Tube Substitutions for:
3Q4
Beam Power Amplifier
| Type | Substitutes | Base Diagram |
|---|---|---|
| 3Q4 | 3W4*§, 3A4, 3Z4, 3S4§, 3S4SF*§, 3Z4*§ |  |
| Notes: | * - Parallel filaments § - May not work in all circuits | |
| Web References | 3Q4 (Mazda-Belvu) @ Franks Electron Tubes 3Q4 (Tung-Sol) @ Franks Electron Tubes 3Q4 (Sylvania) @ Franks Electron Tubes 3Q4 (Brimar) @ Franks Electron Tubes 3Q4 @ RadioMuseum.org | |
Beam Power Amplifier
MECHANICAL DATA
| Basing | 7BA |
ELECTRICAL DATA
HEATER CHARACTERISTICS
| Heater Voltage | 2.8/1.4 | Volts |
| Heater Current | 0.05/0.10 | A |