BVWS Bulletin Volume 16 Supplement (December 1991)
Front cover: A U.S.A. Armoured car with collapsible observation and wireless turret.
|1||Hivac Midget Valves in German and British Clandestine Receivers.
|The use of 1930's midget valves in high frequency receivers.|
|7||The Early Years of Ediswan and Mazda.
|A history of the company’s starting from the 1880's.|
|14||The EF50 Valve in War and Peace.
|The EF50 and its developments, it's use in radar and the post-war surplus market.|