Tube Substitutions for:
1FD9
Diode RF Pentode
| Type | Substitutes | Base Diagram |
|---|---|---|
| 1FD9 | 1AF5*, 1AH5*, 1AR5*, 1S5 |  |
| Notes: | * - Parallel filaments | |
| Web References | 1FD9 (Mazda) @ Franks Electron Tubes 1FD9 @ RadioMuseum.org | |
Diode RF Pentode
MECHANICAL DATA
| Basing | 6AU |
ELECTRICAL DATA
HEATER CHARACTERISTICS
| Heater Voltage | 1.4 | Volts |
| Heater Current | 0.05 | A |