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Radio squeals part time and meter only goes up half way when keyed up

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You have a Microphone problem.. change your Mic. Mine done the same thing when Mic wires shorted together inside of the handpiece. Also, when it doesn't match the Ohm impedence. you can buy a replacement Mic at www.copperelectronics.com or Radio Shack.

Posted on Apr 01, 2011

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Why is humming coming from speaker when mic is keyed?


this is strange as most times if a proper transmit key is depressed , then the radio switches from receive to transmit , the mfg know this would cause some great squeal from receiver /transmitting so close to a receiver so the part that is the receiver is muted to keep this from happening , id say there is some fault in the part that does this muting of receiver

Apr 13, 2016 | Radio Communications

2 Answers

How do you turn down the modulation on a uniden pro510xl?


Not getting enough voltage or amps will make them squeal,also. Run both the amp & radio directly to the battery using some heavy wire. I use #8,but I would like to have some #6. Also,those stock little mikes on the 510 are a lot to be desired. Get someone to let you try a GENUINE Turner Roadking 56 & see if it still squeals. Lots of good tweaks on CB Tricks site. Good luck.

May 14, 2014 | Uniden Bearcat Pro PC68XL CB Radio

1 Answer

How do i set my galaxy dx 88 hl so the talkback is on all the time


turn the talkback knob to the right and push it in to engage talkback.when you get the volume you want leave it alone .Now key the mic.You will probably hear a squeal coming from the speaker.Now turn the volume down on the talkback knob until the squeal goes away.If you run your RF gain wide open it may squeal also.

Sep 25, 2013 | Galaxy Radios DX- 88HL Base CB Radio

1 Answer

Meter only goes half way when keyed up and squeals part time even with different mic


Try turning your echo back or off..Sometimes when the echo is turned up to much you will get a squeal.Have you tried turning your mic gain down some?

Mar 31, 2011 | Radio Communications

1 Answer

CB Squeal When Transmitting


I believe the coiled coax may indeed be the problem. To check, try a temporary rerouting of the cable which eliminates the coils. Dave g.

Dec 20, 2008 | Galaxy Radios DX-44V 40-Channels Base CB...

1 Answer

Will not stay on 11 meter turn it off comes back on 10&12 meter will not transmit am or ssb recieve ok. rci 2995dx.


Hello janetsue, If this radio has the blue or green screen LCD face then this is a default that is built into the radio. It depends on how the radio was "converted" when it was bought new.
It will not key up on 10 or 12 because of the default. A little more info supplied would be real helpful,,,, Let me know, Mechanic

Nov 01, 2008 | Ranger RCI-2995DX Base Scanner

1 Answer

Meter and St lights


The backlit nightwatch lights can not be repaired, they are fiber optic lights that are ran through the faceplate by the factory.

As for the squealing, the normal way talkback is installed on these radios is to solder a resistor, 68 oms up to 100 ohms, from the PA to the External speaker on the solder side of the PC board. The more resistance, the lower the talkback volume. Yourse is probably squealing because the resistor is breaking down, I just fixed a radio 2 days ago with the same problem. If you want to remove talkback, just open the case, flip it tothe solder side, and remove that resistor that was installed, or you can replace it with a new resistor and still have talkback.

The meter is fairly easy to replace, you just need to get a new meter, make sure it is one for the Cobra 29 (it will have the 3rd line to show SWR reading, which the Cobra 25 does not). You remove the case screws, the face plate screws, and then remove one screw and loosen the other that hold the meter inplace. You will have to solder the two wires to the new meter, observing which post they came from, this will determine the direction the meter swings. You just remove the light bulb and put it in the new meter casing with the rubber stay. This will be self explanatory when you open the radio.

Now for the dead key. It may have had a swing mod done, which drops the dead key down a couple watts. This is actually a good thing. If you have a lower dead key, this will allow you a larger range of power to swing. You can tell if it has had a swing mod by looking at JP36 to see if there is a jumper or a Capacitor installed. If there is a capacitor, the it has been done. To change back to factory, remove the resistor that was soldered to the solder side, across the capacitor, then remove the capacitor. Now just install a jumper in the place. Here is a link to the Modification Instructions, so you can get a better understanding:

http://cbradiomagazine.com/March%202007/Cobra%2029%20LTD%20Super%20Modulation%20Modification.htm


If I left anything out, or you have more questions or need further clarification on anything, don't hesitate to email me rollincbmods@yahoo.com.

Dean PItts
Rollin CBs

Aug 07, 2008 | Cobra 29 WX NW ST 40-Channels Base CB...

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