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Originally Posted by ChrisW6ATV
Joe-
I agree with you about the knobs themselves; they are the 621/630 style, including the channel and fine-tuning knobs. The channel plate itself, though, is what intrigues me. It is not brass, but rather appears to be a reverse-color version of what is on my (mahogany) 8TS30. That is, gold-colored plastic with brown numbers, in a style different from what is on a 630TS. I just checked my two 630s and 621TS, and here is an interesting note: My 621 has the identical-appearing channel disc to this one as far as I can tell, and not the 630 (brass) style. Now, I am curious to know if other 621s have a plastic channel disc as well.
I have not been aware of any 8TS30s not having channel 1; aren't they the same chassis and tuner as a 630TS?
This is a very nice-looking set and will be a great restoration project (keeping the CRT mod).
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I have noticed that there seems to be variations on knob/plates on RCA TV's from the late '40's. It's possible that, according to production dates, earlier parts where used. I had an 8TS30 years ago with 630TS knobs and gold plastic channel plate. I was told then that it could've been factory. The bottom line, in my opinion, is that what is shown in original literature should be considered what is original to that particular model. The 8TS30 should have the gold cup knobs and dark plastic channel plate. I believe some 8TS30's do not have channel one, but it seems some did even though it was dropped in 1948. I had heard once that although the 8TS30's chassis is basically the same as the 630TS, it has different length front control shafts, speaker type, and possibly other minor improvements.
Joe