[Hammarlund] Speaking of Tubes ...

[Bill Cromwell]

I think those submini tubes used in the artiilery shell proximity fises 
must have been made and used in overwhelming numbers,

73,

Bill  KU8H


On 10/01/2014 12:05 AM, Kenneth G. Gordon 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
>