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» Vacuum tubes by use » HAM Radio tubes » GU-17 / QQE03/12 / CV2798 double beam tetrode tube
GU-17 / QQE03/12 / CV2798 double beam tetrode tube
Manufacturer: Ulyanovsk factory
GU-17 / QQE03/12 / CV2798 double beam tetrode tube
$2.50/ea
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Average delivery time to United States is 19 days.
The GU-17 beam-power double tetrode is used for generation of power amplification at frequencies up to 250mHz in RF equipment. Equivalent to the QQE03/12, CV2798.

GENERAL

  • Cathode: indirectly heated, oxide coated.
  • Envelope: glass, miniature.
  • Height: at most 80mm.
  • Diameter: at most 22.5mm.
  • Mass: at most 25g.

    OPERATING ENVIRONMENTAL CONDITIONS

  • Vibration loads: frequencies 20-600Hz, acceleration 59m/s^2.
  • Multiple impacts with acceleration: 118m/s^2.
  • Single impacts with acceleration: 490m/s^2.
  • Linear loads with acceleration: 294m/s^2.
  • Relative humidity at up to +40C: 98%.

    BASIC DATA
    Electrical Parameters

  • Heater voltage: 6.3V.
  • Heater current: 0.72-0.88A.
  • Mutual conductance (at anode and grid 2 voltages 200V,
    grid 1 voltage -16V of first tetrode,
    grid 1 voltage -100V of 2nd tetrode): 1.6-3.3mA/V.
  • Anode current (at anode and grid 2 voltage 200V,
    grid 1 voltage -16V of 1 st tetrode,
    grid 1 voltage -100V of 2nd tetrode): 10-30mA.
  • Interelectrode capacitance: input 5.2-7.8pF, output 2.2-3.2pF, transfer, at most 0.1s.
  • Warm up time, at most 40s.
  • Output power (at anode voltage 300V, grid 2 voltage 200V, voltage - 80V of grids 1), at least 11W.
  • Output power over 400 h of service, at least 8.8W.

    Limit Operating Values

  • Healer voltage:
    with parallel-connected heater 5.7-7V,
    with series-connected heater 11-14V.
  • Anode voltage: 400V.
  • Anode voltage at the instant of switching on: 450V.
  • Voltage between cathode and heater: -150V to +150V.
  • Cathode current: 100mA.
  • Dissipation: anodes 12W, grid 2 3W, grid 1 0.5W.
  • Operating frequency: 250mHz;
  • Envelope temperature: 260C.
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