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Old 14th Jan 2020, 10:52 pm   #1
Tinker1966
Triode
 
Join Date: Nov 2014
Location: Leominster, Herefordshire, UK.
Posts: 14
Default Valve testing a 4212

I have recently acquired a very large valve - a 4212H, I believe.
Is it possible to test one of these huge valves ?
It is undoubtedly beyond me !
I have ascertained the filament has continuity and thats me done!
Is this a service that is provided by anyone ?
Many thanks
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