| GENERAL DESCRIPTION |
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The 4CX12,000A is intended for use in audio or 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 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. |
| TECHNICAL SPECIFICATIONS | |
| Plate Dissipation (Max.) | 12,000 Watts |
| Screen Dissipation (Max.) | 300 Watts |
| Grid Dissipation (Max.) | 150 Watts |
| Frequency for Max. Ratings (CW) | 220 MHz |
| Cooling | Forced Air |
| Filament Voltage Current |
Thoriated Tungsten Mesh 6.5 volts 120 amperes |
| Capacitances (Grounded Cath. Connection) Input Output Feed-through |
160 pF 18.5 pF 1.0 pF |
| Capacitances (Grounded Grid Connection) Input Output Feed-through |
70 pF 18.6 pF 0.1 pF |
| Amplification Factor (g1-g2) | 6.7 |
| Base | Special, Coaxial |
| Recommended Air-System Socket | SK-300A |
| Recommended Air Chimney | SK-336 |
| Maximum Seal & Anode Core Temperature | 250°C |
| Maximum Length | 9.84 in; 24.99 cm |
| Maximum Diameter | 7.76 in; 19.71 cm |
| Weight (approximate) | 19.2 lb; 8.75 kg |
| Operating Position | Vertical, base down |
| Specifications may change without notice | |
| THIS TUBE IS USED IN THE FOLLOWING SHORTWAVE BROADCAST TRANSMITTERS | ||
| Manufacturer | Transmitter specifications | Power in kW |
| Elcor | SW-12 K | 12 |
| THIS TUBE IS AVAILABLE FROM | ||
| Manufacturer | Rebuilder | Distributor |
| Eimac | Econco | Richardson Electronics |
| Penta Laboratories | Kennetron | |
| PRICE LEVEL (US$) | |||||
| 1 | 2 | 3 | 4 | 5 | 6 |
| 0 - 10 | 10 - 100 | 100 - 1000 | 1000 - 10,000 | 10,000 - 50,000 | 50,000 - 100,000 |