Question about Magnum 257 CB Radio

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257 Talkback I have been trying for months to find a way to add talkback to my 257. I've tried grounding the ext sp jack to ground. I've tried pin 2 of the mic plug to the negative side of the speaker. Any ideas on how to add talkback?

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Use a talk back ext. speaker.

Posted on Apr 24, 2008

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1 Answer

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1 Answer

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1 Answer

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1 Answer

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