I'm in Gawler area and don't pick this up. Could be local interference?
This could be a form of AQAM. If you zoom in closely youll notice the way the carrier is, being FMFrequency Modulation with angled sidebands. Now I dont know what this form belongs to as far as this one is concerned. Some forms of AQAM also sound like a fax machine if it produces nothing but noise. --Ywsia (talk)