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| cpi | 4cx12,000a/ 8989 cpi|4cW50,000J 4cx12,000a/8989 The 4CX12,000A/8989 is intended for use in VHF radio frequency applications. It features an internal mechanical structure which results in high RF operating efficiency. Low RF losses in this structure permit operation at full ratings up to 220 MHz. The 4CX12,000A/8989 has a gain of 18 dB in FM broadcast service, and is also recommended for RF linear amplifier service, and for VHF-TV linear amplifier service. The anode is rated for 12 kilowatts of dissipation with forced air-cooling and incorporates a new highly efficient cooler design, which significantly reduces air pressure and flow requirements and produces low acoustical noise. 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 Boiler Length Diameter Weight 12,000 Watts 300 Watts 150 Watts 220 MHz 6.7 Thoriated Tungsten 6.5 Volts 120 Amps Grounded Cathode 160.0 pf 18.5 pf 1.0 pf Grounded Grid 70 pf 18.6 pf 0.1 pf Forced Air Special, Coaxial SK-300A --9.84 in; 24.99 cm 7.76 in; 19.71 cm 19.2 lb; 8.75 kg typeofservice RFamplifier,grid-driven RFamplifierat90.5MHz RFamplifierat108.1MHz MaxiMuMRatings plate Voltage (Volts) 10,000 10,000 10,000 plate current (amps) 3.5 3.5 3.5 ypicalOpeRatiOn t plate current (amps) 2.83 3.08 2.81 Drive Output power power (Watts) (kiloWatts) 23 245 275 20.0 22.9 22.5 classof Operation c c c plate screen Voltage Voltage (Volts) (Volts) 9,000 9,950 10,000 750 650 800 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. Forinformationon 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: powergrid@cpii.com |
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