Question about Cobra PR4100-2WXVP 2-Way Radio

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Constant RX mode on Cobra Microtalk Walke Talke

I use walkie talkies in my business and I have a couple that constantly have the receive mode on. Anytime yoy try to transmit from one of them or from any other of the walkie talkies, it transmits a loud static until you push a button. The only thing different on them from the others that don't do this is that on the left side, the RX is constantly on. I can't figure out how to get it off.

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  • CleanRightCo Jul 07, 2008

    Thanks for the help, but unfortunately this did not fix the walkie talkie. The problem is that the RX symbol is constantly on the screen and anytime someone tries to communicate to it or from it, all it does is transmit static.

    Any suggestion?


    Thank you

  • Agentpilsner Sep 29, 2008

    I have this Cobra LI 5600 radios and I am having same problem with one of the handsets.

  • Anonymous Oct 24, 2008

    I have the microtalk and also have the same exact problem

  • Anonymous Jan 24, 2009

    same problem on my radio....any solution

  • csdean007 Apr 30, 2009

    same thing with the cobra li 7200

  • Bernard Russe
    Bernard Russe Mar 15, 2019

    How do you solve this, i have the same problem

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I have the same walkie talkies and on mine I can hold down the mode/lock button and it will come off of the Rx mode. Also, you should be able to press the talk button and it will come off of the Rx mode.

Posted on Dec 04, 2008

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Hello CleanRightCo,

Many two-way radios have a Monitor function that disables the squelch control. The squelch is what keeps the radios quiet when they are not receiving an incoming signal. However the squelch feature can also cause weak signals to cut out and not be understood, so the Monitor function provides a way to disable the squelch in those circumstances. It sounds like you have the Monitor enabled / squelch disabled on the units that you hear constant static.

For the Cobra MicroTalk 4100 it appears that you enable the monitor by holding down the Light/Max Range button for 5 seconds until the radio beeps twice. You may have activated this function inadvertently. To disable the monitor and re-enable squelch simply press the Light/Max Range button again or change channels.

If this doesn't fix the problem there may be a problem with the auto squelch function on the radios. Or the channel you are operating on may have a noise level that is above the radio's squelch level. You can try changing channels. Or another possible solution would be to activate the CTCSS (Continuous Tone Coded Squelch System) on all the radios. This function will mute the radio's receiver unless a signal is received from another unit using he same CTCSS code. This should keep the units quiet regardless of the noise level on the channel. However all the radios MUST be set to the same CTCSS code or they will not be able to communicate with each other.

Best Regard
Ken
"Go Ahead. Use Us."

Posted on Jul 07, 2008

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