The RNA has started but still seems to be a blank carrier on 89.9.
The ACMA database has it registered to an NW Group Australasia. With a bit of Googling, it comes up to an AV company that supplies audio and visual services for the Ekka. Likely the frequency only comes alive for the Night time entertainment soundtrack perhaps?
I was thinking the same thing. When I did try last night but still didn’t hear anything.