Zendmasts of Ruiselede were eight 287 metre high guyed radio masts at Ruiselede , Belgium , built in 1923 for carrying an aerial for VLF transmission ( nominal frequency 16.2 kHz ) . On 30 December 1933 , an Imperial Airways aircraft crashed into a mast and demolished it . Most of the masts were blown up by German troops in October 1940
crashed into a mast
1933 Imperial Airways Ruysselede crash
Zendmast Ruiselede