The 4CX250R/7580W is designed specifically for use in Class AB1 linear amplifiers where shock and/or vibration preclude the use of non-ruggedized tube types. The 4CX250R/7580W will replace the 4CX250B in equipments where the range of bias adjustment will tolerate this higher purveyance tube and where tuning range can compensate for the small differences in input and output capacitances. The 4CX250R/7580W will deliver more output in most linear amplifiers which presently employ the 4CX250B and it will operate with maximum rated plate and screen voltage applied in euipments where shock and/or vibration is experienced. 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) 250 Watts 12 Watts 2 Watts 500 MHz 5 Oxide Coated 6.0 Volts 2.6 Amps Grounded Cathode 17.5 pf 4.8 pf .04 pf ----- pf --- pf --- pf Forced Air 9 Pin Special SK-600A SK-606 --2.46 in; 62.50 mm 1.64 in; 41.70 mm 4 oz; 113 gm T ypical Operation Plate Screen Voltage Voltage (Volts) (Volts) Plate Current (Amps) Drive Output Power Power (Watts) (kiloWatts) AB1 RF linear Amplifier 2,000 0.25 2,000 400 0.25 --- 0.3 AB1 RF linear amplifier (AM service) 2,000 0.25 2,000 400 0.17 --- 0.1 AB1 AF amplifier or modulator 2,000 0.25 2,000 350 0.50 --- 0.595 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 | 4CX250R/7580W CPI | 4CW50,000J 4CX250R/7580W