I think RCA's in general are 6GH8 killers. lol,
That 20 is a real nice looking set too! Seeing one of those dont come by too often. It's amazing how close the control cover and layout resemble my CTC-17.
Good lookin set you gents have! That Zenith looks like it turned out great!
Quote:
Originally Posted by old_coot88
COOL! Haven't seen a '20 in a h*** of a long time, let alone one in full operation. It was a neat bit of reverse-engineering of the CTC-19, the chassis in the first 19" rectangular table model, to drive the 21" round tube. How's the vert. sync on yours? There was a factory-issued field mod to change two half-watt resistors in the sync separator to improve weak vert.hold (forget exact their values). The CTC-19/20 and their descendants sure ate up 6GH8s.  |