Two 2-way radios on one speaker? - TTORA Forum
 
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post #1 of 8 (permalink) Old 02-10-2006, 06:58 AM Thread Starter
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Two 2-way radios on one speaker?

I just got my ham license and I have a radio one the way. I threw in a cheap speaker while I was at it thinking that even a cheap speaker would be a big improvement over an internal speaker located under my seat.

My question is, "Is there a way to hook up both the CB and 2 meter radio to that speaker?"
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post #2 of 8 (permalink) Old 02-10-2006, 07:52 AM
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Showstop would be a good one to ask regarding this.

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post #3 of 8 (permalink) Old 02-10-2006, 08:34 AM
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Ubernerd to the rescue

Quote:
Originally Posted by vanguard
I just got my ham license and I have a radio one the way. I threw in a cheap speaker while I was at it thinking that even a cheap speaker would be a big improvement over an internal speaker located under my seat.

My question is, "Is there a way to hook up both the CB and 2 meter radio to that speaker?"
Here's one way of dealing with it:

http://www.aaroncake.net/circuits/mixer1.htm
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post #4 of 8 (permalink) Old 02-10-2006, 09:30 AM
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post #5 of 8 (permalink) Old 02-13-2006, 07:06 AM
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Just use a switch. If you try listening to 2 audio sources thru one spkr at the same time it will be unintelligible.
Better yet get a 2nd spkr.

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post #6 of 8 (permalink) Old 02-13-2006, 01:09 PM Thread Starter
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It's mostly a space issue in the cab. I figured two feeds into one speaker would sound a lot like two speakers going at the same time but I'm not sure.
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post #7 of 8 (permalink) Old 02-13-2006, 02:18 PM
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You could try some big caps but you have to be careful with CBs as many of them switch the speaker with the PTT switch and use the final audio amp to modulate the TX. Get the unpolarized kind that are used in audio crossovers. Radio Shack has them. CBs are all so cheap that they will do anyting to save a nickel. I'd start by looking at both speaker outputs with a volt meter and see if you see any DC bias voltages. They don't always use a common ground return in the audio final so check to see if one side of the speaker goes to ground.

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post #8 of 8 (permalink) Old 02-24-2006, 10:39 PM
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either use the FET setup or a "on-off-on" style switch to listen to one at a time, the only other option is 2 speakers, think if one speaker fails it could cause damage to both radios or at the very least you wouldn't hear either one.
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