Frankg, if you go on eBay and do a search of 6N23P, some of the ads will have close up photos and you can see examples of the same alphabetical differences previously mentioned. Yes it is somewhat confusing, but the tubes are well worth seeking out. They are cheap and very consistent in quality. Make sure you seek out NOS, which for these tubes means prior to the break up of the Soviet Union when military standards for testing the tubes was more rigid.
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- 1323 posts total
- 1323 posts total