Tube Substitutions for:
7D7
Triode-Heptode
| Type | Substitutes | Base Diagram |
|---|---|---|
| 7D7 |  | |
| Web References | 7D7 (Sylvania) @ Franks Electron Tubes 7D7 @ RadioMuseum.org | |
Triode-Heptode
MECHANICAL DATA
| Basing | 8AR |
| Type | Substitutes | Base Diagram |
|---|---|---|
| 7D7 | | |
| Web References | 7D7 (Sylvania) @ Franks Electron Tubes 7D7 @ RadioMuseum.org | |
| Basing | 8AR |