[ARC5] [External Sender] Re: [MRCA] AN-104 aircraft antenna copper sheathing replacement.

[Bill Henderson]

Possibly copper adhesive tape (if you can find it)?

I have some metal (not copper) tape I've used on our garden shed.

 - Bill H. / va3hwa



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01/12/24,
02:40:33 PM

On Fri, Jan 12, 2024 at 12:28 PM <scottjohnson1 at cox.net> wrote:

> The Plated antennas would have likely been copper.  You can’t plate
> alloys, not easily anyway, and certainly not in that time period. (LBL
> (layer by layer) deposition with post annealing was developed by the
> semiconductor industry, 30 years later.  Steel is an alloy.  Also, the
> plating salts would have to be compatible with the base material
> (cellulosic fiber). Most aren’t, H2SO4/CuSO4 will attack wood fiber, and
> that is probably why few of the plated antennas have survived (I assume the
> wood was sealed with some for of lacquer or varnish, but it was probably an
> imperfect process).  I also wonder if they may have used metal flame
> spraying, which was a technique that existed at the time.
>
>
>
> Scott W7SVJ
>
>
>
>
>
> *From:* arc5-bounces at mailman.qth.net <arc5-bounces at mailman.qth.net> *On
> Behalf Of *Michael Hanz
> *Sent:* Thursday, January 11, 2024 20:44
> *To:* Hubert Miller <Kargo_cult at msn.com>; ARC-5 <arc5 at mailman.qth.net>
> *Subject:* Re: [ARC5] [MRCA] AN-104 aircraft antenna copper sheathing
> replacement.
>
>
>
> It's just battery acid, Hue.  My father always did his own auto mechanic
> work and taught me how to handle it safely.  (Add concentrated acid to the
> water, not the other way around.)
>
> I still remember.
>
> Back before such things became unfashionable, all these lessons were a
> common part of home mechanic magazines.  We seem to have lost most of that
> knowledge over the years.  How many people do you know who have a lathe in
> their home?  After the war it seemed like one in ten - helped by war
> surplus, of course.  Now it might be one in a thousand.  It would be
> interesting to see a survey.
>
> That seems very sad.
>
> - Mike  KC4TOS
>
> On 1/11/2024 7:48 PM, Hubert Miller wrote:
>
> OH, i just noticed and read the attachment. Odd, strikes me, that the NBS presented a paper on plating
>
> baby shoes. When i was reading this and saw the words, "sulfuric acid", i decided i would not be copper
>
> plating any shoes, altho i think it's wonderful that the process is explained.
>
> -Hue Miller
>
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