Vol. 18, No. 4

Volume 18 - No. 4

On the Cover

In this issue
  • Identification of the Radio Equipment Used on the NC-4 Plane Analysis of the equipment and which tube they used during the first trans-Atlantic flight.
  • Selling Tubes on Consignment Electronics, June, 1932.
  • The Locked-Door Tube Factories Radio magazine, Nov., 1924.
  • Wierd Tube of the Month: The Arctarus Coronet Arctarus introduces a metal line of tubes with a glass button stem.
  • Demountable Tube – The GE FZ-1 GE produces a 100 kilowatt transmitting tube with a replacable filament.

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