There was an interesting mention in the latest "Television" magazine of 405 lines...apparently there's going to be a real 405 line transmission on VHF channel 1 (subject to approval) from Alexandra Palace on 2nd November this year to mark the 70th anniversary of electronic TV in the UK.
No mention of how long the transmission would be, except to say it would be a recreation of program material of the time.
So for those in the London service area lucky enough to own a 405 line set, now's the time to get it in working order and find a Band 1 aerial for it.
Incidentally, it mightn't be well known, but 625 line VCR's will record a 405 line signal as the field frequency is the same so the head and capstan servos lock correctly. However, the dropout compensator, if fitted, won't work as it operates at line rate. Not a problem provided a good quality tape is used. In any case, with only 3MHz bandwidth of vision signal there should be virtually no loss of definition.
Of course an exernal receiver needs to provide the vision and sound signals in view of the positive modulation and AM sound.
