The ML-6427 and 6427 are medium-Mu triodes used in AM broadcast and industrial heating applications. The water-cooled anodes in these tubes are rated at 20 kilowatts. Characteristics Plate Dissipation (Max.) Screen Dissipation (Max.) Grid Dissipation (Max.) Frequency for Max. rating (CW) Amplification Factor Filament/Cathode Voltage Current Capacitance Input Output (Max.) Feedthrough Capacitance Input Output Feedthrough Cooling Base Air Socket Air Chimney Boiler Length Diameter Weight 20,000 Watts N/A 750 Watts 30 MHz 20 Thoriated Tungsten 8.0 Volts 200 Amps Grounded Cathode 50.0 pf 1.8 pf 38.0 pf N/A N/A N/A N/A Forced Air Special N/A N/A N/A 16.125 in; 40.9 cm 5.25 in; 13.3 cm 30 lb; 13.6 kg Maximum RatingsTypical Operation Class of Type of ServicePlate PlatePlateScreenPlate Operation VoltageCurrent Voltage VoltageCurrent (Volts) (Amps) (Volts) (Volts) (Amps) CIndustrial Oscillator CIndustrial Oscillator CPlate Modulated RF Amplifier (Telephony) 12,500 12,500 9,000 8.0 8.0 5.5 10,000 12,000 8,500 --- --- --- 6.5 6.4 4.8 Drive Output PowerPower (Watts) (kiloWatts) 900 670 1,100 46.4 55.4 30.7 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] CPI0809 CPI | ML-6427 / 6427 4CW50,000J ML-6427 / 6427