The 4CM2500KG/X-2274 is a ceramic/metal, water vapor cooled power tetrode designed for very high powered RF service. The 4CM2500KG has a high density thoriated tungsten mesh filament mounted on water-cooled supports. Pyrolytic graphite control and screen grids are used to provide the necessary stability and power dissipation rating. The maximum anode dissipation rating is 2500 kilowatts steady state. Large diameter coaxial terminals are used for the control grid and the RF cathode terminals. Filament power and filament support cooling water connections are made through two special connectors. Anode cooling water connectors are made with available hand tightened connectors. Class of Operation AB Characteristics Plate Dissipation (Max.) Screen Dissipation (Max.) Grid Dissipation (Max.) Frequency for Max. rating (CW) Max useful frequency (derated power) Amplification Factor (grid to screen) Gain Efficiency Filament/Cathode Voltage Current Capacitance Input Output Feedthrough Capacitance Input Output Feedthrough Cooling Base Air Socket Air Chimney Boiler Length Diameter Weight Maximum Ratings Type of Service Plate Voltage (Volts) Plate Current (Amps) RF power amplifier (grounded grid) 27,000 200 T ypical Operation Plate Screen Voltage Voltage (Volts) (Volts) 24,000 2,800,000 Watts 20,000 Watts 8,000 Watts 80 MHz 210 MHz 6 13.5 67.4% Thoriated Tungsten 15.5 Volts 675 Amps Grounded Cathode 1150 pf 150 pf 5.0 pf ----- pf --- pf --- pf Vapor and Forced Air Special Coaxial ------18.75 in; 476.20 mm 17.03 in; 432.60 mm 153.0 in 69.5 kg 2,000 Plate Current (Amps) 173 Drive Output Power Power (Watts) (kiloWatts) 124.0 2,800.00 The values listed above represent specified limits for the product and are subject to change. The data should be used for basic information only. Formal, controlled specifications may be obtained from CPI for use in equipment design. For information on this and other CPI products, visit our website at: www.cpii.com, or contact: CPI MPP Division, Eimac Operations, 607 Hansen Way, Palo Alto, CA 94303 telephone : 1(800) 414-8823. fax : (650) 592-9988 | email : [email protected] CPI | 4CM2500KG/ X-2274 CPI | 4CW50,000J 4CM2500KG/X-2274