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Hdn9587
New member
Username: Hdn9587

Post Number: 7
Registered: 9-2006
Posted on Friday, February 23, 2007 - 5:48 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Looking for help on this one.I recently broke out my 142 and noticed that when I turn up the volume any more than 1/2 it starts to squeal I have tried using an external speaker yet this also squeals at about the 1/2 mark I tried a different mike Still the same BTW this is bone stock No golden screwdrivers Any help would be appreciated Thanks
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Unit199
Intermediate Member
Username: Unit199

Post Number: 435
Registered: 8-2003


Posted on Friday, February 23, 2007 - 8:54 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Have you tried turning mic gain down and also check and see if mic is okay.
HARVE
UNIT199
CEF210
CVC18
KB0YVK
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Funtimebob
Intermediate Member
Username: Funtimebob

Post Number: 225
Registered: 5-2002
Posted on Thursday, March 01, 2007 - 11:50 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

did you by chance remove or had removed the audio limiter transister (tr-32?) common problem on the pc-385 chassies used in the cobra version.
73's Kd8dey
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Hdn9587
New member
Username: Hdn9587

Post Number: 8
Registered: 9-2006
Posted on Friday, March 02, 2007 - 4:01 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

No This radio is bone stock shipped from copper back in 88 with no tune up.
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Hdn9587
New member
Username: Hdn9587

Post Number: 9
Registered: 9-2006
Posted on Friday, March 02, 2007 - 4:04 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Harve I had tried turning mic gain down all the way I also used 3 different mics still squeals

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