[sdiy] Tube testers

[Arun Bohm]

Hi,
    Found a stash of tubes in this old garage. Where can I find out more 
about these? I've always only worked with solid state. I have a few 
schematics with tubes in them, but how can I find out about there 
interchangeability for tube #'s? Someone told me something about a tube 
tester. Where can I find out more about these?
arun_bohm at hotmail.com


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