The 6DQ6A is a high-perveance beam power pentode for horizontal deflection. Skirted miniature glass bulb with top-cap connection for plate (JEDEC cap C1-2 or C1-3).
Horizontal deflection amplifier max ratings: plate supply 770V DC (boost+DC), plate dissipation 18W, grid #2 voltage 220V DC, grid #2 dissipation 5.6W.
Average characteristics at Eb=250V, Ec2=150V, Ec1=-22.5V: Ia=55mA, Ig2=1.5mA, gm=6600 umhos, Rp=20kΩ.