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ID = 78090
Brand: Toshiba Corporation; Tokyo
Tube type:  Transmitting Triode, air cooled   VHF 
  Ca. 1925 up to 1945 extraordinarily rare. Production was less than 100 items. ****
Identical to RT-323

Was used by Radar
Filament Vf 16 Volts / If 20 Ampere / Direct

VHF external-anode power triode, forced-air-cooled. Thoriated-tungsten folament. Factory installed finned radiator. Likely made by Toshiba to be used as pulsed oscillator in the Tachi No.7 radar set, generating 50 kW peak pukses at 100 MHz.

  • 10 kV peak anode voltage
  • 6.5 mA mean current
  • 750 W max anode dissipation
  • 120 MHz max operating frequency.
  • 50 kW typical pulse power at 100 MHz.

Development started in October 1942. Prototypes completed in April 1943.

Dimensions (WHD)
incl. pins / tip
92 x 175 x mm / 3.62 x 6.89 x inch
Information source -- Collector info (Sammler)   
RT-323: Private collection
Emilio Ciardiello


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