Joined: Jul Mon 20, 2009 9:49 pm Posts: 690 Location: Los Angeles
I have two sets I recently acquired with WD-11 tubes. I have no way to test the tubes. The filaments show continuity. Is there an adapter available for my tube tester's four prong socket?
Joined: Mar Sat 14, 2009 5:56 pm Posts: 2011 Location: RI, 02885
Be very careful checking continuity on WD-11's. Some voltmeters will burnout the filament. You will have to make adapters for your tube tester as I did over thirty years ago and you will need to create the setup to test the tubes reliably. If you make an error, you will fry an expensive tube. Stick to testing incircuit to avoid a costly mistake.
Joined: Jan Thu 01, 1970 1:00 am Posts: 1911 Location: Massachusetts
So long as the filaments are good, there is a high chance the tubes will still be good. When testing or playing your radios I would use the WD-11 substitutes, or an adapter.
