[R-390] Antenna trim repair

Barry n4buq at knology.net
Tue Jun 19 11:03:09 EDT 2018


I may be wrong, but isn't that just a roll pin that can be pressed/punched out?  I seem to recall having this same problem but don't remember if I ever removed that pin but I _think_ I did...

Thanks,
Barry - N4BUQ

----- Original Message -----
> From: "Dave Kirk via R-390" <r-390 at mailman.qth.net>
> To: "R390 Reflector" <r-390 at mailman.qth.net>
> Sent: Tuesday, June 19, 2018 9:13:25 AM
> Subject: Re: [R-390] Antenna trim repair
> 
> Not sure drilling is an option that pin is probably harden steel I'll end up
> breaking drill bits trying to drill out the pin CRAP! Now what? Sounds like
> I either live with it or try and find a replacement.
> Dave
>    On Monday, June 18, 2018, 8:04:48 PM PDT, Stan Gammons
>    <s_gammons at charter.net> wrote:
>  
>  I had one that was like that.  I tried to remove the pin with a drift
> punch but was never able to remove it.  Ended up replacing the entire
> assembly with a part from another RF deck. In the end that RF deck
> turned out to have other odd problems, so I replaced it.
> 
> Good luck.
> 
> 
> 73
> 
> Stan
> KM4HQE
> 
> 
> On 06/18/2018 08:21 PM, Dave Kirk via R-390 wrote:
> > Has anyone had any luck getting into the antenna trim can to clean the cap?
> > The antenna trim on my 390a is intermittent as the knob is turned it acts
> > like the capacitor contacts need a cleaning real bad. The gear on the
> > capacitor shaft is pinned on I'm not quite sure how to remove the pin,
> > maybe drill out the pin ouch! Why the heck did they pin this gear on seems
> > like two set screws with loctite would have worked just fine.
> >
> > Dave
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