It is the oldest television broadcaster in New Zealand, starting out from 1960 as independent channels in the four main centres of Auckland, Wellington, Christchurch and Dunedin, networking in 1969 to become NZBC TV (although the individual facilities retained their call signs into the 1970s).Other programming targets the 25 to 54 demographic,[1] and consists of mainly drama, general entertainment and documentaries, both locally and internationally (especially British) produced.The sinking of TEV Wahine in Wellington Harbour on 10 April 1968 highlighted the lack (and necessity) of a video link.Footage of the Moon landing was recorded on video tape at the Australian Broadcasting Commission's ABN-2 in Sydney, then rushed by an RNZAF English Electric Canberra to Wellington and WNTV1.The link was completed later that year, the first NZBC Network News transmitted on 3 November, read by newsreader Dougal Stevenson.[12][13] The Network News continued to broadcast in black-and-white until 31 March 1975; this was to avoid refitting the existing Wellington studio with colour equipment ahead of the imminent move to the new Avalon Television Centre in Lower Hutt.Television One commenced transmission on Tuesday 1 April 1975 at 2pm with a five-minute news bulletin read by Bill McCarthy, followed by the British drama series Harriet's Back in Town.Its two-hour opening special was broadcast live to air at 7pm that night and featured a preview of the programmes, plans and personalities for the new service.The batteries eventually discharged by 7pm that night, severing the Television One network feed south into Canterbury, Otago and Southland.Technicians couldn't reach the station to repair the diesel generator and restore the network until late on Sunday morning, meaning most of the South Island missed the live opening ceremony of the 1976 Summer Olympics.[17] The regional programmes broadcast from the four main TVNZ studios in Auckland (Top Half), Wellington (Today Tonight), Christchurch (The Mainland Touch) and Dunedin (7.30 South).The original 1975 logo featured large rounded lettering, sometimes with the top half of the "o" in the lowercase "one" divided into rainbow colours.From launch in 1960 until digital television transition was completed on 1 December 2013, TVNZ 1 broadcast terrestrially using analogue PAL-B&G.
Logo used from 1 July 2013 until 30 September 2016.