Sir Robert Watson-Watt KCB FRS FRAeS
(1892-1973)

Died aged c. 81

Sir Robert Alexander Watson Watt KCB FRS FRAeS (13 April 1892 – 5 December 1973) was a Scottish pioneer of radio direction finding and radar technology. Watt began his career in radio physics with a job at the Met Office, where he began looking for accurate ways to track thunderstorms using the radio signals given off by lightning. This led to the 1920s development of a system later known as high-frequency direction finding (HFDF or "huff-duff"). Although well publicized at the time, the system's enormous military potential was not developed until the late 1930s. Huff-duff allowed operators to determine the location of an enemy radio in seconds and it became a major part of the network of systems that helped defeat the threat of German U-boats during World War II. It is estimated that huff-duff was used in about a quarter of all attacks on U-boats. In 1935 Watt was asked to comment on reports of a German death ray based on radio. Watt and his assistant Arnold Frederic Wilkins quickly determined it was not possible, but Wilkins suggested using radio signals to locate aircraft at long distances. This led to a February 1935 demonstration where signals from a BBC short-wave transmitter were bounced off a Handley Page Heyford aircraft. Watt led the development of a practical version of this device, which entered service in 1938 under the code name Chain Home. This system provided the vital advance information that helped the Royal Air Force win the Battle of Britain. After the success of his invention, Watson Watt was sent to the US in 1941 to advise on air defence after Japan's attack on Pearl Harbor. He returned and continued to lead radar development for the War Office and Ministry of Supply. He was elected a Fellow of the Royal Society in 1941, was given a knighthood in 1942 and was awarded the US Medal for Merit in 1946.

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Commemorated on 3 plaques

In the year 1936 at Bawdsey Manor Robert Watson-Watt and his team of scientists developed the first air defence radar warning station. The results acheived by these pioneers played a vital part in the successful outcome of The Battle of Britain in 1940

Bawdsey, Bawdsey, United Kingdom where they was (1936)

Birth of radar memorial. On 26th February 1935 in the field opposite Robert Watson-Watt and Arnold Wilkins showed for the first time in Britain that aircraft could be detected by bouncing radio waves off them. By 1939 there were 20 stations tracking aircraft at distances up to more than 100 miles. Later known as radar, it was this invention. more than any other, that saved the RAF from defeat in the 1940 Battle Of Britain.

, Litchborough, United Kingdom where they was (1935)

Sir Robert Watson-Watt 1892-1973 Pioneer of Radar lived here

287 Sheen Lane, London, United Kingdom where they lived