Question about Cobra 148 GTL 120-Channels Base CB Radio

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Signal meter please help i have fitted a new signal meter to my cobra 148gtl and now it will key up but wont output or recieve could someone help me with the wiring spec just in case i have wired it up wrong cheers col

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Re: signal meter

Also, make sure your jumper coax, the small piece of coax between the cb transmitter and the meter, is good, no broken center coax.

Rollin CBs

Posted on Jan 26, 2008

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Re: signal meter

The signal meter would go into the antenna path something like this:

Posted on Oct 07, 2007

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I have a cobra 29 Ltd chrome. I have had it over a year. The sig reads when not keyed up 1.3 but when I key up the Sif reads 7. Is My antana to long or is it my coax cable. The cable is new.

SRF. Switch position Is reading your reception and the output power on the meter at once. Cal is to calibrate meter for reading SWR. It is a multi use meter. S1 thru S9 is a scale measuring incoming signal.

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Need Cobra 148GTL with Cobra HG M75 pin-out color code

1audio. 1red
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3receive. 3blue
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Jul 03, 2012 | Cobra 148 GTL 120-Channels Base CB Radio

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How do u set up a cobra 148gtl 40 channel to here far away

hello there firstly you will need to raise your antenna has high as possible and buy a preamplifier this will raise the weak stations and give better signals hope this helps

Mar 20, 2011 | Cobra 148 GTL 120-Channels Base CB Radio

2 Answers

My new Astatic Road Devil will not transmit audio on my Cobra 2000, it came with a 4pin plug and I put on a 5pin 1 white(audio) 2 shield 3 black(recieve) 4 blue(common) 5 red (transmit) yellow(n/a)

recheck that you have the wiring correct. you will need the wiring of the cobra 2000/148gtl/grantxl... can't remember the pin outs. what you have posted is not the correct one??? i think.

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I have a Cobra 148GTL with a 5 pin side mount mic. My problem is that the radio powers up and all I get is a static type noise but no recieve and when I key the mic the meter shows I'm sending a signal but...

sounds like a bad mic....At the 5 pin end u will see a small screw take out that screw and slide the pin cover back and you will see the 5 wires going to the pins my bet 1 or more of those ends are broken all you ned is re sod. them and all will be good .....I buy alot of broken mics and all i need do is fix the wires easy fix .....

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Dec 02, 2008 | Cobra 148 GTL 120-Channels Base CB Radio

2 Answers

148GTL Cobra (no tx)

Bad transmitter. You can:
1) take it to a repair shop
2) get a new radio
3) repair the transmitter with a stock replacement transmitter
4) check the inside of the radio, make sure everything is where it's supposed to be
5) make sure that you are using the correct power supply for the unit

If the problem is too extensive and you consider getting a new radio similar to the 148GTL, try the Galaxy DX 2527. It's a BIG radio. But it's production was discontinued. If you can't find a Galaxy DX 2527, try a Galaxy DX 2517, it's similar to the DX 2527, but with less features, but has great sound, I get nothing but good comments when I talk on it. The DX 2527 has an okay transmitter, it doesn't sound all too good by itself, so that's why you have the echo and robot voice changer options.

Hope this helps!

Oct 12, 2008 | Cobra 148 GTL 120-Channels Base CB Radio

4 Answers

Cobra 18 wx st cb problem

Sounds to me like your finals in the rig have blown stopping you using the CB mode, Either that or you have a loose connection on the power output inside the radio.

Mar 15, 2008 | Cobra 18 WX ST 40-Channels Base CB Radio

1 Answer

Cobra 148GTL

Hello k007,

It sounds like you may have damaged the RF power amplifier stage of the CB. Since you were adjusting the antenna characteristics. Did you have a SWR (Standing Wave Ratio) meter connected while you were tuning the unit? If you did you might have noticed the needle go past the 1.2 mark when you were adjusting the antenna or the unit itself. In any event I think that the RF power Amp is shot.

Thank you,

Nov 04, 2007 | Cobra 148 GTL 120-Channels Base CB Radio

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