1 December 1985: 3UZ makes a radical programming shift when it adopts a country music format. Largely mirroring a similar revamp that had been done at 4KQ a few years earlier (Nick Erby, who led the 4KQ change, had been recruited by 3UZ’s new owners ENT Limited to improve 3UZ’s fortunes).
Source: The Age
https://news.google.com/newspapers?id=tVFVAAAAIBAJ&sjid=lpUDAAAAIBAJ&pg=3715%2C5326108
Looking at the ratings, the change did appear to have some modest impact. A cursory glance at the ratings through 1986:
Source: McNair Anderson Assoc. Pty Ltd
By 1988 (if not earlier), the country music format was dropped as 3UZ, sold again in 1987, regained rights to horse racing from 3DB and resumed a talk/racing format.