Last night I caught a station fading rather sharply around 1200 UTC on 4460KHz.
News report being given in english by a lady with a strong New Zealand or Australian accent with the main announcer being male speaking a version of english with a thick Latin accent.
No other South American stations coming in at the time, but real pipsqueak Asian stations were (China and Korea were slaughtering the normally booming Radio Australia on channels they shared), so I rule out the Peruvian on this frequency, but can't find a listing for an Australasian one

Any ideas?
Peace!