[TenTec] Century 21 audio hum

[Howie WA3MCK]

Tri-Flow? What is that Josh? I'm familiar with the flush/clean procedure. I
have been told that 90W cup grease or bicycle chain lubricant is the way to
go.
What say you?

On Tuesday, May 30, 2017, Josh Gibbs <gibbsjj at gmail.com> wrote:

> Sounds like its time for a PTO clean and re-lube! I've been reading about
> that procedure. Seems that usually the PTO parts are fine and you just need
> to clean out the old grease and get some fresh grease in there. Some people
> seem to recommend flushing out the old grease and then putting some
> Tri-Flow in there. Would certainly be a lot less work!
>
> I hope Ten-Tec comes back to life and starts selling parts again!
>
> Thanks for checking that hum for me. Mine is definitely more than a slight
> hum!
>
> -Josh
>
> On Tue, May 30, 2017 at 2:54 PM, Howie WA3MCK <wa3mck at gmail.com
> <javascript:;>> wrote:
>
> > Josh,
> >
> > Thank you
> > for the info on the swamping resistor placement and installation.
> >
> > I have an analog C21. Bought it in the late 90's, had it on the air for a
> > few years, sold it to Joe N2CX, he had it for 15 or 20 years, and I
> bought
> > it back s few years ago.
> >
> > It's beat up cosmetically but works fine. Replaced the finals not too
> long
> > ago... and now the PTO is starting to go - mechanically that is!
> >
> > Ok - just checked - yes, when I turn down the volume there is a slight
> hum
> > with my old 8 ohm mono headphones.
> >
> > I prefer to use the internal speaker which is fine for me and why I may
> > have not noticed the low/level hum.
> >
> > By the way, I emailed TenTec several months ago concerning the
> > availability of a PTO repair kit for the C21 analog xcvr. I received an
> > answer a few weeks ago stating that they were in transition and to keep
> an
> > eye on their website. Nothing seen yet.
> >
> > Howie WA3MCK
> >
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