Tube Substitutions for:
HK90
Pentagrid-Converter (Heptode)
| Type | Substitutes | Base Diagram |
|---|---|---|
| HK90 | 12BE6A, 12BE6 |  |
| Web References | HK90 @ RadioMuseum.org | |
Pentagrid-Converter (Heptode)
MECHANICAL DATA
| Basing | 7CH |
| Type | Substitutes | Base Diagram |
|---|---|---|
| HK90 | 12BE6A, 12BE6 | |
| Web References | HK90 @ RadioMuseum.org | |
| Basing | 7CH |