Talk:405-line television system

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[edit] Half line

In the early days of 405, a line 1.5 lines long was inserted at the bottom of the frame. I forget the details of why, but something to do with synchronisation. This odd sized line was dropped fairly early in 405's history. Tabby (talk) 11:24, 26 November 2007 (UTC)

[edit] Spot wobble

Interesting concept but surely if would have been a lot simpler to decreace the focus voltage slightly to produce a larger spot (and hence thicker lines) ? 80.229.222.48 (talk) 20:54, 15 March 2008 (UTC)

It would have been simpler, but it would have reduced the horizontal resolution. Spot wobble produced an oval dot which was higher than wide, in order to reduce the visibility of the line structure. --Harumphy (talk) 12:17, 12 May 2008 (UTC)

[edit] New Zealand?

Can anyone give a reference or further information on the New Zealand part of "was also used for some time in Ireland, Hong Kong and New Zealand" as this is the first time I've heard that New Zealand TV broadcasting was ever in anything except 625 line format, originally CCITT B&W, later PAL.Kiore (talk) 10:59, 12 May 2008 (UTC)

It wasn't; the NZ government briefly considered it, but came to their senses. I've removed this from the intro. ProhibitOnions ^(T) 11:24, 15 May 2008 (UTC)