Quote:
Originally Posted by Kevin Kuehn
All I have is the 1955-1966 Field Service Guide. That covers the CTC-2 through CTC-20 service info. But there’s not really any model number-dating info in it. I'm assuming most 11's were made in 1961, but I'm not sure. Possibly the serial numbers have encrypted date code, but I've never heard of anyone explaining the numbering system.
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I believe the RCA CTC-11 was produced for the 1962 model year. Most models had the 21FJ bonded safety glass tube and others had the 21FB separate safety glass. Both had the newly introduced all-sulphide tube. This may explain the difference in the masks.
The numbers contain info on model type, cabinet finish & style, additional features, chassis production changes, date codes, some info for the bean counters and on & on.
-Steve D,