Tube Substitutions for:
20A3
| Type | Substitutes | Base Diagram |
|---|---|---|
| 20A3 | 2D21W, 2D21 |  |
| Web References | 20A3 (AEI) @ Franks Electron Tubes 20A3 (Mazda) @ Franks Electron Tubes | |
MECHANICAL DATA
| Basing | 7BN |
| Type | Substitutes | Base Diagram |
|---|---|---|
| 20A3 | 2D21W, 2D21 | |
| Web References | 20A3 (AEI) @ Franks Electron Tubes 20A3 (Mazda) @ Franks Electron Tubes | |
| Basing | 7BN |