[hsusmann]

I am working on an RCA model 10T from about 1935. It's got
a 6E5 eye tube which is a bit dim.

The owner is willing to spring for a NOS 6E5 and I am thinking
that I should do something to enable the tube to be switched
off to save it's life in the future.

So, my idea is to bring a switch out the back somewhere
that switches off the filament voltage to the 6E5.

Does anyone see any problem with doing this? I don't think
anything bad will happen to the tube if the plate voltage etc..
is there when the filament is cold or am I wrong?

I would appreciate any thoughts...

Herb S.
Ithaca NY