BVWS Bulletin Volume 9, Number 3 (December 1984)
Front cover: Marconi-Riesz carbon Microphone as used by the B.B.C. From 1924 until the mid-1930s.
|43||B.B.C. Microphones, 1922-1935.
|The development of microphones, including the magnetophone, the “Round-Sykes” and “Marconi-Reisz”|
|46||An Irish Museum.||The R.T.E. Museum near Dublin.|
|A brief history of the Ferranti AF2 inter-valve transformer of 1923.|
|The early days of 30-line television.|
|The early days of radio specifically for children.|