Last night I noticed that the ABC digital radio stations (transmitted by Broadcast Australia near Chatswood) had jumped up in strength. Clearly there was antenna work going on because the signal was going on and off during the evening.
This morning the signal is good, full bars with the antenna up and reasonably listenable with the antenna down.
One thing, you don't want to set your watch by the pips on digital radio, the delay between the analog and digital versions of the feed is about four seconds. Presumably some of this is the receiver's buffering for error correction. Perhaps the days of the time signal are coming to an end - after all there's a clock in the radio anyhow.