Vacuum Tube - 17DQ6B / 17GW6, Beam Power Amplifier
New-Old-Stock (NOS) tube.
The 17DQ6B is a beam power pentode primarily designed for use as the horizontal-deflected amplifier in television receivers. Its high zero-bias plate current at low plate and screen voltages makes the tube well-suited for use in receivers that operate at low plate-supply voltages. Except for heater ratings and heater warm-up time, the 17DQ6B is identical to the 6BQ6B.