A 1937 photograph of ABC Broadcast House, located in the Supreme Court Gardens, Perth, WA - the home of 6WF from 1937 until 1958 (Photograph Wikimedia Commons).
6WF Perth WA on 720 kHz was heard during a holiday / dxpedition at Leisure Isle, Knysna on the 6th July 1987 via the FRG7 and 30 metre longwire antenna.
I was fortunate to receive the above QSL card in response to my reception report.
Google Earth Image of the 6WF 720 kHz 180 metre mast with a "top hat", located in Hamersley, Perth, Western Australia.
Another surprise verification ...
A few years ago, I received an interesting email from an announcer at 720 6WF, in response to the youtube 2008 Jongensgat DXpedition Video :
" ... Hi Gary, A friend sent me a link to your YouTube piece about Dx int. He suggested I listen about 2:00 mins in. To my great surprise I found myself listening to a broadcast I made through 6WF in Perth Western Australia. It was sure strange to sit and watch-and listen- as my words came back to me via youtube and South Africa. Regards, John ... "