Not sure how long it has been going, but SEN Track is now in Canberra on 1323 kHz. Here in Bungendore it is heavily mixed with 5DN (‘Cruise 1323’) Adelaide at night. SEN Canberra just reaches Cooma in the daytime on the car radio. 
1323 kHz was most recently used by China Radio International, but this has been silent for a while now.
News article:

William Renton to ICDX-AM iog (2022-07-01)