 With the change in band frequency spacing in late 1978, 4ZA moved to 864 AM.Before 1989 radio stations in New Zealand were assigned call signs; 4ZA was branded as its call sign name 4ZA until 1993, when it became Classic Hits ZAFM.In 1979 John "Boggy" Mcdowall joined the station and took on the role as the breakfast show host.