Many thanks to SWLing Post contributor Adi, who writes: Hi Thomas, I'm reading the book about the 1957-58 Commonwealth Trans-Antarctic Expedition. It hold many remarks of their radio operations with various antarctic bases and even with hams in Europe. https://en.wikipedia.org/wiki/Commonwealth_Trans-Antarctic_Expedition So I went to Youtube, I found two contemporary films one at 17:20, frankly I [...]