A video posted on Youtube shows Callum, 2M0YCG in Scotland working a station in Australia using just 5 watts.
YouTube description reads:
This is me speaking to Paul VK4MA. Paul was beaming Long Path to Europe (unknown to me before our QSO) a distance of 23103 Km.
As you can see in the video I was using my usual setup - A Yaesu FT-817ND running 5 Watts into my Cobwebb Antenna (fed with RG58) @ about 7 Metres above the ground and a LDG Z-817Auto ATU. Although it took me about 20 calls hi hi...Paul managed to pick my signal out the QRN/pileup.