Electron tube 1408_FC502F_2014_TH347 UHF TETRODE

Electron tube_Electronic tube_Power tube1408_FC502F_2014_TH347 UHF TETRODE Peak-of-sync output power in combined amplification: 1.1kW Peak-of-sync output power in combined amplification: 2.2kW General characteristics Cathode thoriated tungsten Heating direct, DC single phase AC Filament voltage 6 V (1) Filament current 34A (1) Interelectrode capacitances, approx,: Cathode-control grid 40pF Control gird-screen grid50 pF Screen grid-anode 8.2pF Transconductandce (la=1.5A, Ug2=400V) 40mA/V Internal amplification factor, average 7 Operating positionvertical Weight, approx.2.3kg Anode cooling(1)forced air Air flow, min. 2500L/min Air pressure, max. 300Pa Temperature at air outlet, max 100 Cooling at the sealing between electrode terminal and ceramic forced air Temperature on the surface of the tube, max 250 (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 Frequency 1000 MHz Anode voltage 5 kV Anode current 2A Anode dissipation 4.5kW Control-grid dissipation 5W Screen-grid dissipation 25W Typical operation Combinedamplification Vision only Frequency800 800 MHz Peak-of-sync output power 1.1 2. 2 kW Bandwidth (-1dB) 8 6 MHz Intermodulation distortion -54 - dB Gain 15.5 15.5 dB Anode voltage 4 4 kV Screen-grid voltage400 400 V Anode current (with signal) 0.8 1.5 A Anode current (at zero signal)0.5 0.5 A Control-gird currentnegligible 2 mA Screen-grid cueent 5 8 m