The 4CX1500A is a general purpose tetrode for use up to and through VHF. Insulation is ceramic and the thoriated tungsten filament is a rugged mesh design. The screen terminal is a continuous ring which allows good isolation between the plate and the control grid circuit. The 4CX1500A is recommended for use as a Class C power amplifier, Class B or Class AB1 linear amplifier, and as a regulator and in pulse modulator service. 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 1,500 Watts 75 Watts 25 Watts 150 MHz 5.5 Thoriated Tungsten 5.0 Volts 38.5 Amps Grounded Cathode 78.0 pf 10.5 pf 0.5 pf N/A N/A N/A N/A Forced Air Special, Breechblock SK-831 SK-806 N/A 4.90 in; 124.50 mm 3.37 in; 85.60 mm 36 oz; 850 gm Maximum RatingsTypical Operation Class of Type of ServicePlate PlatePlateScreenPlate Operation VoltageCurrent Voltage VoltageCurrent (Volts) (Amps) (Volts) (Volts) (Amps) C RF Amplifier at 30 MHz C RF Amplifier at 220 MHz C RF Amplifier Plate Modulated at 30 MHz AB RF Linear Amplifier at 30 MHz ABAF Amplifier or Modulator (2 tubes) 5,000 3,000 3,500 4,000 4,000 1.0 1.0 0.8 1.0 1.0 4,000 3,000 3,400 3,900 3,900 500 500 500 600 600 0.80 1.01 0.90 0.75 1.5 Drive Output PowerPower (Watts) (kiloWatts) 3.6 31.5 10 --- --- 2.5 1.5 2.32 1.85 3.7 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 MPP products, visit our website at: www.cpii.com, or contact: CPI Microwave Products Division, Eimac Operation,607 Hansen Way, Palo Alto, CA 94303 telephone : 1(800) 414-8823. fax : (650) 592-9988 | email : [email protected] CPI | 4CX1500A 4CW50,000J 4CX1500A