Transmitting Tube

  1. TH382_FC307F(1403) UHF Tetrode
  2. Peak-of-sync output power in combined amplification: 5.25 kW
  3. Peak-of-sync output power in vision carrier amplification: 11kW

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1403_FC307F_2015_TH382 UHF TETRODE

Peak-of-sync output power in combined amplification: 5.25 kW

Peak-of-sync output power in vision carrier amplification: 11 kW

The high power metal ceramic tetrode FC 307F is fitted with thoriated tungsten mesh as cathode and molybdenum tube as grid, which is applicable for power amplification of 3~5kW decametric wave combined amplification and 10kW vision carrier amplification. The max. working frequency could reach 1000MHz.

General Characteristics

General Characteristics
Cathode thoriated tungsten
Heating direct, DC or single phase AC
Filament voltage 4.2 V (1)
Filament current 125 A (1)
Interelectrode capacitances, approx.:
Cathode-control grid

72pF

Control gird-screen grid 93pF
Screen gird-anode 13.2pF
Transconductandce (la=1.5A, Ug2=600V) 80mA/V
Internal amplification factor, average 8
Operating position vertical
Weight, approx. 7kg
Anode cooling (2) forced air
Air flow, min. 13000L/min
Corresponding pressure drop 800Pa
Temperature at air outlet, max. 100℃
Cooling method forced air
Temperature on the surface of the tube, max. 300℃

Maximum ratings

Frequency 1000 MHz
Anode voltage 6.5 kV
Anode current  4.5 A
Anode dissipation 12.5 kW
Control-grid dissipation 50 W
Screen-grid dissipation 120 W
Typical operation Combined amplification Vision only
Frequency 800 800 MHz
Peak-of-sync output power 5.25 11 kW
Band width (-1dB) 8 6 MHz
Intermodulation distciton -52 - dB
Gain 15.5 15.4 dB
Anode voltage 5.5 5.5 kV
Screen-grid voltage 600 600 V
Anode current, with signal 2.7 1.2 A
Anode current, at zero signal 1.5 1.2 A
Control-grid current 10 5 mA
Screen-grid current 30 30 mA