Quote:
Originally Posted by Robert Grant
One question I am curious about - were 441 line prewar US sets somehow compatible with NTSC 525?
I myself have seen a DVD played on a TRK-12, and someone on AK had posted an image of current NTSC transmission as seen on a TRK-9.
Or are they using 525->441 scan converters?
Or have these TRKs been under surgery?
Rob
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No change to the horizontal is required to display a 525/30i signal on a 441/30i pre-war television as the horizontal hold has more than enough range on these sets to lock in. There may be a slight decrease in the horizontal width due to the increased frequency. The audio does need to be realigned for slope detection as the pre-war sets are AM. I use a converter to generate the original 441/30i and AM audio signal so they work as original.
Darryl