| Type | Substitutes | Base Diagram |
|---|---|---|
| EF42 | HF62, Z150 | |
| Web References | EF42 (Mazda-Belvu) @ Franks Electron Tubes? EF42 (Philips) @ Franks Electron Tubes? EF42 (Philips) @ Franks Electron Tubes? EF42 (La Radiotechnique) @ Franks Electron Tubes? EF42 @ Radiomuseum | |