The North Nambucca (NNB) HF ocean radar site (32.031 S, 115.746 E) is one of two HF ocean radars covering the waters off Coffs Harbour, New South Wales. The other HF ocean radar station is at Red Rock.
The NNB HF ocean radar is a WERA phased array system with a 16-element receive array. This radar operates at a frequency of 13.912 MHz, with a bandwidth of 100 KHz, a maximum range of 100 Km and a range resolution of 1.5 Km. Azimuthally the radar covers a sweep 60 deg either side of a bore sight direction of 285 deg true east of north (approximately west by north-west).
Within the HF radar coverage area surface current radials are measured. Data are also collected from which wind directions and significant wave height can be calculated.