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Old 06-16-2011, 05:34 AM
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MelodyMaster MelodyMaster is offline
78s Galore.
Join Date: Apr 2009
Location: Mississauga, Ont, Canada
Posts: 86
Originally Posted by Pete Deksnis View Post
I wondered that too. Based upon a reading of Wentworth and Fink plus the preponderance of 1952 tubes, I don't see now how it could be a dot sequential set using three-state communitator circuitry. However, I couldn't resolve one way or the other their flirtation with phase alternation in that time period. So, it probably uses equaband quadrature circuitry for chroma, bypassed luma (of course), in 1952 perhaps a nonstandard color subcarrier frequency, and maybe PAL-like circuits.

My two cents.

But it appears that the set has been used over the years So it was either built as 3.579 quadrature, or has been modified to be NTSC-compatible.

Last edited by MelodyMaster; 06-16-2011 at 05:42 AM.
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