2J55 x-band magnetron 2J55 is a fixed frequency pulsed type x-band magnetron, designed to operate in the frequency range of 9345 to 9405 mhz with a peak output power of 50 kw. it is packaged and waveguide output type and forced air cooled. ---- maximum ratings ---- min max unit peak anode current 3.5 16.0 a perk anode power input - 230 kw duty cycle - 0.001 - pulse duration - 2.5 s rate of rise of voltage pulse - 100 kv/s anode temperature - 100 c v.s.w.r at the output coupler - 1.5:1 - ---- electrical ---- min typical max unit heater voltage (note 1) 5.7 6.3 6.9 v preheat time 120 - - s peak anode voltage (note 2) 11.0 12.0 13.0 kv peak output power (note 2) 8 - - kw frequency (note 2) 9345 ? 9405 mhz note 1: measured with heater voltage of 6.3v and no anode input power, the heater current 1imits are 0.9a minimum, 1.1a maximum. for average pulse input powers less than 150 watts the heater voltage must be reduced within 3 seconds after the application of h. t. according to the following schedule: 150 pi 1 6.3 ef - = volts where pi=mean input power in watts. note 2: measured at peak anode current 12a 9 8-3
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