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RCI-2990 SSB low receive

C

Crasher

Member
Apr 25, 2012
49
6
18
44
Norwalk, OH
Have an older 2990, just aligned and works perfect in AM/FM modes except receive on SSB. Have to turn volume all the way up to hear anything. Was told to check d37, checked out fine. What else can I check, would like to get this radio back up to perfect shape.
Thanks
 

Which board does that radio have in it?
The symptoms can be caused by a dirty mode switch, or a failure anywhere between the crystal filter, (F3 in many RCI's) and the product detector. Lots of real estate there. Two can coils, a bridge network of general purpose diodes, and about 5 transistors,
I wish I could narrow it down a bit more, but I can't.
 

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