Question about 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

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First of all, conditions need to be right to "hear far away". The current skip conditions favour daytime for listening long distance on 11 meters (cb). For this, you will not need an antenna up very high. Indeed, I have an Antron 99 mounted about 12 feet off the ground and have made contacts over 4,000 km away!

Posted on Nov 30, 2011

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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

Posted on Mar 20, 2011

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


1audio. 1red
2shield. 2shield
3receive. 3blue
4switching. 4white
5transmit. 5black

Hope this helps

Jul 03, 2012 | Cobra 148 GTL 120-Channels Base CB Radio

1 Answer

I have a Cobra 148 mounted on the hump in a pickup truck and it works fine. Then I plugged in a old Turner +3 desk microphone and I get bad feedback when it is keyed up and I can also hear my voice thru...


You're most likely getting lots of RF feedback from the metal cab of your truck,combined with the real sensitive nature of the amplified Turner mike.I would put an old original Cobra (coffin mike) handheld mike or a Astatic Roadking 56 (RK56) on it.They are really hard to beat,especially when you have lots of feedback & squealing. I also have a 148GTL (malaysia made) that has a Turner +3 deskmike & it squeals in my truck but not in the house. The 148GTL has given me better service than ANY other radio I've owned.It has 120 channels (freeband) & upper & lower sideband. I think mine is a 5pin Cobra-type plug-in. Try a simpler mike & good luck. Squirrly

Mar 13, 2011 | Cobra 148 GTL 120-Channels Base CB Radio

1 Answer

How much do thay cost


They are no longer made. ebay it. for a used model don't spend more than $150 for one. Even when they were new they were barley over $250... I can put you on a list if you want me to find one for you I have several customers on a list looking for cobra 148gtl old ver. and the 99v's.....

Dec 31, 2010 | Galaxy Radios DX-99V 40-Channels Base CB...

1 Answer

I have the cobra 29 classic k40 antenna. The antenna light comes on when keyed up on 40 but only channel 40. I used an swr meter and that's as good as I can get. Is this ok?


Normally the swr should be set on the centre channel so if you have 40 channels you should set it on channel 20. This is because as you move away from channel 20 the swr rises slightly more for each channel away from the 20. If you set it on channel 40 you'll have twice as much swr on channel 1 more than if you set it on channel 20. If the swr metre shows 1:1 (i.e. doesn't move up at all) on channel 20 the rest should be ok since the antenna was designed for CB. You should however check that the needle showing reflected power doesn't go above 2.5

Jul 29, 2010 | Cobra 29 LTD CB Radio

1 Answer

I have a cobra 148gtl that has 26 meg and high


VR10,,tuneL37,L38 you can remove TR24 it's for
modulation,but it may over modulat if removed.
that will get you started.

Aug 27, 2009 | Cobra 148 GTL 120-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,
Shuttle83

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

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