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Cant transmit on Cobra PR 4750 WX.

The radio turns completely off when I hit the transmit key or the call key. Works the same on both radios. Batteries are good and Receive side looks Ok

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  • 217 Answers

It sounds like you have a shorted RF output transistor.

Posted on May 02, 2015

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Posted on Jan 02, 2017

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1 Answer

Cobra microtalk Cxt135C one radio seems to be muted, there is no sound coming from it at all -


Check to see if you have "tone squelch" or CTCSS enabled. It will only receive transmissions from stations that are transmitting the tone your radio has selected.

Oct 15, 2013 | Cobra MicroTalk PR 1100 WX (15 Channels)...

1 Answer

Cb transmit noise


Its just RF feed back, that's normal, try to re-route the coax, or just turn the FM down, o try turning your modulation down....hope this was helpful....

May 29, 2010 | Cobra 75 WX ST 40-Channels Handheld CB...

1 Answer

Cobra 29 wx st


IF YOU CAN RECIEVE THAT IS A VERY GOOD SIGN THAT YOUR SWR MATCH IS OFF....I DONT KNOW IF YOU MATCHED UP YOUR RADIO WITH YOUR ANT.IF NOT YOU CAN BUY A CHEAP SWR METER @ RADIO SHACK...CHECK THAT YOUR COAX CABLE IS OK TRY TO REPLACE THE COAX......GOOD LUCK

Feb 14, 2009 | Cobra 29 WX NW ST 40-Channels Base CB...

1 Answer

No Auto Squelch on Cobra PR4700WX


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/

Dec 24, 2008 | Cobra MicroTalk PR 1100 WX (15 Channels)...

1 Answer

Tranmitting


one of the units may have a bad mic element. Can you hear the speaker unmute when the radio is keyed?

Jul 30, 2008 | Cobra MicroTalk PR 1100 WX (15 Channels)...

1 Answer

Transmitting


Hello lstimpson,

You may have the CTCSS privacy code function enabled on one radio and not on the other. This function keeps your radio's received muted unless it receives a signal from another radio using the same privacy code. If you have Privacy Codes set for radio A but not for radio B you will still be able to transmit from A to B but when you transmit on radio B your signal will not be heard on radio A.

Make sure that both radios are set to the same privacy code or that the function is turned off on both radios.

Best Regards,
Ken
"Go Ahead. Use Us."

Jul 19, 2008 | Cobra MicroTalk PR 1100 WX (15 Channels)...

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