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 25

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