Question about Cobra 148 GTL 120-Channels Base CB Radio

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Cobra 148 gtl stays keyed up on tx on both am and ssb

I have a cobra 148 that stays keyed up on am and ssb even when you remove the mike...have already checked tr21,tr22,and tr23 they are ok any sugestions? have checked some diodes also.

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Your problem is a faulty changeover relay on the circuit board. It is a small black device , and may have the brand name MRATA
etched on it (the switchover contact points are stuck together)
WORTH A TRY GOOD LUCK
flyingfox@prople.net.au

Posted on Jun 22, 2008

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finals need to be replaced, as they are fried,, hence no output,,and if you are lucky you haven't fried the pre-amp as yet....as the pre amp is REAL EXPENSIVE....so stop keying it up

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