The most far-reaching of all Radio Tonga's services, this channel broadcasts daily from 6 am to midnight, on a frequency of 1017 kHz.
Several local church organisations and businesses have weekly programs, and, though it is government-owned and funded, a significant source of its profit relies on in-house commercial advertising.
Radio Tonga 1 can be heard throughout the entire Kingdom of Tonga, including the outer island groups of Ha'apai, Vava'u, Niuafo'ou & Niuatoputapu, although there have been reports of listeners receiving the signal in other countries, such as Samoa and Finland.
Formerly known as FM97, now broadcasting on a frequency of 90.0 MHz, this commercial FM station commenced in the early 1990s, and now runs 24 hours a day, playing mostly chart-toppers from abroad.
Launched on 21 November 2005, this FM service—broadcast on 103.0 MHz—relays Radio Australia 24 hours a day, and is only available to listeners in Tongatapu and 'Eua.