Pulse modulator tetrode GMI-83V (ГМИ-83B) is a variant of GMI-83 tube with improved reliability. Maximum anode dissipation is 60W. Maximum anode current: 15A. Max. height of the tube: 146,5 mm. Max. diameter: 65 mm. Weight of the whole box: about 450g. Although the tubes are unused, they were pre-burned at the time of income, so they do have some visible burn marks. Longer time stored items in original boxes. Please see the gallery for more details. Years of production may differ.