Tube Substitutions for:
XXFM
Duo Diode - Triode
| Type | Substitutes | Base Diagram |
|---|---|---|
| XXFM | 7X7 |  |
| Web References | XXFM @ RadioMuseum.org | |
Duo Diode - Triode
MECHANICAL DATA
| Basing | 8BZ |
ELECTRICAL DATA
HEATER CHARACTERISTICS
| Heater Voltage | 6.3 | Volts |
| Heater Current | 0.3 | A |