Teletext systems expensive cost of NABTS decoders, costing in the thousands of dollars upon their release to the public. NABTS, however, was adopted for a short while by American TV networks NBC & CBS throughout the early-to-mid 80s, CBS using it for their short-lived ExtraVision teletext service, which premiered after the early Antiope & Ceefax trials by CBS & KNXT, and NBC, who had a NABTS-based service called NBC Teletext for a very short time in the mid-1980s. NBC discontinued their service in 1985 due to the cost of NABTS decoders not dropping to an affordable level for the consumer public. The
TVNZ Teletext as TV One, TV2 and TVNZ U. The service was also available on privately owned station TV3. A separate Teletext service is available to Trackside viewers on page 600, this service has continued to operate following the closure of the TVNZ service. TAB horse was also available on the TVNZ service. TVNZ Teletext TVNZ teletext was the only analog teletext in New Zealand. It was also available on Freeview. It was launched in 1984 with funding raised in the 1981 New Zealand Telethon, to provide news and information for the deaf. The information service closed on 2 April 2013, but