A friend of mine has an EM34 eye tube and thinks that a Russian 6E5C would be able to work. The 6E5C has an Octal base with pins 1 and 4 omitted. He tells me that the EM34 is also an octal base..
Any information will be of help.. Thanks,,,, Dan

Yes, but you do have to make a minor wiring change.

Thank you Jack,,I will let him know that it will work.
This forum is great for guys like me who don't know much about this stuff,and it sure helps me learn.

I don't know that Russian tube at all, but the EM34 is a dual range indicator. It has a section top and bottom with different sensitivity. Basically the idea is the more sensitive one is for coarse tuning and the less sensitive one is for fine tuning a station. I dont know if others have that, but you may lose that function if you're worried about it. Considering how hard and expensive a good EM34 is to get though, I expect most don't really care. I've got a bum one myself that I've been meaning to replace with something whenever I get around to it.