12-03-2010, 12:18 AM
I tried using a 6D6 as a replacement for a 78 as an IF amplifier in a Philco once, and it didn't work. I don't remember which Philco model it was.
After that, I stocked up on 78 tubes.
YMMV.
After that, I stocked up on 78 tubes.
YMMV.
--
Ron Ramirez
Ferdinand IN