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ID = 33506
Tube type:  TR-switch 
Identical to 1B23 = 729A = QF10 = CV539
First Source (s)
07.Jun.1948 : Electron Tube Registration List 667
Predecessor Tubes 702B  

Was used by Radar

TR switch filled with hydrogen and water vapor. External cavity required.

  • 0.9 to 1.2GHz, 950MHz typical
  • 450KW peak power.

Introduced during WWII: 1944 date on datasheet, 3rd issue. Registered in 1948, when already discontinued by WE.

Bomac, Ferranti, WE and GE known sources.

Used in the Bendix RF-1/TPS-1. Replaced 702B with a modification kit.

Tube prices 1 Tube prices (visible for members only)
Information source - - Manufacturers Literature   
1B23: Meine Sammlung
Rudolf Osterkamp

1B23: Manufacturer's Literature
Emilio Ciardiello

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