| GENERAL DESCRIPTION |
|
The F-6804 is a three electrode tube designed for use as a radio frequency amplifier, oscillator, or Class B modulator. The anode is forced air cooled and is capable of dissipating 25 kilowatts during Continuous Commercial Service. The cathode is a thoriated tungsten filament of free hung design and filament excitation of 3-phase wye is required. Maximum ratings supply up to 22 megacycles. |
| TECHNICAL SPECIFICATIONS | ||||
| ELECTRICAL | ||||
| Filament Voltage, Line to Line | 11.0 Volts | |||
| Filament Current, Per Phase | 190 Amperes | |||
| Filament Starting Current | 600 Amperes | |||
| Filament Heating Time | 15 Seconds | |||
| Amplification Factor Ec = -100 V. Ib = 2.0 Amperes |
40 |
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| Peak Cathode Current | 100 Amperes | |||
| Direct Inter-electrode Capacitances Grid-Plate Grid-Filament Plate-Filament |
37 µµf 75 µµf 2.2 µµf |
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| MECHANICAL | ||||
| Mounting Position | Vertical, Anode Down | |||
| Air Flow Through Radiator | The tabulation listed below indicated the required flow of incoming air, through the radiator, for the various plate dissipation values. Cooling air to be applied before the application of filament power and to continue for 3 minutes after removal of filament power | |||
| Percentage of Maximum Rated Plate Dissipation for Each Class of Service | 100% Rating | 80% Rating | 60% Rating | |
| Air Flow | 1,800 | 1,450 | 1,100 | Min. cfm |
| Static Pressure | 2.2 | 1.5 | 0.85 | " of Water |
| Radiator Temperature Measured on the core at end away from incoming air |
180°C, Maximum | |||
| Maximum Incoming Air Temperature | 45°C, Maximum | |||
| Glass Temperature At hottest part |
180°C, Maximum | |||
| Net Weight (Approximate) | 123 Pounds | |||
| Specifications may change without notice | ||||
| THIS TUBE IS USED IN THE FOLLOWING SHORTWAVE BROADCAST TRANSMITTERS | ||
| Manufacturer | Transmitter specifications | Power in kW |
| Gates | HF-50 C | 50 |
| HF-100 C | 100 | |
| THIS TUBE IS AVAILABLE FROM | ||
| Manufacturer | Rebuilder | Distributor |
| 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 |