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ID = 34860
United States of America (USA)
Brand: General Electric Co. (GE); Bridgeport CT, Syracuse NY
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  CW-magnetron 
Identical to 5J30 = CV3843 = ZP590
Similar Tubes
Other shape (e.g. bulb type):
First Source (s)
05.Jan.1946 : Tube Lore (I)

Was used by Radar
Filament Vf 2.2 Volts / If 35 Ampere / Direct

External magnet, split-anode, glass body magnetron; 150 to 385 MHz; 75 to 150 W CW out. Water cooled through coaxial tubing in the anode pins. Protective copper baffles to prevent glass melting due to electron bombardment.

  • 1500 gauss flux density
  • 450 mA max at 2500 V.

Also manufactured by Federal (ITT).

1946 RMA registration, even if the tube was in production since 1944 as ZP590.

Information source Tube Lore (I)   
-- Original-techn. papers.   Very High Freq. Techniques, II, McGraw-Hill
5J30: Private collection
Emilio Ciardiello

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5J30: Manufacturer's Literature
Emilio Ciardiello

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