[R-390] Looking for a 5-25 pF Trimmer

Jacques Fortin jacques.f at videotron.ca
Fri Sep 20 15:34:07 EDT 2024


Hi Barry,

"Frozen" Erie trimmers are a common problem in Collins radios (S-line and
etc.).
Glen Zook wrote a procedure to "repair" those.
But it does not always work.
When you got a frozen trimmer into the R-390A crystal deck, you have to
rebuilt the unit entirely (guess how I know).

About yours now: how much do you need ?
BTW, remove the rubber insulator: it is only there to prevent the rotation
of the thin ceramic disk, but what happen most of the time is that the small
disk "adheres" to the top portion and rotate with...
I will send you all the replacement parts if you still need those.

73, Jacques, VE2JFE in Montreal
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