| GENERAL DESCRIPTION |
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The F-8550 is a general purpose triode designed for use as a radio-frequency amplifier, oscillator, or Class B modulator under CW or pulsed conditions. The forced-air cooled copper anode-radiator assembly of brazed construction is unusually light and compact for its CW rating of 45 kilowatts. The cathode is a thoriated tungsten filament and requires three phase wye filament excitation. The anode ratings apply up to 22 megacycles. |
| TECHNICAL SPECIFICATIONS | ||||
| ELECTRICAL | ||||
| Filament Voltage | 11 volts line-to-line | |||
| Filament Current | 190 Amperes per phase | |||
| Filament Starting Current | 600 Amperes per phase | |||
| Filament Cold Resistance | .008 Ohms line-to-line | |||
| Peak Cathode Current | 100 Amperes | |||
| Amplification Factor @ Ec = -200 V; Ib = 2 Amperes |
41 |
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| Direct Interelectrode Capacitance Grid-Plate Grid-Filament Plate-Filament |
37 μμf 75 μμf 2.0 μμf |
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| MECHANICAL | ||||
| Mounting Position | Vertical, Anode Down | |||
| Type of Cooling | Forced Air | |||
| Plate Dissipation | 45 | 35 | 25 | Kilowatts |
| Air Flow | 1700 | 1100 | 800 | cfm |
| Pressure | 6.5 | 2.7 | 1.2 | " of Water |
| Maximum Incoming Air Temperature | 50 | 50 | 50 | °C |
| Maximum Glass & Seal Temperature | 180°C, Maximum | |||
| Net Weight (Approximate) | 52 Pounds | |||
| Specifications may change without notice | ||||
| THIS TUBE IS USED IN THE FOLLOWING SHORTWAVE BROADCAST TRANSMITTERS | ||
| Manufacturer | Transmitter specifications | Power in kW |
| Gates | HF-100 | 100 |
| THIS TUBE IS AVAILABLE FROM | ||
| Manufacturer | Rebuilder | Distributor |
| 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 |