| GENERAL DESCRIPTION |
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The 4CX1000A / 8168 is a ceramic/metal, forced-air cooled, radial-beam tetrode with a rated maximum plate dissipation of 1000 watts. It is a low-voltage, high-current tube specifically designed for Class-AB1 rf linear-amplifier or audio-amplifier applications where its high gain may be used to advantage. At its rated maximum plate voltage of 3000 volts, it is capable of producing 1630 watts of peak-envelope output power. Two 4CX1000A / 8168s operating in Class-AB1 will produce 3260 watts of audio power. |
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| TECHNICAL SPECIFICATIONS | |
| Plate Dissipation (Max.) | 1000 watts |
| Screen Dissipation (Max.) | 12 watts |
| Grid Dissipation (Max.) | 1 watt |
| Frequency for Max. Ratings (CW) | 110 MHz |
| Cooling | Forced Air |
| Cathode Voltage Current |
Oxide-coated Unipotential 6.0 volts 9.0 amperes |
| Capacitances (Gnd. Cath. Connection) Input Output Feed-through |
81.0 pF 11.8 pF 0.015 pF |
| Capacitances (Gnd. Grid. Connection) Input Output Feed-through |
35.5 pF 12.0 pF 0.004 pF |
| Transconductance | 37,000 μmhos |
| Base | Special, Breechblock |
| Recommended Air-System Socket | SK-800B |
| Recommended Air Chimney | SK-806 |
| Maximum Seal & Anode Core Temperature | 250°C |
| Maximum Length | 4.80 in; 122.00 mm |
| Maximum Diameter | 3.37 in; 85.50 mm |
| Weight (approximate) | 27 oz; 0.77 kg |
| Operating Position | Any |
| Specifications may change without notice | |
| THIS TUBE IS USED IN THE FOLLOWING SHORTWAVE BROADCAST TRANSMITTERS | ||
| Manufacturer | Transmitter specifications | Power in kW |
| Collins Radio | 204F-1 | 2.5 |
| 204H-1 | 2.5 | |
| THIS TUBE IS AVAILABLE FROM | ||
| Manufacturer | Rebuilder | Distributor |
| 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 |