The 3CX1500C7/8938 is a rugged coaxial base power triode designed for use as a cathode driven Class AB2 or Class C amplifier. It is recommended for VHF or UHF service as a linear amplifier, power amplifier, or pulse amplifier. Linearity and power gain are both excellent due to the low ratio of grid to plate current, and the relatively high amplification factor. Low grid interception of available emission current is due to the beam forming geometry of the special grid and cathode design. Class of Operation C AB2 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) Cathode driven RF amplifier at 400 MHz Cathode driven RF linear amplifier at 108 MHz 4,000 4,000 1.0 1.0 T ypical Operation Plate Screen Voltage Voltage (Volts) (Volts) 3,000 3,500 1,500 Watts --20 Watts 500 MHz 125 Oxide Coated 5.0 Volts 10.5 Amps Grounded Grid 35.5 pf 12.4 pf .14 pf ----- pf --- pf --- pf Forced Air Coaxial SK-2220 SK-2216 --3.68 in; 9.34 cm 3.38 in; 8.58 cm 25 oz ; 709 gm Plate Current (Amps) Drive Output Power Power (Watts) (kiloWatts) --- 1.0 83 1.57 --- 0.97 50 2.03 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 | 3cX1500C7/ 8938 CPI | 4CW50,000J 3CX1500C7/8938