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stajo 21st June 2012 06:49 AM

I have a bunch of those. They can come from some swedish military supply. I've read thar they were used in torpedo control systems:eek:

Anybody knows anything about them, if they can be used in audio, linearity etc? All I can find is this DL 22N, Tube DL22N; Röhre DL 22N ID33454, Vacuum Pentode and no datasheet.

Best regards

jerluwoo 21st June 2012 10:56 AM

Some basic info here Electron Tubes & Valves Database - Index - Cross Reference under DL22. The DL22N has metal envelope instead of glass.

stajo 23rd June 2012 07:00 AM

Thanks. Well it seems like a low voltage direct heated pentode for battery driven amplification, so the torpedo rumour might be correct.

Eventually I could curve trace it manually. Anyone knows a thread about doing that?

Best regards

hidnplayr 23rd June 2012 08:34 AM

DL22 is listed in the VADE-MECUM

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