[ARC5] 10 meter BC-454 - instability possibly found.

[Tim]

Hi  - I've used teflon pipe tape wound around the core in a situation like
that.  Worked well...
Tim
N6CC

On Tue, Feb 12, 2013 at 3:59 PM, Kenneth G. Gordon <kgordon2006 at frontier.com
> wrote:

> First of all, I must commend Mike's coil dope formula: it is very
> excellent stuff. I painted a
> layer of it on the HFO coil and it hardened to a very clear, thik coating
> that looks and feels
> very solid.
>
> However, that wasn't the most important discovery I made today: the slug
> in the oscillator coil
> is loose as a goose. It literally wobbles around on its threaded shaft.
> Clearly, the least
> movement of the receiver would cause the slug to move, thereby changing
> the frequency to
> which it is tuned.
>
> I haven't yet decided how I am going to tighten it without simply gluing
> it in place.
>
> It took 14 complete turns to remove it, BTW.
>
> I am thinking about attempting to embed a bit of rubber-band in the
> threads, or
> beeswax...maybe I can let a drop of Super Glue, or a very thin layer of
> it, harden on the
> threads, after which I can re-install the slug by putting a drop of
> Acetone inside the slug and
> screwing it on quickly.
>
> Suggestions cheerfully accepted.
>
> Ken W7EKB
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