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These radios are great but why put talkback on a radio when itll only work on am..we use fm mainly in the there anyway of modding it so itll work on fm please

Posted by Stuart Eggleson on


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Vernon Taylor

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The short answer is no -- the difference between AM and FM is too great though some CB radios were made dual mode, like the President Veep I used to own.
Some CBs that found the way into Britain were powerful sidebanders that offered similar capabilities to unlicensed CB-ers to that official radio hams had to sit exams to enjoy. Some radio hams found it cheaper to have those top-line CBs modified for use on the 11 metre amateur band.

It would be no help to you to obtain a standard FM CB as when the UK was forced to legalise CB radio under the Treaty of Rome, they legalised it at a different frequency as the American frequency was already allocated to radio control, bleepers and other things. Special CB sets were manufactured for the UK market.

Posted on Jun 15, 2020


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My galaxy dx 88 hl works great but the talk back won't work on am but does work on pa what is wrong

if you hooked it up its wrong but I assume you didn't.First of all talkback is a feature that allows you to hear your voiceand you don't5 need a radio check because you can tell by your own voice how your radio sounds if you want it to work on am you need to attach a 33ohm resistor from the positive to the neg of the external and pa plug ins. the talkback will be on all the time by the way.

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I want to put talkback on my cb myself.

Hi Overton2525,

I used to install all these talkback and sound-effect devices in radios for the truckers, and most were so elaborate, that I did it in kit form. You must be pretty handy with soldering, so here we go with a bold little adventure. CB Radio Magazine has a nice inexpensive project that won't take very long to install.
Here's the link to their pages:

Your radio meets all the requirements for this project. Let me know how this Mod works out for you. Thanks.

Regards, Bill

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Just bought a 142gtl and looked it up online. I

Don't get crazy into mods. Some are good some are bad.

Really all you want to do is a peak and tune on it. The cobra 148 has great audio already. The most I would do to it is turn up the modulation all the way, and the AM power, then put a swing mod in. That will get you max wattage. 2 watt dead key.

Talkback is only necessary if you are going to be putting an echo board in so you can hear how the echo sounds.

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Galaxy dx-66 squeals on talkback

timspur, hi. First off, using the talkback with a tuned Galaxy will give you problems, so you need to use a good noise cancelling mic like a RK 56, or Astatic 636. If your running an amp, that will only amplify the problem. Here is a mod if your comfortable working on your radio, to tone down the TB volume.
Talkback can become distorted if these radios have been "peaked," and there is no cure because the talkback just amplifies what goes to the RF section. Try adding a 470k ohm resistor from junction of C155/R207 to the junction of C187/R235 on the solder side of the board. This will also give you clean talkback on SSB and FM. Try different values of resistance to get the amount of volume you want. The less the resistance the louder the talkback will be.**
Hope this was what your looking for,, I know for a fact that the Astatic mics do help tone it down.
Let us know,,, Mechanic

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