase Of Radar Detectors Consider Buying Online

Posted on 10 August 2008 by admin

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Gregg Hall asked:

With the price of gas always rising, who can afford to soup up a car with toys like radar detectors?Thanks to wholesale detectors and online venues, just about anyone can purchase and fly down the highway with nary a care much less that of flashing lights close behind them.

Online stores especially have become a great source for wholesale radar detectors. Some specialize in detectors alone, providing even more insight to this marvelous electronic piece of ingenuity. Online distributors, thanks to their specialization, will also have more information particular to detectors compared to Radio Shack down the street and thus offer a wider selection and great in depth analysis.

Besides just specialty stores online, wholesale electronic disturbers can offer radar detectors at a lower cost. Additionally, consumers can find more wholesale electronic dealers online than radar specialty stores. Thus the average consumer with little time to search might want to utilize one of these dealers instead of spending hours trying to find a specialized vendor.

Beware of scams as you look to purchase your new radar. The online environment is ripe for ignorant consumers, and many scammers take advantage of the unlikely suspect. Investigate the credibility of the site before whipping out your credit card, and never give your credit information through an unsecure site.

Consumers annoyed by some of the inconveniences of older radar detectors will find themselves delighted at the newer models. For example, those constantly finding themselves tangled up in cord should take note of the new cordless detectors. Manufacturers have worked hard to develop technology that helps get rid of cords while not just maintaining solid detection but improving it as well.

Just under $200, the BEL Express Model 946 has impressed many consumers in search of a cordless detector. The Express features a clip on, 90 degree deflector and earphones. Not only does it look snazzy, but it works well: the Express tested exceptionally by reliably detecting Ka band radar and lasers. The less distinct audio quality is the unit’s only lesser feature.

Some consumers might be willing to fork over a little more cash for a better detector. The Escort Solo S2 runs a little over $200 and has the potential to satisfy the picky consumer. With a low profile compact case, it features all but one of its controls on the front. The Solo detects X, KI, Ka, and laser bands, and announces their strength through a highly perceptible audio alert and flashing bar graph.

Thanks to the demand by consumers and the innovation of manufacturers, this market will only continue to grow in quality and quantity. More companies are offering cordless models and continually improving their current models. With the increasing demand, we can only expect to see even higher qualities produced in time.

Vijay

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Radar Detectors: Help for First Time Buyers

Posted on 15 July 2008 by admin

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Christine Peppler asked:

Observing posted speed limits is obviously the most reliable method of avoiding costly speeding tickets. However, as most of us know, whether it is a lapse in attention, failure to see all posted signs, an instance of impatience, or a fear of being late, we all exceed the limit on occasion. For just these reasons, millions of drivers opt to invest in radar detectors to avoid the fines. Although radar detectors are banned in some countries and provinces, they are legal for passenger cars in all states in the US with the exception of Virginia and Washington DC.

There is a wide selection of radar detectors on the market and quite a bit of terminology to confuse first time buyers. However, the list of critical features that make a radar detector effective is rather short and once understood should make the purchasing decision a simple one.

The first choice a buyer will make is whether to purchase a corded, cordless, or remote unit radar detector. Corded radar detectors are the most common and can plug into a cigarette lighter or fuse box and are attached to the windshield. Buyers often choose corded radar detectors because they can be installed by the owner in seconds and don’t require batteries. The other primary reason for choosing these particular devices is that they are capable of detecting all bands of radar signals.

Cordless radar detectors on the other hand are sometimes selected as they offer freedom from cords. Unfortunately, these devices are generally less effective however as they do not pick up all bands and have a more restricted range than corded models. Remote units are permanently mounted elsewhere on the car and are often selected as they cannot be seen by thieves or law enforcement. Remote devices are generally higher priced and require professional installation.

Since the purpose of a radar detector is to provide warning that drivers in the area are being monitored, it is important that the device pick up the bands being used and that the warning provided is sufficient. Buyers need to compare radar detectors as far as the distance at which they will sense a radar signal. Obviously, devices that sense a signal from a longer distance provide more warning and thus greater protection. To be functional, a radar detector should be able to pick up X, K, and Ka bands to assure that they will pick up the signals being used for monitoring purposes.

Another critical feature on a radar detector is how effective the alert is when a signal is picked up. The display should be easy to read, in daylight or at nighttime. Radar detectors often use LED but others use LCD displays. New buyers should determine which type of display best meets their personal needs. For instance, some prefer a text display but others feel the LCD display is difficult to see in the sunlight.

Some displays do a better job of indicating how strong a signal is so that the driver knows whether or not the threat of being detected is imminent. Obviously, having both a visual and auditory alert is important as a visual only alert could be missed.

Some radar detectors offer digital voice alerts versus an alarm only alert. Experienced radar detector owners would also recommend volume control and a mute button! Some devices will even offer an automated mute that is activated when driving in slower traffic when both speeding violations and monitoring are less likely.

Many radar detectors also offer features that allow the sensitivity to be adjusted to help reduce alerting the driver when radar signals are picked up from other sources: i.e. a “city mode” decreases sensitivity in urban areas where signals are picked up from security and other systems within buildings and equipment. The ability to filter out unrelated signals helps to reduce false warnings.

Some consumers also prefer to have a feature to shield them from having their device detected. Some devices shut down after alerting the driver and others use signals to shield them without shutting down.

Obviously, one of the newer methods of monitoring drivers are cameras at intersections with traffic lights. Beginning in 2007, some radar detectors will be offered which are capable of alerting drivers to these monitoring cameras and might be a valuable feature for some buyers.

A final, but very important feature that buyers will need to consider is whether or not the device they are considering offers laser detection. Certainly the use of laser guns by law enforcement has continued to increase and buyers have incomplete protection if their device monitors only radar signals. Laser is particularly useful to monitor drivers that are closer than what can be accurately measured by radar. This in turn means that drivers who are monitored by laser signals have even less time to react. Good laser protection requires placement of a head or sensor on the front of the car, usually in the grill, and additional sensors to provide 360 degree sensing to assure all signals can be picked up.

As with most electronics, there are radar detectors with all the bells and whistles, all of the features to assure maximum protection, and they may be well worth the investment for those drivers who hope to avoid expensive speeding tickets. For others however there are also very basic devices which provide a crucial warning but are easily affordable within almost any budget.

Nick

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Radar Detectors

Posted on 14 June 2008 by admin

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Dhiraj Bandurkar asked:

Radar Detectors

For most of the drivers in the United States, radar detectors are common electronic devices that are widely used in the cars to determine if the speed is monitored by the police radar unit. The interesting part is that studies claim that the vehicles using radar detectors have a reduced threat of accidents whereas the police believes that vehicles using radar detectors have a greater risk of accidents. That it why, use off the radar detectors is illegal in some parts of the United States and most parts of Canada and other countries such as Australia. So before you want to buy a radar detector it is better to check with the legal guidelines on the use of it, that are prevailing in your state.

Lets understand how a radar detector works. In most of the cases, the radar unit bounces a radio wave off a moving vehicle with help of a radar gun that in turn determines the speed of the vehicle. With the change in the technology, the new speed detection devices used by the radar units are based on pulsed laser light, which is commonly referred to as LIDAR, rather than using the radio waves. Similarly the modern radar detectors have been upgraded to alert to the infrared light emitted by such LIDAR guns. But the new radar detectors are not always effective to detect the LIDAR detection. This is mostly so as the output beam produced by the LIDAR guns 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 making it very difficult to detect them. And that is why most of the time, the driver is caught unaware of the beams and they commit mistakes.

So many of the new age radar detector fail while detecting the focused beams produced by the LIDAR. They do not scramble or absorb the many or all of their products do not affect radar and laser signals in any way. And if by any chance these products do transmit any type of radar scrambling pulses, then they are completely illegal and can invite legal action against the motorist. So actually, 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.

There are many companies in the manufacturing of radar detectors. The popular of them are Escort, Cobra, Whistlers etc. When buying a radar detector, ensure that you are buying a model that has been approved by the concerned authorities. Also look for the advanced features and go in for product comparisons wherein you can read the product reviews and also check with the pricing of the radar detectors.

Jane

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