Question about Cobra MicroTalk PR 1100 WX (15 Channels) 2-Way Radio

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No Auto Squelch on Cobra PR4700WX

I have a pair of these radios and like them a lot. One is stuck with no squelch. The other works fine. I have turned on and off the Auto Squelch/Max Range function but the static is not squelched. Is there an internal adjustment to tweak the level?

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  • 91 Answers

Yes sir, when u will open the set u can find two potentiometers , one is for tranmitter another for receiver . Try adjusting the same ( second radio should be transmitting ) do not switch one radio without antennae it may burn ..
Regards
raj/

Posted on Apr 12, 2009

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1 Answer

Everything seems to be working but have no sound or squelch.


what kind of radio? It could be a number of things from a transistor to a transformer . Could also be a bad switch .Check your contacts on the squelch switch to make sure they are secure and if its a cobra or any other radio where the squelch and volume are on the same switch make sure those contacts are secure Could also be your final or driver in which I would change both.

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I think its vr6 in that radio but you have to turn it till you hear noise. did you use a signal generator to set the squelch?

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How do i adjust the squelch?


Turn the squelch control clockwise just enough to cut the background noise, this should work well for local communication.

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Cobra PR4750WX - how do I adjust squelch?


You are right there is no adjustment. You can however turn the squelch off and this maybe what is happening to you.
To turn the squelch off you press and hold the button that is just below the push-to-talk button for at least 5 seconds.
To turn the squelch back on, you either press (less than 5 sec.) and the same button or change channels.
When talking with a specific party or group, you should use the tone coded squelch (CTCSS) and that will mitigate the noise if you are not already doing that.

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Squelch doesnt work


Open the component / speaker side cover on the radio, adjust VR3, this is the alignment control for the squelch. Set your squelch control knob on the front of the radio to about 10 o'clock and slowly adjust VR3 until the signal from the speaker is mute.

When you turn the squelch back to the 0 position, you should have signal with no squelch as in normal operation.

Thanks!
Dodgem

http://dodgem250.angelfire.com

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