The 4CX3500A is a compact tetrode designed to be used in VHF power amplifier service. It features a type of internal structure which results in high RF operating efficiency up to 220 MHz. This tube is also recommended for use as a VHF TV linear amplifier. for use as a Class C radio frequency power amplifier and plate-modulated, radio frequency power amplifier. Class of Operation 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 Maximum Ratings Type of Service Plate Voltage (Volts) Plate Current (Amps) 3,500 Watts 162 Watts 50 Watts 220 MHz 4.5 Thoriated Tungsten 5.0 Volts 90 Amps Grounded Cathode 58.5 pf 10.0 pf 0.5 pf Grounded Grid 58.5 pf 10.0 pf 0.4 pf Forced Air Special Coaxial SK-340 ----3.25 in; 346 mm 7.25 in; 181.45 mm 4.94 oz; 125 gm T ypical Operation Plate Screen Voltage Voltage (Volts) (Volts) Plate Current (Amps) Drive Output Power Power (Watts) (kiloWatts) C Grid driven RF amplifier 5,500 2.0 5,000 500 1.32 25 5.28 C Grid driven RF amplifier 5,500 2.0 4,300 750 1.90 66 5.53 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 : [email protected] CPI | 4CX3500A CPI | 4CW50,000J 4CX3500A