Rod Barton wrote:
Hey gang,
 
I've got a "Repeater Builder" UHF micor converted mobile repeater running great for several years.. Last week sometime it stopped passing audio.. dtmf, etc...  I can key it fine from places like usual, but it doesn't seem to pass any audio.. Would this be more of a controller issue or possibly something awry with my micor? Its running a CAT250 controller.  Comments appreciated of course.

I'd check and see if audio is present going into the controller with a scope.  If it's several years old, it might have a MicorMuteboard installed.  If so, the LM-386 might have gone bad.  This would be a 8 pin dip IC on a little board.  Replacements might be obtained from a local Radio Shack.

Do you hear the controller responses okay, like courtesy tones, etc?  If so, at least part of the controller and transmitter are likely okay.

Kevin Custer
Repeater Builder








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