Tube Substitutions for:
B309
| Type | Substitutes | Base Diagram |
|---|---|---|
| B309 | 12AT7WA, 12AT7WB, 12AZ7*, 6060, 6201, 6671, 6679, 7492, 7728, A2900, 12AT7 |  |
| Notes: | * - Parallel filaments | |
| Web References | B309 (Marconi) @ Franks Electron Tubes | |
MECHANICAL DATA
| Basing | 9A |
| Type | Substitutes | Base Diagram |
|---|---|---|
| B309 | 12AT7WA, 12AT7WB, 12AZ7*, 6060, 6201, 6671, 6679, 7492, 7728, A2900, 12AT7 | |
| Notes: | * - Parallel filaments | |
| Web References | B309 (Marconi) @ Franks Electron Tubes | |
| Basing | 9A |