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cobra 148 gtl (oldschool) talkback? cobra 148 gtl (oldschool) talkback?
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  #1  
Old 10-09-2009, 12:50 AM
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Default cobra 148 gtl (oldschool) talkback?

Ok I have been wanting to get talkback put into the radio and I cam across this...Adding talkback to your radio - and easy modification for beginners
Only problem is I dont want to have it super loud. Has anyone done this to their radio? If so how well did it work? I would like to be able to turn it up and down without having to cut wires. (like using the receive for variable talkback level)
Any info/ advice would be greatly appreciated!
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Old 10-09-2009, 03:05 AM
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AS a guess, I suppose you could wite a 1k ohm pot in series with e 100 om resistor.
Or maybe a 10k ohm; I'm just guessing here...
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Old 10-10-2009, 02:50 AM
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Well I tried it today and it works It will have feedback if you run a powermic and it turned up high or you get too close to the radio. The external speaker still works so I just ran the speaker farther away from me and no squeal.

I have taken some pics, sorry about the quality they were taken with a camera phone, and the electrical tape was just temporary to keep the wired down while working. I also recorded the audio with my phone so you can hear what it sounds like. Not too bad for those who want talkback and forwhatever reason cant get the talkback board.

Let me know what you think.
Attached Images
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File Type: jpg 4.JPG (65.3 KB, 7 views)
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File Type: mp3 talkback.mp3 (796.3 KB, 2 views)
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Old 10-10-2009, 04:03 AM
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Old 10-10-2009, 11:15 AM
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Didnt have that....or the patience to wait and order one. How much did that cost? Mine cost me about $3.00
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