[Milsurplus] Metal to crystal bond (Hubert Miller)

[Robert Nickels]

On 5/21/2020 8:19 PM, robinson at tuberadio.com wrote:
> There is a brief description of crystal manufacture in 1968
> here....
> www.tuberadio.com/robinson/museum/Crystal_manufacture/
> it describes how they plated the crystals at that time,
> which is not really suitable for home operation.

Hi Ray!

A very interesting article.    That would be a resistive evaporation 
process, which makes sense as it's quick and good enough for what is 
needed to make contacts on a quartz crystal. It doesn't take a super 
high vacuum either.   But if I had a vacuum system I'd want one good 
enough to make vacuum tubes ;-)

Some info on the process: 
https://en.wikipedia.org/wiki/Evaporation_(deposition)

73, Bob W9RAN