Cobra MicroTALK walkie-talkie mdl pr4750wx and squelch always on.

SOURCE: Constant RX mode on Cobra Microtalk Walke Talke

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."

SOURCE: i am looking for a

http://www.cobra.com/downloads/manuals/PR900_manual.pdf

SOURCE: I need an owners manual for a set of Cobra

Hello.
Welcome To Fixya.

I'am Glad to help You Sir.
I can't Find Your specific Model Number But i thought that You may find it your self in this page.

Please click here to get the manuals page for your product.

also Please Give a good Feedback.
So i can help You Further.

SOURCE: I too need a charger for the Cobra microtalk Walkie Talkie

u can use a phone charger as long as the jack is the same as your jack, walmart has about any kind they make.

SOURCE: Constant RX mode on cobra microtalk PR3850WX

Sounds like the radio was subjected to electrostatic discharge. If you have your manual, and it describes a way to do a "master reset" on the radio, follow the instructions. This usually involves pushing down on one key while turning the radio on. Otherwise you have to find a licensed dealer for factory service, as there is no way to repair the radio yourself. The use of surface mount technology still confuses many Techs unless they have been to a company's two or three week seminars.