Tube Substitutions for:
3B7/1291
High Frequency Twin Triode
| Type | Substitutes | Base Diagram |
|---|---|---|
| 3B7/1291 | 3B7, 1291 |  |
High Frequency Twin Triode
MECHANICAL DATA
| Basing | 7BE |
ELECTRICAL DATA
HEATER CHARACTERISTICS
| Heater Voltage | 2.8/1.4 | Volts |
| Heater Current | 0.11/0.22 | A |