[R-390] Wanted: Detent Spring

Barry n4buq at knology.net
Fri Jul 3 15:59:20 EDT 2026


I can't imagine recreating that part in a home shop.  AND it's Beryllium Copper that's heat-treated and chrome plated to boot!

Hopefully someone has a donor radio.

Good luck with it,
Barry - N4BUQ  

> For the ones who may asking which "detent spring" Paul is asking about, this is
> the one that indexes the rotation of the MHz shaft thru the notches in the
> differential drive when it turns.
> Meaning, the one in the attached .pdf
> Paul, it can be bad luck, but I believe that you found why the "detents" were so
> weak when you turned the MHz shaft.
> Maybe it was already cracked...
> 
> 73, Jacques, VE2JFE in Montreal
> 
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