The Heinkel He 100 fighter set a world airspeed record of 745 km/h or 463 mph OTD in 1939 https://cromwell-intl.com/travel/uk/swingate-chain-home/?s=mb #travel #WorldWarII #history

Swingate Chain Home Radar Station
Visiting the Swingate Chain Home radar site. World War II defense for Britain, built in the late 1930s just outside Dover, England. Original Chain Home stations used 20-46 MHz, later systems operated at mid VHF frequencies and up to 3 GHz.