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High power water-cooled transmitting tube, ca. 1929

Federal Telegraph & Radio Co.1929/1930

History San José

History San José
San Jose, United States

This water-cooled, high-power (5 kW) radio frequency amplifier (transmitting) vacuum tube is believed to have been manufactured by Federal Telegraph & Radio Co., Palo Alto, California, while James F. Lee worked there as a glassblower. Scratched on the socket is "15 BAR."

Details

  • Title: High power water-cooled transmitting tube, ca. 1929
  • Creator: Federal Telegraph & Radio Co.
  • Date: 1929/1930
  • Location: Palo Alto (Calif.)
  • Physical Dimensions: 16 x 4 in.
  • Provenance: James Lee Tube Collection, History San José
  • Type: physical object

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