4CX25-000A

cpi | 4 cx25,000a cpi | 4cW50,000J 4cx25,000a The 4CX25,000A is a ceramic/metal power tetrode intended for use in VHF-TV linear amplifier service. It features a type of internal mechanical structure which results in high RF operating efficiency. Low RF losses in this structure permit operation at full range to 230 MHz in TV linear amplifier service. The anode is rated for 25 kW dissipation with forced- air cooling and uses a highly efficient cooler, which significantly reduces air pressure and flow requirements and produces low acoustical noise. chaRacteRistics Plate Dissipation (Max.) Screen Dissipation (Max.) Grid Dissipation (Max.) Frequency for Max. rating (CW) Amplification Factor Filament/Cathode Voltage Current Capacitance Input Output Feedthrough Capacitance Input Output Feedthrough Cooling Base Air Socket Air Chimney Boiler Length Diameter Weight 25,000 Watts 300 Watts 180 Watts 230 MHz 6.7 Thoriated Tungsten 8.5 Volts 150 Amps Grounded Cathode 170 pf 18.6 pf 0.6 pf Grounded Grid 79 pf 19 pf .07 pf Forced Air Special, Coaxial SK-320 SK-326 --9.15 in; 23.2 cm 8.86 in; 22.5 cm 26.4 lb; 12 kg type of service MaxiMuM Ratings plate Voltage (Volts) 9,000 plate current (amps) 8.0 ypical OpeRatiOn t plate current (amps) 5.35 Drive Output power power (Watts) (kiloWatts) 1200 32.0 class of Operation aB plate screen Voltage Voltage (Volts) (Volts) 7,800 1,080 RF power amplifier, visual tV service (cathode driven) 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 Operation, 607 Hansen Way, Palo Alto, CA 94303 telephone : 1 (800) 414-8823. fax : ( 650) 592-9988 | email : powergrid@cpii.com