| GENERAL DESCRIPTION |
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The 8122 is a very small, low-cost, forced-air-cooled beam power tetrode designed for use as an RF power amplifier, oscillator, regulator, distributed amplifier, or linear amplifier in mobile or fixed equipment. The terminal arrangement of the 8122 facilitates use of the tube with tank circuits of the coaxial or strip-line type. Effective isolation of the output circuit from the input circuit is provided at the higher frequencies by the low-inductance ring termination for grid-2. A base-pin termination for grid-2 is also available for operation of the 8122 at the lower frequencies. |
| TECHNICAL SPECIFICATIONS | |
| ELECTRICAL | |
| Frequency (Max.) | 500 MHz |
| Heater Voltage Current |
13.5 V 1.3 A |
| Mu-Factor (G1 to G2) | 12 |
| Capacitance G1-K G2-P |
16.3 pF 7.0 pF |
| MECHANICAL | |
| Cooling | Forced Air |
| Max. Length | 57.4 mm (2.26 in) |
| Max. Diameter | 41.7 mm (1.64 in) |
| Weight | 99 g (3.5 oz) |
| Operating Position | Any |
| MAXIMUM RATINGS | |
| Anode Dissipation | 400 W |
| Grid-2 Dissipation | 8 W |
| RF AMPLIFIER - CLASS B TELEGRAPHY SERVICE - TYPICAL OPERATION | |
| Anode Voltage | 2.0 kV |
| Grid-2 Voltage | 250 V |
| Anode Current | 300 mA |
| Drive Power | 8 W |
| Power Output | 300 W |
| Frequency | 470 MHz |
| Specifications may change without notice | |
| THIS TUBE IS USED IN THE FOLLOWING SHORTWAVE BROADCAST TRANSMITTERS | ||
| Manufacturer | Transmitter specifications | Power in kW |
| Gates | HC-114 | 250 |
| THIS TUBE IS AVAILABLE FROM | ||
| Manufacturer | Rebuilder | Distributor |
| Penta Laboratories | Richardson Electronics | |
| 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 |