Most of the 900MHz frequencies in NZ are privately owned so care must be taken to make sure that local laws are not broken.
On Ubiquiti 900MHz platforms enable channel shifting and select 924MHz with a 5MHz channel.
900MHz Wireless GURL in New Zealand
915MHz to 920MHz......................1 watt (30dBm) total EIRP.
920MHz to 928MHz......................4 watt (36dBm) total EIRP.