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Tube Substitutions for:
KF4
Vacuum Pentode
Type
Substitutes
Base Diagram
KF4
2B4_Ultron, TKF4, BHP61, BF42, S210
Web References
KF4 (Philips) @ Franks Electron Tubes?
KF4 (Philips) @ Franks Electron Tubes?
KF4 (Philips) @ Franks Electron Tubes?
KF4 @ Radiomuseum
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