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If the info I have on it is right, that radio uses the SM5104 PLL or one of it's clones. Find a mod for another SSB radio that uses the same chip and you're probably in business. Easiest thing to do might be put a DigiMax kit in it.
Hello gentlemen and Ladies. I have the dreaded RCI-2990 receive issue where my radio gets distorted when people get close to my location. I found the C90 Capacitor, but I can not for the life of me find the C89 capacitor. Can or does anyone have a picture of the exact location of C89 ? Thank you in advance, Wes
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