The plate is water-cooled and is capable of dissipating 12 to 20 kilowatts.
The design of the terminal mount connections and the introverted anode minimize lead inductance and make the tube particularly suitable for high-frequency applications.
| GENERAL DESCRIPTION |
|
The 880 is a three-electrode power tube designed for use as a radio-frequency amplifier, oscillator, or Class B modulator. The plate is water-cooled and is capable of dissipating 12 to 20 kilowatts. The design of the terminal mount connections and the introverted anode minimize lead inductance and make the tube particularly suitable for high-frequency applications. |
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| TECHNICAL SPECIFICATIONS | |
| ELECTRICAL | |
| Filament Voltage Current Starting Current Cold Resistance |
Tungsten 12.6 ac or dc volts 320 amp The filament current should never exceed 480 amperes, even momentarily. 0.003 ohm |
| Amplification Factor | 20 |
| Direct Interelectrode Capacitances Grid to Plate Grid to Filament Plate to Filament |
24 μμF 35 μμF 2 μμF |
| MECHANICAL | |
| Mounting Position | Vertical, Glass End Up |
| Maximum Overall Length | 11-½" |
| Maximum Diameter | 7" |
| Water Flow | 12 to 20 gpm |
| Air Flow | 20 min. cfm |
| Water Pressure in Jacket | 80 max. psi |
| Outlet Water Temperature | 70 max. °C |
| Bulb Temperature | 180 max. °C |
| Seal Temperature (Filament, grid, plate) | 165 max. °C |
| Specifications may change without notice | |
| THIS TUBE IS USED IN THE FOLLOWING SHORTWAVE BROADCAST TRANSMITTERS | ||
| Manufacturer | Transmitter specifications | Power in kW |
| RCA | 50-SW / MI-7330 | 50 |
| THIS TUBE IS AVAILABLE FROM | ||
| Manufacturer | Rebuilder | Distributor |
| Kennetron | 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 |