The Official Broadcast is broadcast every month on the 80m band, as well as on the National system as well as some local VHF and UHF repeaters around New Zealand.

The broadcast is made at 20:00 NZST (8:00 pm) on the last Sunday of the month and then repeated again at 21:00 (9:00 pm).

The HF broadcast is made on 3900 kHz, LSB at the top end of the 80m band. 3.9Mhz