[Audioarchivist]

That rule, as I understand it, was put there to prevent "amateur" transcoding by users. At this stage of broadcasting when this was recorded, home conversions weren't very well done, but pro TV studios had much better equipment to use to convert formats. So, IMHO, a re-broadcast of a video originally shot in PAL that's been converted by "professionals" in a broadcast environment is totally acceptable! There's a good reason that it's NTSC and it was more than likely done the "proper" way, so, go for it!!!