14-03-2018, 10:52 AM
Terry wrote:
"Don't forget that Belgium used a version of the 819-line system but crammed into a standard 7MHz channel with a 5MHz vision bandwidth."
Apart from having the advantage of the fine line structure, the horizontal definition must have been poor.
Remember that the VHS video bandwidth is only 3Mhz and the pictures always look "soft".
From the UKVRR: a discussion about transmitting a 625 line TV in a System A 5Mhz channel.
The consensus was that the 405 line picture looked better than the narrow bandwidth 625.
https://www.vintage-radio.net/forum/show...p?t=123614&highlight=narrowband+625+line+TV&page=2
Geordie McBoyne.
"Don't forget that Belgium used a version of the 819-line system but crammed into a standard 7MHz channel with a 5MHz vision bandwidth."
Apart from having the advantage of the fine line structure, the horizontal definition must have been poor.
Remember that the VHS video bandwidth is only 3Mhz and the pictures always look "soft".
From the UKVRR: a discussion about transmitting a 625 line TV in a System A 5Mhz channel.
The consensus was that the 405 line picture looked better than the narrow bandwidth 625.
https://www.vintage-radio.net/forum/show...p?t=123614&highlight=narrowband+625+line+TV&page=2
Geordie McBoyne.
