Tube Substitutions for:
7B8
Pentagrid Converter
| Type | Substitutes | Base Diagram |
|---|---|---|
| 7B8 | 7A8, 7B8LM, 7A8* |  |
| Notes: | * - Parallel filaments | |
| Web References | 7B8 (Sylvania) @ Franks Electron Tubes 7B8 (Sylvania) @ Franks Electron Tubes 7B8 (Tung-Sol) @ Franks Electron Tubes 7B8 (Raytheon) @ Franks Electron Tubes 7B8 @ RadioMuseum.org | |
Pentagrid Converter
MECHANICAL DATA
| Basing | 8X |
ELECTRICAL DATA
HEATER CHARACTERISTICS
| Heater Voltage | 6.3 | Volts |
| Heater Current | 0.3 | A |