RNZ National (), formerly Radio New Zealand National, and known until 2007 as the National Programme or National Radio, is a publicly funded non-commercial New Zealand English-language radio network operated by Radio New Zealand. It specialises in programmes dedicated to news, the arts, music, and New Zealand culture generally, including some material in the Māori language. Historically the programme was broadcast on the (AM) "YA" stations 1YA, 2YA, 3YA and 4YA in the main centres. In 2013, RNZ National had a 10.3 per cent market share, the highest nationwide and up from 9.1 per cent in 2009. Market share peaked at 11.1 per cent in 2011, probably due to the station's coverage of the Christchurch earthquake. In 2014 493,000 people listened to RNZ National over the course of a week – the second-largest cumulative audience. A 2021 survey estimated 609,800 listeners (13.5% of the 10+ population), Morning Report being the most popular, with 434,000 listeners. Its sister station is RNZ Concert. Stations RNZ National's programming is distributed via several means. RNZ National was the first network in New Zealand to incorporate the Radio Data System in its FM signal. Most FM frequencies are 101FM state-owned public service licences and some are held by non-profit community organisations. RNZ National broadcasts its FM signal in mono, but the on-line and terrestrial Freeview HD services are available in stereo. RNZ-owned frequencies These are the RNZ-owned frequencies of RNZ National: Kaitaia – Maungataniwha – 101.1 FM Kaikohe – Hikurangi – 101.5 FM Kaikohe – Ohaeawai – 981 AM Whangarei – Otaika – 837 AM Whangarei – Horokaka – 101.2 FM Whangarei – Parahaki – 104.4 FM Auckland – Henderson – 756 AM Auckland – Sky Tower – 101.4 FM Hamilton – Eureka – 1143 AM Hamilton – Te Aroha – 101.0 FM Tauranga – Paengaroa – 819 AM Tauranga – Kopukairua – 101.4 FM Tokoroa – Wiltsdown – 729 AM Tokoroa – Te Aroha – 101.0 FM Rotorua – Tihiotonga – 1188 AM Rotorua – Tihiotonga – 101.5 FM Whakatane – Mount Edgecumbe – 101.7 FM Taupo – Whakaroa – 101.6 FM Taupo – Mountain Road – 104.8 FM Gisborne – Wheatstone Road – 101.3 FM Gisborne – Wainui – 1314 AM Hawke's Bay – Opapa – 630 AM Hawke's Bay – Mount Erin – 101.5 FM New Plymouth – Mount Egmont – 101.2 FM Palmerston North – Kairanga – 1449 AM Palmerston North