Tube Substitutions for:
OF1
Vacuum Pentode
| Type | Substitutes | Base Diagram |
|---|---|---|
| OF1 | 6K7*, 6K7G*, 6K7GT*, 6K7GTX*, 6S7G, 6S7 |  |
| Notes: | * - Parallel filaments | |
| Web References | OF1 @ RadioMuseum.org | |
Vacuum Pentode
MECHANICAL DATA
| Basing | 7R |
| Type | Substitutes | Base Diagram |
|---|---|---|
| OF1 | 6K7*, 6K7G*, 6K7GT*, 6K7GTX*, 6S7G, 6S7 | |
| Notes: | * - Parallel filaments | |
| Web References | OF1 @ RadioMuseum.org | |
| Basing | 7R |