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ID = 81769
United States of America (USA)
Brand: Raytheon Mfg. Co.; Cambridge, MA
Tube type:  Pulse magnetron 
Identical to 2J70B = QKH1978 = M5063
Similar Tubes
Normally replaceable-slightly different:
Predecessor Tubes 2J70  

Was used by Radar
Filament Vf 6.3 Volts / If 1.1 Ampere / Half indirect

Fixed frequency magnetron; integral magnet, coaxial out. Commonly used in marine radar sets,

  • 3070 MHz
  • 7.5 kV at 15A input pulses
  • 20 kW peak output power typical, 100 kW max.

Similar to 2J70, used in the Raytheon/Selenia 1666-12S marine radar. 2J70B was also manufactured in Italy by Raytheon-Elsi, Palermo, later ElTel.

Also known with Raytheon internal code QKH 1978.

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