The GMI-90 or ГМИ-90 is a 140 watt Russian pulse tetrode. Length = 9.50" Diameter = 5.50" Max voltage = 33000 Max current = Fil voltage = 25 Fil current = 6.5 to 7.8 amps GOTO INDEX
The GMI-90 or ГМИ-90 is a 140 watt Russian pulse tetrode.