The Shadow Network which forms the title of my latest book refers to the fake news radio stations set up by Sefton Delmer in WW2. These secret radio stations operating in WW2 pretended to be genuine German radio stations and employed German prisoners of war or other German speakers to make their broadcasts. The broadcasts were deliberately racy and were designed to capture the hearts of ordinary Germans and make them believe they were listening to a forbidden radio station from their own country. Their popularity spread, and they got wide audiences for their programmes.
The radio signal for these ‘fake news’ radio stations needed to be strong enough to appear as though it came from Germany and had to be more powerful than anything that was then available.
By coincidence, the Radio Corporation of America (RCA) had created two high-powered radio transmitters which could not be used in the US, because of a change in American law. The RCA were eager to sell them to Britain. So Harold Robin, (pictured above) a Foreign Office radio engineer, saw their potential, and travelled to America to examine them, and then worked to improve them. He adapted a transmitter so it was able to move frequency in a fraction of a second, at the flick of a switch.
The powerful ex-RCA transmitter, eventually installed in Sussex, England, was named Aspidistra, referencing the popular Gracie Fields song ‘The Biggest Aspidistra in the World’, in which an Aspidistra houseplant grows until it ‘nearly reached the sky’.
In fact, most of the technology was buried underground at the site at Crowborough, though its antennae were visible – three guyed masts, each 110 metres tall, directing the signal broadly eastwards. The Art Deco–style transmitter building was housed in an underground shelter which had to be excavated by the Canadian army troops who were stationed nearby.