[Milsurplus] BC-348-Q restoration

[Dennis Monticelli]

Just answered one of my own questions.  The manual states that at the 1 yr
maintenance interval, the tuning gears should be lubricated.  So they
didn't intend to run them dry.

Dennis AE6C

On Mon, Jun 15, 2020 at 8:00 AM Dennis Monticelli <
dennis.monticelli at gmail.com> wrote:

> Hi guys,
>
> I am beginning my first BC-348 restoration. Luckily the Q model is the
> simpler of the two basic types. It appears to have decent caps, not
> micamol. Not badly hacked either.
>
> First order of business has been to remove unwanted mods. That means all
> other than the AC supply, which fortunately was well executed.  A 1uF
> bypass cap on the cathode of the 2nd IF has been added.  The stock 0.1uF
> bypass is still there.  Was this a published mod to change AVC action?
>
> Regarding the tuning gearing.  It was stiff and I found dried grease.  Was
> any grease used on stock units?  I note the use of brass on steel gear
> design choices which I recall is naturally lubricating.  What do you
> recommend regarding cleaning and possible lube of the gears?  I am using
> WD-40 on Q-tips to clean off the old lube.
>
> Any other restoration hints would be appreciated.
>
> Dennis AE6C
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/milsurplus/attachments/20200615/a79dea56/attachment.html>