Piece
Attached to BT 217/1515
Catalogue reference: BT 217/1516
Date: 1939-1940
Attached to BT 217/1515
Piece
Catalogue reference: BT 217/1524
This record is about the Development of an automatic radio compass for ground direction finder stations dating from 1947-1950 in the series Air Ministry and Successors: Civil Aviation (R Series) Files. It is held at The National Archives, Kew.
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Development of an automatic radio compass for ground direction finder stations
BT 217
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Development of an automatic radio compass for ground direction finder stations
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