NEW GS 23b tube. One or more. The GS-23B power tetrode generates and amplifies power at up to 1,000 MHz in RF equipment. The GS-23b is generally considered to be similar to the 4CX1600U.Type: tetrode;Application field: power amplification up to 1,5kW and 1000MHz in special equipment;Brief application: Amplification, RF heating;Cathode: indirectly heated, oxide-coated;Envelope: metal-ceramic;Cooling method: forced air;Height: at most 120 mm (4,7"); diameter: at most 90 mm(3,5"); mass: at most 1.1 kg (2,51 Lbs).Output power: 1.5 kWMax anode voltage: 2500V;Max anode pick voltage: 3500V;Max cathode current: 1.9A;Max anode dissipation power: 1500W;Max the first grid dissipation power: 1.5W;Max the second grid dissipation power: 12W.