Tag Archive | "Radar Gun"

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Answering Your Radar Detector Questions

Posted on 16 November 2008 by admin

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If you have ever been pulled over for traveling above the speed limit then you know how important a radar detector can be. These tiny devices can greatly reduce your chance of getting pulled over for speeding but do you know how they work? It is one of the technological advances that we seem to take for granted.

Most of us have no clue beyond plugging them into the cigarette lighter and mounting them on the dashboard. But are they legal? How do they work? Those are just a few of the questions that you should have when it comes to radar detectors. This is your lucky day.

This article will cover the basics of radar detectors and hopefully by the end you will have some idea of why a radar detector can mean the difference between a speeding ticket and getting to keep your money and your insurance rates low.

What is a radar detector?

A radar detector is a device that measures the radio waves bounced off your vehicle. Police officers use a radar gun that gives off radio waves. When the waves hit your vehicle they are returned to the gun to determine how fast you are going. The radar detector measures these waves and alerts you to the presence of someone using a radar gun to detect your speed.

What is a radar jammer?

A radar jammer is a device that will scramble the radar waves and the LIDAR that are aimed at the vehicle. It is important to know that radar jamming is illegal in the United States and if you get caught with a radar jammer you are facing a fine and possible felony conviction for using one. It is definitely not worth the risk to own one.

What are some brands of radar detectors?

There are several different brands of radar detectors on the market currently. You can choose from a Beltronics BEL RX54 radar detector or you can go with the Whistler XTR-690 Radar/Laser Detector. The choice is up to you and it may come down to what guarantees the company offers along with the price.

Is there a guarantee that I won’t get a speeding ticket if I use a radar detector from a certain company?

There are companies that will guarantee that if you purchase their radar detector and still receive a ticket within a year, they will pay for the cost of the ticket. This guarantee is not offered by every company so you will need to check the fine print before you purchase one if this is something that you are looking for in a radar detection company. The company may also have some fine print about paying for the ticket so read, read, read the instructions and guarantee before purchasing.


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is there a problem with cobra radar detector?

Posted on 09 October 2008 by admin

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hulio asked:

I have now passed 3 cop cars in town and it didn’t alarm me. was there radar gun not on or is the cobra broke. can cops turn off their radar?


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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’.


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