[Jeffhs]

Teletext must not have been very popular. I had a TV years ago (in the 1980s, IIRC) which could decode teletext information carried on a TV signal's vertical interval, but I never saw anything with the decoder enabled. (None of the local TV stations in Cleveland, as far as I knew at the time, were carrying teletext either.) I also found out, shortly thereafter, that Atlanta's WTBS-TV was transmitting teletext on a subcarrier, but again I didn't see anything with my set's teletext decoder activated. This leads me to believe the service was purely experimental; the TV station probably had no intention of activating it full time.