Quote:
Originally Posted by Richard_FM
Quote:
Originally Posted by Studio263
I very much doubt that. They made a 405 line prototype in the 60s but the ones you could actually buy were all 625 or 525 line. The earlier version had a UHF / VHF tuner but all the timebases were single standard.
|
I heard Sinclair proposed a portable TV in the 1960s which never went into production, only getting as far as some print ads, which I presume was the 405 line prototype. |
There was a write-up in the Radio Constructor, Oct 1966 which interestingly describe the thing as having magnetic deflection (in contrast to Post #6), so maybe this was dumped in favour of a more complex tube by the time the TV went into production? Certainly electrostatic seems more attractive from a low-power circuit point of view!