Tube Substitutions for:
21HB5
Beam Power Tube
| Type | Substitutes | Base Diagram |
|---|---|---|
| 21HB5 | 21HB5A |  |
| Web References | 21HB5 (Tung-Sol) @ Franks Electron Tubes 21HB5 @ RadioMuseum.org | |
Beam Power Tube
MECHANICAL DATA
| Basing | 12BJ |
| Type | Substitutes | Base Diagram |
|---|---|---|
| 21HB5 | 21HB5A | |
| Web References | 21HB5 (Tung-Sol) @ Franks Electron Tubes 21HB5 @ RadioMuseum.org | |
| Basing | 12BJ |