Tube Substitutions for:
4R-HH2
| Type | Substitutes | Base Diagram |
|---|---|---|
| 4R-HH2 | 4BC8, 4BQ7A, 4BX8, 4BZ7, 4BZ8, 5BK7A, 4BS8 |  |
| Web References | 4R-HH2 (Hitachi) @ Franks Electron Tubes | |
MECHANICAL DATA
| Basing | 9AJ |
| Type | Substitutes | Base Diagram |
|---|---|---|
| 4R-HH2 | 4BC8, 4BQ7A, 4BX8, 4BZ7, 4BZ8, 5BK7A, 4BS8 | |
| Web References | 4R-HH2 (Hitachi) @ Franks Electron Tubes | |
| Basing | 9AJ |