Quote:
Originally Posted by andy
I believe this is not technically what is generally known as NTSC 4.43. It is 525 60 Hz with PAL 4.43 color. Even an old PAL only TV will display this in color, but you have to adjust the vertical hold. The reason you can't record this on a PAL VCR is because it's 525 60Hz instead of 625 50Hz. You need a VCR with a standards converter if you want to convert a tape to PAL.
NTSC 4.43 is 525 60Hz with NTSC color encoding, but with the color subcarrier at 4.43 MHz.
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VCRs that playback NTSC tapes as PAL 60 came later. The earlier decks output it as NTSC 4.43.
Some jungle ICs (usually found in cheaper TVs from the early 90s or so) can decode PAL or NTSC, but can only handle one subcarrier. The PAL model gets a 4.43MHz crystal and can display NTSC 4.43. The NTSC model gets a 3.58MHz crystal and can probably handle PAL-M.
I've yet to see a true multisystem jungle IC that handles PAL, NTSC and SECAM. The few SECAM capable sets that I have seen use a seperate IC for SECAM.
Another non-standard NTSC variant is produced by some "international" model Apple ][e computers. I don't remember what the subcarrier was, but it wasn't 3.58MHz and I don't think it was 4.43MHz either. I do remember I had to change the crystal in the monitor to 3.58MHz to get to play my NTSC 3DO games in color (back then I didn't have any multistandard monitors/TVs). I think Apple just wanted to make sure people bought their monitor.