Question about Cobra 148 GTL 120-Channels Base CB Radio

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Microphone I'm using a roadking rk 56 mic and when ever i key up no transmitting but the meter moves as im speaking. is this a mic problem or a radio problem

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  • Anonymous Sep 28, 2008

    wireing a super star dm 452 to a cobra 142 gtl

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  • Master
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Hi,

If the radio receives OK and the TX red LED will not lit up when keying the mic, then it is a mic or mic cord or mic connector problem (or pin configuration). Internally to the mic, there is a switch for keying the PTT. This should be check down to the coiled cord to the connector.

If all of the above checks OK, then you would need to check the TX/RX regulator/switching circuitry.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Posted on Jul 31, 2008

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Posted on Jan 02, 2017

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1 Answer

Microphone not working


I think it is safe to say 90% of radio problems are microphone. You get a cheap one when you by just about any radio. I believe you are seeing the meter move but not getting audio from your talkback. No matter remove the mic jack plug from radio. For you particular radio looking at the end of the jack notice the small raised numbers. These female connectors no matter the mic type wired for this radio model has the following wires connected or in your case disconnected. 1-(Ground) 2- (Audio) 3-(Transmit) and 4- (Receive).
A RK56 mic would be my suggestion Astatic 636L the second choice a little cheaper but audio it not a crisp.
Don't waste your money a repairing the mic or buying a diesel or road pro or even a cdl mic like a cdl 56 or that Skythumper they are RoadKing 56 wannabees. Sorry about the rant my point is RK56 is Quality.

Apr 12, 2013 | Galaxy Radios DX-959 40-Channels Base CB...

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Mic plug wiring diagram for connex 3300


Stock
1- Shield (Ground)
2- Yellow (Audio)
3- Red (Transmit)
4- White (Receive)
This is the stock mic wiring but why bother just order a RoadKing 56 it is already wired for your radio. I suggest Copper.com dont even consider a Skythumper it is cheaper but the quality is not there.

Nov 12, 2011 | Radio Communications

1 Answer

NEED TO WIRE LESON MICROPHONE TO MAGNUM 257


Notice the black mic plug has the numbers it is solder by numbers. Used rosin core silver solder radio shack sells it.
Mic Wiring
Stock
1-Shield (ground)
2-Yellow (audio)
3-Red (transmit)
4-White (receive)

Astatic
1-Shield & Blue
2-White
3-Red
4-Black
Yellow NC
Turner Roadking 56
1-Shield & Red
2-White
3-Blue
4-Black
Yellow NC
Sadelta the is a BASE mic
1-Shield
2-White
3-Brown
4-Green

Oct 02, 2011 | Magnum 257 CB Radio

1 Answer

Cobra 29 ltd classic: i can hear other cbs but can not transmit out also the light is out on the meter


The most likely cause broken wire in mic a nice Roadking 56 would be a nice addition with better audio than factory mic.
The meter light is unrelated they burn out and can be replaced without replacing meter. Different colors and rainbow lights that chenge if you prefer. I find them annoying.
Good luck
Cobra Highgear mics are sold in Pilot truckstops that is a cheap replacement. There are the versions basic,noise cancelling and power mic. The power mics are for stock unmodified radios and will mostly squeal on a tweak radio from cb shop.
Durablity and quality audio tone for the price goes to the RK 56 mic they are about 70 bucks with tax at pilots.

Aug 14, 2011 | Radio Communications

1 Answer

RK 56 Mic what order do the wires go on the connecter?


on the RK-56 mic is like this,but I don't know
about your radio.

red and shield= common or ground
white.............= mic audio
blue..............=TX
black............=RX
yellow not used

maybe this will help

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2 Answers

Roadking 56 mike


cbtrick.com mic section

Aug 29, 2009 | Magnum DeltaForce CB Radio

1 Answer

When mic is keyed, TX light illuminates but power meter does not


make sure your s/rf switch is in the right place on the radio is the most common problem i have found

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2 Answers

Wiring diagram for a road king 56 4 pin mic


4pin roadking 56 wires came off need to know where they go 1 thru 4

Dec 01, 2008 | Magnum DeltaForce CB Radio

1 Answer

Need a mic wiring diagram for a emperor ts-5010 rk 56 mic


EMPEROR
TS-5010

Stock Mic Standard Hookup
1 - Audio
2 - Shield
3 - Transmit
4 - Chnl UP
5 - Chnl DOWN

For Turner RK56 mic

1 - White
2 - Shield & Red
3 - Blue
4 - N/C
5 - N/C
Black - N/C
Yellow - N/C

Hope this gets you talking on your new mic. Reply back or email me rollincbmods@yahoo.com if you need more assistance

Dean Pitts
Rollin CBs
Mt. Vernon, TX

Jun 03, 2008 | Radio Communications

6 Answers

Mic wiring diagram


Same as Omega
#1 Mic Audio
#2 Receive
#3 Transmit
#4 Up/Down for channels
#5 Ground/Shield
#6 13 volt

Jan 13, 2008 | Magnum DeltaForce CB Radio

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