TUBE F-6804

GENERAL DESCRIPTION


picture F-6804 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
Peak Cathode Current 100 Amperes
Direct Inter-electrode Capacitances
Grid-Plate
Grid-Filament
Plate-Filament

37 µµf
75 µµf
2.2 µµf
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