I am looking for help on if I can rewire a Motorola mic to be a cb radio mic. I looked through this thread and only saw one topic on this but it was a 6 pin. My cb is a uniden 5 pin and I just wondered if it can evenbe done. Thanks in advance.
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Motorola mic for cb
- Thread starter Nozzleman71
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If you mean a motorola mic from a commercial radio, then no it wont work.
A mic from a motorola cb, then maybe.
73,
n9zas
Ok thanks I saw online where a guy had done it and I have a buddy who said he could do it. Just trying to see if it would work. Thanks again
If you like motorola mics then how about something like this?
I used to have the base pictured, and would probably buy one again.
Motorola CB Radios
73,
n9zas
I used to have the base pictured, and would probably buy one again.
Motorola CB Radios
73,
n9zas
Thanks I will check it out. And yes I do like the moto mics.
mmckenna
I ♥ Ø
While not a Motorola microphone, I did something similar about 20 years ago with a Shure hand held mic. The CB I had at the time had an annoying little square mic that was uncomfortable to hold and use. I tried figuring out the pin out between the two and couldn't get them to work. While the Push to Talk is usually an easy contact closure off the switch, getting the mic part to work was a no-go.
So, what I did was take the little CB mic apart so it was just the cable, mic and the leads that went to the switch. I gutted the Shure mic, except for the PTT switch and put the old CB mic element in side and wired up the PTT switch. I had to get creative with a hot glue gun to hold all the parts in place, but once done, it worked great.
A lot of the Motorola radios have electret microphone elements, and the mic line will have a voltage bias on it, I think 8 volts. CB's usually use a dynamic microphone, so getting the two to interface is usually a considerable amount of work. Sometimes just swapping out the "guts" is a much easier way to do it.
So, what I did was take the little CB mic apart so it was just the cable, mic and the leads that went to the switch. I gutted the Shure mic, except for the PTT switch and put the old CB mic element in side and wired up the PTT switch. I had to get creative with a hot glue gun to hold all the parts in place, but once done, it worked great.
A lot of the Motorola radios have electret microphone elements, and the mic line will have a voltage bias on it, I think 8 volts. CB's usually use a dynamic microphone, so getting the two to interface is usually a considerable amount of work. Sometimes just swapping out the "guts" is a much easier way to do it.
The short answer is no and the short reason is Moto and most commercial radio mics require a "bias" voltage supplied through the hot audio lead to operate a CB cannot supply without modifying the mic input circuit.
Very true! The motorola system 500 base station I had years ago, was nice because the matching preamp desk mic which was designed for it was powered from the radio,and sounded great! Bias from the radio was 8vdc.
If I ever come across another model cb555 again, I'll probably buy it!
73,
n9zas
Thanks or replies. I think I will go with the gut the mic and replace w cb guts. We shall see how it works out !!
Hello Nz71:
Yes the commerical Motorola Mic's CAN be modified for CB and Ham radios.
The Motorola Mics use a low voltage to power the Buffer/Amplifier transistor in the Mic Assembly. Any good Tech can make any mic work on any radio.
The Motorola Mics are at swap meets and e-bay. They are great replacements for the Motorola CB Radios that have a cheap unreliable Mic's. Its been many years since I have modified a Motorola Mic but its doable. I added in a pre-amp, and a shielded Mic Cord, as the cord was usually rotten.
Added in up-down, and other switch functions again is all doable. I even put in color LED's for transmit and recive. Just half to experment around some.
Jay in the Mojave
Yes the commerical Motorola Mic's CAN be modified for CB and Ham radios.
The Motorola Mics use a low voltage to power the Buffer/Amplifier transistor in the Mic Assembly. Any good Tech can make any mic work on any radio.
The Motorola Mics are at swap meets and e-bay. They are great replacements for the Motorola CB Radios that have a cheap unreliable Mic's. Its been many years since I have modified a Motorola Mic but its doable. I added in a pre-amp, and a shielded Mic Cord, as the cord was usually rotten.
Added in up-down, and other switch functions again is all doable. I even put in color LED's for transmit and recive. Just half to experment around some.
Jay in the Mojave
Thanks I will try it
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