EIA site has disappeared, but I added a 1994 code list.
Thanks! :thmbsp:
EIA site has disappeared, but I added a 1994 code list.
Two years later, I think this thread needs a bump.
Most of the time the EIA code is a clue to who made the tube, but unfortunately, not always. Some manufacturers bought tubes from other manufacturers and labeled them as their own, complete with their own EIA code! I have seen several tubes labeled like this. If you know what you are looking for and know the physical structure of the tube you are looking for, you will most likely not be fooled by these improper EIA codes, but they still fool me now and then. Westinghouse did this a lot. The only way I can find out if it was truly made by Westinghouse (they bought a lot of RCA tubes and labeled them as their own, complete with the 337 code) is to check the getter. They had two wires on the end of their square getters. This is a true Westinghouse tube, and not an RCA or another manufacturer.
Happy tube hunting everyone!
ken99
Someone in Speakers was just asking about some drivers and I went to the nicest biggest list I know of and the link was broken. Contacted the site owner and he fixed it. So here's a 1994 list.
http://www.davelevasseur.com/old/1994 EIA Source and Date Code Book.pdf