13th Sep 2022 11:42PMG. F. Ainsworth, a member of the Australasian Antarctic Expedition who was based on Macquarie Island, describes how the expedition had radio contact with the wireless station at Pennant Hills.

'The operator was requested by the Pennant Hills high-power wireless station at Sydney to listen for signals tapped out during the daytime, and Sawyer spent a couple of hours on certain mornings assisting in these tests, which were attended with some success. We occasionally received press news from land stations or from ships passing across the Tasman Sea, but it was only a brief summary of the cable news: enough to whet one's curiosity, rarely ever satisfying it.'

Ainsworth in Douglas Mawson's 'Home of the Blizzard'.
https://www.gutenberg.org/files/6137/6137-h/6137-h.htm#link2HCH0025