Non-NOS tubes...

[eightbitpotion]

So I recently bought some mullard ef92s that were pulled from old military stuff. I was disappointed at first because honestly they sounded like crap, but I stuck with it hoping they weren't burned in...and they weren't, now they're a completely different/better sound. Anyway, what exactly did the military USE these types of tubes for? I, at first, assumed it was for radios....but is that it? I don't know if there are any war vets here. :-\

 

[Huck]

Quote:

Originally Posted by eightbitpotion /img/forum/go_quote.gif So I recently bought some mullard ef92s that were pulled from old military stuff. I was disappointed at first because honestly they sounded like crap, but I stuck with it hoping they weren't burned in...and they weren't, now they're a completely different/better sound. Anyway, what exactly did the military USE these types of tubes for? I, at first, assumed it was for radios....but is that it? I don't know if there are any war vets here. :-\

I read somewhere that The Russian MIG fighter jet still uses tubes somewhere in the electronics! Huck

 

[Budgie]

EF92 @ The National Valve Museum

Looks like primarily radio gear was it's main use.

Russians stuck with tubes since they were resistant to electro magnetic pulses from nuke bombs. Americans/British worked out ways to "harden" solid state devices to resist EMP.
Radiation Hardened Electronics and Radiation Technology - Honeywell Aerospace