[ARC5] Tuning Knob

[Michael Hanz]

On 11/2/2021 12:11 PM, MICHAEL BITTNER wrote:
>
> Not to beat this subject to death, but it is curious that 
> brass-on-aluminium is used now and then in mil equipment as in this 
> BC-610 var cap now on eBay, item No. 185140328932.  Note brass spacers 
> between Al capacitor plates.  Mike, W6MAB
>

It's an interesting subject, Mike.  If those spacers are tin plated, 
then it would be less of a potential problem.  But I think Roy Morgan's 
earlier observation about the environment was the most accurate 
assessment - if it ain't wickedly wet or continuously high humidity, 
then it won't be much to worry about.  If your environment looks like 
that for the set below, then okay - probably needs another design.

- Mike  KC4TOS
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