[ARC5] Refurbishing a Whatzit

[Cliff Miller]

Embarassed, here.  I washed off all the dirt (this was a barn find) and
discovered the remaining finish to be black wrinkle paint :^)  The donor
transmitter (at least for the top shell) was a CCT 52210.  Inside were two
transformers, one large unmarked, the other marked as a 'Driver' with
impedance ratio 2.2:1. Tube complement is 6SJ7, 6C5, 6SN7, and a Sears
Silvertone 6K6GT.  The sockets for the original final tubes are wired into
the circuit.  Also, on closer inspection, the connector on the front is an
old microphone connector.  So maybe this was someone's homebrew modulator?
Ha, a mystery!

On Sun, Oct 30, 2016 at 12:02 PM, Kenneth G. Gordon <
kgordon2006 at frontier.com> wrote:

> On 30 Oct 2016 at 7:51, Cliff Miller wrote:
>
> > My question is how to clean off the exterior of this chassis - it
> appears to have had a clear finish
> > applied which is about 50% worn away.  Are there any precautions on
> removing finishes from the
> > aluminum - products not to be used?
>
> Hi, Cliff:
>
> That "clear finish" MAY be MFP (Moisture Fungus Proofing) which the
> military applied. If so,
> it will have a yellowish "cast" to the color.
>
> If it is MFP, it is extremely difficult to remove. Furthermore, since one
> of its main
> constituents was formaldehyde, it is somewhat toxic under some
> circumstances.
>
> As one of our members, I believe it was Jack Antonio, pointed out to me,
> there is a product
> named "Aircraft Paint Remover", which may do the job (I have not yet used
> any of the can
> which I bought recently.).
>
> Aircraft Paint Remover is available at any decent auto parts store. I got
> mine at Auto Zone.
>
> And the directions on it specifically say, "Not for use on aircraft". :-)
>
> The directions for using the stuff are quite clear, and it will not damage
> aluminum.
>
> Ken W7EKB
>
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>


-- 
Cliff Miller
cliff52 at gmail.com
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