Question about Cobra ESD 9221WX Radar Detector

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Esd-9221 instructions i seem to have lost my instruction manual for my radar detector model no:esd-9221,can any one tell me what x,k,ka alerts mean???

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Re: esd-9221 instructions - Cobra ESD 9221WX Radar Detector Radar Detectors

How do you turn the thing completley off?

Posted on Oct 30, 2012

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Re: esd-9221 instructions

Hi, with just a quick look, i couldn't find a manual for you, but the x, k, ka are the different types of radar that the law inforcement uses. Here's a link that will show the freq's of the different bands.

Hope this helps you out,, Let us know. Mechanic

Posted on Feb 05, 2008

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My radar detector goes off everytime i accelerate. can i fix it or is it broke?

by going off do you mean alerting you or is the power turning off if it is alerting you you may have electronic interference in the car if the power is going off it may be as simple as a short in the power cord
cobra 773-889-3087 sells then for 10.00 or you can trade your old detector to them and get the next highest model at a discounted price

Apr 11, 2010 | Cobra ESD 7000 Radar Detector

1 Answer

I wanted to know what the symbols meant when they go off.

Ok X, K, and Ka are the type of radar bands the officers radar gun admits. The V is shown when an officer's gun can detect certain radar detectors. The S is a safety alert when emergency vehicles are near. BTW here is a link to a PDF manual that should be similar to your model.

Oct 14, 2009 | Cobra ESD 9117 Radar Detector

1 Answer


X, K, Ka, Ku (sometimes displayed as X and Ka together) are the radar bands that police use.

L is laser

Other alerts can include:
-Emergency Vehical
-Railroad crossing or Train
-Radar Detector Detector (that's not a typo) - used by police to find radar detectors usually when they are illegal in that state.

Every radar detector is very different and one manual won't really help with all of them. If you give us your model and brand we might be able to help.

Oct 08, 2009 | Radar Detectors

1 Answer

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 | Cobra XRS 9440 Radar Detector

1 Answer


Uniden has been out of the radar detector business for some time now. I would strongly suggest getting a different radar detector instead of using this older model since newer radar detector models generally have far better performance -- especially for detecting Ka band radar.

Anyway, Uniden's web site does not list an instruction manual for this particular radar detector model. Yet, take a look at the instruction manual for the most similarly numbered product model shown in the following link:

Uniden Owners Manuals -- Radar Detectors

One of the instruction manuals in the above link should be similar enough to your radar detector so that you can figure out everything regarding your specific Uniden RD model.

Apr 13, 2009 | Uniden Radar Detectors

1 Answer

I need owner manual and instructions for radar detector esd-7000

Here is a direct link to the PDF version of the ESD-7000 manual on Cobra's web site:


Mar 31, 2009 | Cobra ESD 7000 Radar Detector

1 Answer

Have a cobra radar detectors while I am in uSA but do not know what the different alerts mean. Can anyone tell me?

X, K, and Ka Superwide are the radar bands that are used by police radar guns. X band was the first band used for by radar guns, but is now the least used. All radar detectors that we carry detect all 3 of these bands.

Aug 03, 2008 | Cobra XRS 9330 Radar Detector

3 Answers

I have a cobra radar dector esd 737 and i sdoesnt pick up cops tell they are like not even a half a mile ahead of you and tips or ideas how to get it to work better

Detecting of radar or lidar emissions depends on mounting of detector.In My experience it is best to mount it just above windscreen wipers.You must check if your detector is visible from license plate level. This is important for laser detection. For other measuring devices it's only important to be visible.Higher mounting facing downwards will reduce false X and K/Ka signals.It will reduce detecing of true as well, so it is all up to you.You must know that laser detecting only covers your car.It d'ont matter if a cop is 300m or 1800m away.X band has a large emission, and it is easily detected.K/Ka band is a pulse emitting and has a lot narrow detecting point.It is effective at max 800m.In ether case speed can be reduced 20-30 km/h in city, and 30-50 km/h on highway.

Apr 25, 2008 | Cobra ESD 7000 Radar Detector

2 Answers

Radar codes

VG-2 is a technology that police use to detect radar detectors. Detectors with this feature will detect when VG-2 is in use, and alert you to its presence.


the x,k,ka codes you see flashing are......

X, K, and Ka Superwide are the radar bands that are used by police radar guns. X band was the first band used for by radar guns, but is now the least used. All radar detectors that we carry detect all 3 of these bands.

quoted by a professional at the Cobra industries for radar detectors, cb radios and electronics galore.
for more info see

Apr 20, 2008 | Cobra XRS 9330 Radar Detector

2 Answers


When "X" lights up, this means that your RD is either detecting X band police radar or that it is detecting an X band microwave automatic door opener.

When "K" lights up, this means the same as above except that the radar signal is a K band radar signal.

When "Ka" lights up, then this means that your RD is detecting police Ka band radar since no automatic door openers operate on Ka band.

When "VG-2" lights up, this is supposed to mean that your RD is detecting a VG-2 radar detector detector (RDD). Police use RDDs such as the VG2 and the Spectre to indicate that a motorist is using a radar detector.

Sep 10, 2007 | Cobra ESD 7000 Radar Detector

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