The shortwave broadcast wasn't aiming for big global listenership. Indeed, there were perhaps only a few dozen pairs of ears for whom the special programme was intended. Still, the BBC's Antarctic Midwinter Broadcast is a shortwave tradition Down Under. This year, its 70th anniversary year, was no different. Scientists and support staff of the British Antarctic Survey Team were tuned in on the 21st of June to hear welcoming messages from home - including a pre-recorded greeting from King Charles, the first monarch to participate in the tradition.
The show only lasted a half-hour but has been a big part of a midwinter at British research stations on the frozen continent for decades.