Could NTSC VIR = PAL

[ppppenguin]

Cox never made field rate converters.

The world's first electronic (as against optical) 525/60 <> 625/50 converter was the BBC's analogue machine using glass delays. From 1968. I believe it worked well but was a beast to keep working nicely. The IBA "DICE" was the first digital converter and worked very well. 1971 I think. Followed by the BBC's ACE with 4 field, 4 line interpolation. This set a pretty high bar for quality until motion compensation was feasible.

Most 2" quadruplex machines were multistandard so could reply NTSC tapes in Europe. A lot of US programmes back then were produced on film which was just run 4% fast in 50Hz countries. A rather happier solution than 3:2 pulldown.

Argentina were stuck between a rock and a hard place. US channel spacing and 625/50 meant wahever they used would be unique unless they opted for a wholesale change to 525/60 and NTSC. In retrospect this might have been feasible as just about any 625/50 monochrome set will display 525/60 with minimal adjustment.