Tube Substitutions for:
1644
Twin Pentode Power Amplifier
| Type | Substitutes | Base Diagram |
|---|---|---|
| 1644 | 12L8GT |  |
| Web References | 1644 (RCA (HB3)) @ Franks Electron Tubes 1644 @ RadioMuseum.org | |
Twin Pentode Power Amplifier
MECHANICAL DATA
| Basing | 8BU |
ELECTRICAL DATA
HEATER CHARACTERISTICS
| Heater Voltage | 12.6 | Volts |
| Heater Current | 0.15 | A |