GU-33B Vacuum Tetrode Tube From the Ukraine Heater V 6.3 Volt Heater I 4.7 to 5.6 Ampere Plate Volts 1500 DC Plate disipation 150 W Screen 400 V Cathode current Avg 340 mA Peak Cathode current 1000 mA Upper Operating Frequency 500 MHz Warm-up time 150 seconds max Service life expectancy in excess of 1500 hrs. Tubes offered are in original pastic bag with documentation Price is per each there are 6 available
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