This is super powerfull amplifier build on GS-35b tube which characteristics are:
Intermodulation distortion of the 3rd order -minus 32 dB
Anode Dissipation - 2.5 kW
Grid Dissipation - 26 W
Cathode- Oxide coated Heater voltage - 12,6V
Heater current - 2.95A
Maximum CW Anode voltage -4.0 kV
Maximum Instantaneous value Anode voltage-8.0 kV
Maximum CW Cathode current-1.4 A
Transconductance at Ua= 2.0 kV Ia = 350 mA -->32.5 mA/V
Capacitance Input /Output /Feed-through / -21 pF /4.4 pF/0.12 pF-Max.
Seal and Envelope Temperature -200 C
Maximum Length -177 mm Maximum Diameter -100 mm
Weight with heat sink: 2.5 kgs
Input power range from 70 to 80 Watt.
Output power up to 1KWt!
Fequency range from 1.8 to 28 MHz!