Question about Galaxy Radios DX-66V Base CB Radio

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I KEY MIC AND SOMETIMES WON'T TRANSMIT. TAP ON

I KEY MIC AND SOMETIMES WON'T TRANSMIT. TAP ON CASE AND IT TRANSMITS

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Cold solder joints are a known bugaboo with these radios......

Posted on Feb 13, 2010

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'mic gain' adjusted for optimum amount of modulation?

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You mean NO Audio Transmit?
If there is No Audio at PTT Bad MIc Cord.
Change the Mic cord.

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Transmit problem


you have a short circut some where..use the eraser on a pencil and push solder joints...

Aug 03, 2012 | Connex 3300 240-Channels Base CB Radio

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Cx80, what does the code "rx" mean on the display



  • TX = Transmit. RX = Receive. Does your needle move when you key the mic? Does it modulate when you talk in the mic? Do you have an inline watt/SWR meter inline? What kind of a set up do you have? Mobile? Base? Get back to me if you want further help.
Regards, Tony

Oct 18, 2011 | Cobra 29 LTD CB Radio

1 Answer

Won't send out. I have replaced mike already.


if the Mic gain is up. and an antenna is connected. its possible that the transmit circuit is blown out. this is definitely the case if you have been operating the radio and the red ant lift has been lighting when you key up. that means your antenna was not tuned to the radio and your swr was too highroad. swr is standing wave ratio. basically if the antenna is not exactly the right length thenyou create a standing wave that does not leave the antenna and bounces back down the coax into the radio which destroys the transmit circuit. if when you key and there is no signal output then it is shot.

but make sure the cb pa switch is on cb.

Jun 15, 2011 | Cobra 29 LTD CB Radio

1 Answer

Transmits but does not receive. cobra29LTD Can it be a active copponent


where is the RF gain? It should be all the way up.

The other thing that can cause no receive. Its a common issue. If you have a mic with a broken wire in cord, if its the wire for receive, then when the key is released the radio will not go into receive mode. The switch in the mic determines weather the radio is in transmit mode or receive mode.

So make sure the RF gain is on max, and try another mic.

Sep 26, 2010 | Cobra 29 LTD CB Radio

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

Lose tansmit


u have a cold soder joint or a crack in the board get a sordergun and just resoder ares all aroun the mic input

Apr 03, 2009 | Cobra 148 GTL 120-Channels Base CB Radio

1 Answer

Cant transmit


Hello Darren, Yes it sounds like the mic is wired bass ackwards,,! A cobra 25 mic wiring is
PIN #1- Shield or ground wire
PIN#2- Audio or Transmit modulation
PIN #3- Transmit or Dead Key
PIN #4- Receive Audio.
When your keying the mic, the RX wires are being connected to make the RX work,,,
*** Let me know how you get along with it. Either buy a new mic wired for your radio or you or someone comfortable with soldering needs to resolder the correct wires back on the mic plug,,,Like I said, let me know and have a great day,, Mechanic is back quiet!

Oct 21, 2008 | Cobra 25 LTD 40-Channels Base CB Radio

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