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 ---Peak anode current ················ Perk anode power input ············ Duty cycle ························ Pulse duration ···················· Rate of rise of voltage pulse ····· Anode temperature ················ V.S.W.R at the output coupler ····· Min 3.5 - Max 16.0 230 0.001 2.5 100 100 1.5:1 Unit A kW µs kV/µs °C - ---- ELECTRICAL ---Heater voltage (Note 1) ········· Preheat time ···················· Peak anode voltage (Note 2) ····· Peak output power (Note 2) ······ Frequency (Note 2) ·············· Min 5.7 120 11.0 8 9345 Typical 6.3 12.0 – Max 6.9 13.0 9405 Unit V S kV kW 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: Ef = 6.3 1 − Pi volts 150 where Pi=mean input power in watts. Note 2: Measured at peak anode current 12A 98-3