Needing a vacuum tube cross reference chart to test my tubes in a Jackson 49 tube tester.
Will use it to test Russian and Chinese and euro tubes.
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it’s a good start. still need the Russian comparable. . .
ideally looking for a hard copy. are things changing that much? seems like one of those things that’s pretty stable and consistent? anybody know of a book?
Check out tubebooks.org . Dude has tons of info on sources for information and he has a treasure trove of scanned docs with tech specs/sheets for countries/regions, manufacturers, and tube types. I’m not a big tube guy, but have found some valuable info there in the past.