[Hammarlund] Speaking of Tubes ...

[Guido Santacana]

My SSR12 uses subminiatures and they have never been replaced. I do keep a
batch of spares just in case but the only trouble has been an RF filter in
the AC line and the clamps for the band change and selectivity switches.

73s

Guido Santacana KP4FAR

On Tuesday, September 30, 2014, Kenneth G. Gordon <kgordon2006 at frontier.com>
wrote:
> On 30 Sep 2014 at 22:55, Guido Santacana wrote:
>
>> What if... Solid state devices had not been invented back in the 50s.
Tubes
>> would have evolved into ....... Sub sub miniature tubes?
>
> Probably.
>
> I have always regarded the subminiature tubes first developed during WWII,
> as an extreme example of what COULD be done with tubes.
>
> Lifetimes of 100,000 hours for instance.
>
> So, here are a couple of related questionss for all of you:
>
> 1) Which is the single tube of which the greatest number were made, and,
2)
> what was its main application?
>
> Ken W7EKB
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