6939

The 6939  (European: QQE02/5, QQV02/6) is a dual tetrode vacuum tube (Q_A 2 × 3 W) designed for push-pull RF amplifier power stages.

The 7699 is similar.

Links

• radiomuseum.org: 6939 / QQE02/5 / QQV02/6
• Datasheet

Used in

• 581/585 early models - final vertical output stage