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What are radar detectors for cars and why do people use them?

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  • Marvin
    Marvin Jul 05, 2019

    These are ******* in most states.

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I was asking myself this same question a couple of weeks ago when my friend mentioned his in conversation. I read a guide on Dig My Ride all about them, so I'll pass on what I learned.

Basically, radar detectors are passive pieces of equipment that can identify when a radar signal is being passed over your vehicle. In contrast to radar jammers, they can't disrupt or interact in any way with this signal, they just detect it.

People tend to use them as a kind of early warning system so that they get notified when the police are checking they're a vehicle with a radar gun to see if they're driving over the speed limit. Motorists who have radar detectors can determine when this is happening and reduce their speed limit accordingly.

Of course, it shouldn't really be necessary as you should always be driving within the speed limit regardless, but that's why people use them.

I hope this helps to answer your question!

Posted on Jul 04, 2019

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6 Suggested Answers

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6ya staff

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Posted on Jan 02, 2017

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Marty marty

  • 883 Answers

SOURCE: cordless radar detector

verify power to unit.

Posted on Jun 04, 2007

Anonymous

SOURCE: Bel RX65 Radar Detector

Call Beltronics tell them you have an RX65 out of warranty. They charge about $65. When I did mine I sent them only the detector and they also set me a new cord & suction cups.

Posted on Sep 16, 2007

vista90

  • 2 Answers

SOURCE: Cobra radar detector speaker replacement

I called cobra support(777-889-3087) and it was around $6 plus shipping for a replacement speaker.
the correct phone number for cobra support is 773-889-3087 and can be found on their website.
Cobra was very courtious and I also got my replacement speaker for my XRS-9500.!

Posted on Nov 13, 2008

taran_2005

taran_2005

  • 10515 Answers

SOURCE: what is voltage of cobra rdl 512sw radar detector

Hi,

It's 12V DC!!

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Posted on Jul 15, 2009

greenspan

Remmy Moore

  • 1734 Answers

SOURCE: user manual for the RJ-72 Super Cat radar detector

Ask http://manualfox.com

Posted on Jul 25, 2009

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Cheap check is to eliminate the charger. If that don't fix it, apparently your detector is bad.. Good luck!

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How does it work


Radar detectors are similar to radio receivers that are in your car or home. Radio receivers pick up signals in AM and FM frequencies. Radar detectors find the frequencies that are used by police officials using radar guns. Once the radar detector finds a frequency being directed at your car, it signals the driver somehow, most likely by beeping. It is a simple technology. Although, as law enforcement agencies expand the frequencies to detect speed, companies need to produce more radar detectors

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What does VG2 mean


It is a radar detector detector. So if you are running a radar in a state where it is illegal, this technology can detect the presence of your radar detector and you can be pulled over and ticketed. This is done by detecting the local oscillators and other "RF leakage" from the radar detector.
Sometimes you may notice that when you are near another car with a radar detector, your radar detector may go off. There are situations where your own radar detector can detect leaking RF energy from another detector in a nearby car.

Sep 09, 2009 | XRS 9330 Radar Detector

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What is pop and spector mean


POP is a type of radar mode which only a couple of radar guns have. In essence, radar gun in POP mode emits an extremely brief signal to measure a car's speed. This brief signal lasts for less than 1/5 of a second. POP mode can not legally be used to write speeding tickets since it is not as accurate as the radar gun's normal operating modes, and since POP mode provides absolutely no radar tracking history.

Most people turn off POP mode in their radar detector's options since POP radar is very rarely encountered and since users experience excessive false alerts with POP turned on.

Spectre refers to the Spectre radar detector detector (RDD) which police use to locate drivers who are using radar detectors. The current Spectre models in use by law enforcement are the Spectre III and IV models. Some Cobra radar detectors claim to be able to detect the Spectre I. This is of no value since all Spectre I RDDs have been upgraded to later Spectre models which Cobra radar detectors can not detect. In short, turn Spectre detection off since this feature is a needless source of false alerts.

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Cobra XRS 9440 will not detect police radar. Does not alert when I drive by a police car. How can I fix this problem? Is there a way to change the settings so that I can be alerted when there is police...


Radar detectors are not police detectors. Radar detectors only alert to police when the police have their radar guns turned on. Most police officers operate their radar guns in "instant-on" mode rather than leaving their radar guns turned on continuously. Instant-on operation involves very briefly turning the radar gun on for up to a second or two in order to get a vehicle's speed.

Cobra radar detectors are known to have great difficulty detecting the 35.5 Ka band radar gun frequency. This should be considered a serious problem since 35.5 Ka is the second most popular Ka radar gun frequency following the most commonly encountered 34.7 Ka radar gun frequency. There isn't much that Cobra can do about this issue since their competitors hold all of the really good patented solutions for detecting 35.5 Ka police radar while ignoring false alerts caused on this frequency due to other radar detectors.

Apr 16, 2009 | XRS 9440 Radar Detector

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Questions


Ku is a band of radar used in some places by law enforcement. It is not used everywhere and can be a pain if it goes off for no reason. I recommend consulting your manual and turning the Ku band off if it is not used in the area in which you live. This will enable your detector to become more reliable for when you are being "zapped" by law enforcement

Pop is a way of using radar where the officer turns his radar on and off quickly. As a car approaches, they will turn the radar on long enough to get a speed reading, then immediately turn it back off to avoid detection by civilian radar devices. Some of the newer models of radar detectors have a feature which detects pop radar.

Every electronic device emits a frequency. Vg2 is what law enforcement use in states where radar detectors are illegal to identify whether a car is using a radar detector. The newer version of vg2 is called spectre and accomplishes the same thing. Some radar detectors can pick up on vg2 and spectre so the owner can turn the detector off before they are detected by law enforcement.

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BELTRONICS 940


This is a somewhat common problem that occurs when a strong voltage spike while starting your car damages the radar detector. Bel can fix your RD. Once you get it back, always start your car first before powering on your radar detector. Likewise, power off your radar detector before turning off your car's ignition.

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This is caused from voltage fluctuation. Your car will draw down power from the radar detector and it goes off. Passport/escort need to come out with an inline voltage conditioner. Maybe soon.

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Help!


If you live near a cell-phone tower, your radar detector can pick up on the waves coming from it. If you like in an area where radar detectors are legal and Ku band is not used, I recommend turning off the vg2, spectre and Ku bands on your detector. This will not only cut down on some of the "noise" but also make your radar detector more reliable for when you are actually "zapped" by law enforcement.

Mar 31, 2008 | XRS-757 Radar Detector

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