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

[Barry Scott]

I'm pretty sure I've repaired some of these in an R390A as well.  They're
pretty easy to work on provided you can get the parts.  Another list member
is sending a complete trimmer to me so I should be good to go.

Thanks,
Barry - N4BUQ


On Fri, Sep 20, 2024 at 12:03 PM <k1jos at att.net> wrote:

> I just repaired a few in my KWS-1.  If you can get an inexpensive
> ultrasound cleaner and some mild dishwater liquid detergent.  They do come
> apart after a few minutes and get really clean, even the silver plated
> contact surface
>
> Jerry NY2KW
>
> -----Original Message-----
> From: r-390-bounces at mailman.qth.net <r-390-bounces at mailman.qth.net> On
> Behalf Of Barry
> Sent: Friday, September 20, 2024 12:17 PM
> To: Jacques Fortin <jacques.f at videotron.ca>
> Cc: R-390 Mailing List <r-390 at mailman.qth.net>
> Subject: Re: [R-390] Looking for a 5-25 pF Trimmer
>
> Here's what mine look like.  I thought the rubber insulator should lift
> off the phenolic plate but it doesn't want to come all the way off.
> Perhaps it's just stuck tighter than I've tried to pull it.
>
> Now that I take a closer look, that is an Erie trademark.
>
> When I adjusted the trimmers last night, some of them were a bit stuck but
> moved okay after a little "snap".  Apparently this one may have
> disintegrated when it snapped.  I suppose I could have taken them all apart
> and soaked them in IPA to avoid this but I just didn't think of it.
>
> Thanks,
> Barry - N4BUQ
>
>
>
> > Hi Barry,
> >
> > Well, your R-390/URR seems to be full of surprizes...
> > So to speak...
> > Yes the originals were made by ERIE, and I have a fair amount of those.
> > See attached picture.
> > However, I cannot tell right now how much it will cost to ship one or
> > many of those to you.
> > BTW, I hesitate to dismantle my own Z203 to see how it is assembled
> > inside the can.
> > Can you send me a picture, just to be sure ?
> >
> > 73, Jacques, VE2JFE in Montreal
> >
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