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SBE Sidebander odd problem

TM86

Sr. Member
Jul 6, 2014
2,272
3,739
273
Payson, AZ
Just wondering if anyone had seen this before, or something like it.

Sidebander (SBE-CB-6) that drifts around quite a bit on all channels. As in up to the 28 - 29 MHz range.

Until I touch it, then it's rock solid on frequency. Doesn't matter where I touch it, as long as I do.

I'm guessing it's a capacitance issue, but I'll be darned if I know where to start looking without touching the radio.

This is in AM, since that's the easiest to get to register on my frequency counter. Once AM is fixed I'll worry about sideband.

Gladly accepting hints, suggestions, clues, insults, etc.

The radio has been recapped, and wasn't working at all about five hours ago. So it's already better than it was, it's just that better isn't very good at the moment.
 
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  • @ heartbreaker3473:
    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
  • @ AudioShockwav:
    Wes, it's better if you start a thread on the main forum, more people are going to see your question.
  • @ heartbreaker3473:
    Okay, sorry, will put in a forum
  • @ heartbreaker3473:
    I put it in the general disscution help area and started a new thread. Thank you for letting me know.