Tube Substitutions for:
X64
HEPTODE
| Type | Substitutes | Base Diagram |
|---|---|---|
| X64 | 1612, 6L7G, 6L7 |  |
| Web References | X64 (Marconi) @ Franks Electron Tubes X64 @ RadioMuseum.org | |
HEPTODE
MECHANICAL DATA
| Basing | 7T |
| Type | Substitutes | Base Diagram |
|---|---|---|
| X64 | 1612, 6L7G, 6L7 | |
| Web References | X64 (Marconi) @ Franks Electron Tubes X64 @ RadioMuseum.org | |
| Basing | 7T |