TH347_FC502F UHF TETRODE
Peak-of-sync output power in combined amplification: 1.1kW
Peak-of-sync output power in combined amplification: 2.2kW
General characteristics
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Cathode
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thoriated tungsten
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Heating
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direct, DC single phase AC
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Filament voltage
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6 V (1)
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Filament current
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34A (1)
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Interelectrode capacitances (cathode earthed), approx.
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Cathode-control grid
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40 pF
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Cathode grid-screen grid
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50 pF
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||
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Screen grid-anode
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8.2 pF
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Transconductance
(la=1.5A, Ug2=400V)
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40mA/V
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Temperature on the surface of the tube, max.
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250℃
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Internal amplification factor, average
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7
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Operating position
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vertical
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Temperature at air outlet, max.
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100℃
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amplification factor, average
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180
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Anode cooling
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forced air
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Weight, ( approx. )
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2.3 kg
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Air flow, min.
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2500 L/min
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Air pressure, max.
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300Pa
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(1) the operating filament voltage must be defined according to each particular situation, the range of the filament voltage being 6V± 3%.
As an indication for equipment design purposes only a given heater voltage of 6V produces a given filament current of 34A
(2) values for cooling given for 2.5kW anode dissipation
Maximum ratings
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Frequency
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1000MHz
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Anode dissipation
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4.5 kW
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Anode voltage
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5 kV
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Screen-grid dissipation
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25W
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Anode current
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2 A
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Control-grid dissipation
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5 W
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