Folks, this may have been asked a long time ago?
Why did the Soviets name their tubes the way they did?
Eg. IN-x are nixies and I presume IN-1 were the first in development?
IV-x are mainly VFDs, with the occasional numitron style thrown in for 'good measure'?
Are the numbers given due to chronological development or for some other reason? IV-4 and IV-17 are essentially identical, different factories? Anyone know of a repository of this info anywhere?
Cheers,
Nick