Tube Substitutions for:
1223
Pentode Amplifier
| Type | Substitutes | Base Diagram |
|---|---|---|
| 1223 | 6J7, 1620, 7000 |  |
| Web References | 1223 (Sylvania) @ Franks Electron Tubes 1223 @ RadioMuseum.org | |
Pentode Amplifier
MECHANICAL DATA
| Basing | 7R |
ELECTRICAL DATA
HEATER CHARACTERISTICS
| Heater Voltage | 6.3 | Volts |
| Heater Current | 0.3 | A |