1930
成人快手 Research Department launches in April 1930
In 1930 the remaining Development section becomes the Research Department. The new department is led by H.L. Kirke, first as Senior Development Engineer and from 1936 as Head of Research Department, a position he held until 1950. It's first location is Avenue House in Clapham.
1932
Research Department moves to 74 Nightingale Lane in Balham
From nearby Avenue House, Clapham. This building was a former Jewish 成人快手 of Rest.
1934
Research Department moves to Nightingale Square
This was formerly a convent and situated very close to Nightingale Lane.
1937
Research Department develops the first close-talking noise-cancelling ribbon microphone giving the broadcast speech, the L1
It is the predecessor of the lip mic which was developed in 1949.
1939
Many staff from department leave to join the armed forces and the war effort.
The few that remain are concerned with investigations into HF problems and developments of antennas and antenna arrays. Some worked on disc recording apparatus, including types used by front-line correspondents.
