- Base
- Refer to variations
- Socket code
- B9A
- Sections
- 1
- Heater
- 19 V / 100 mA
- Plate
- 250 V / 0.2 W
- Ik max
- 10 mA
B9A - Small-button Noval 9-contact
Series-heater fluorescent tuning indicator designed for AM receivers, providing visible tuning accuracy and received-signal indication.