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Tube Substitutions for:
4KF8
Double Pentode
Type
Substitutes
Base Diagram
4KF8
4BU8
,
4GS8
,
4HS8
,
4MK8
Web References
4KF8 @ RadioMuseum.org
Type
4KF8
Double Pentode
MECHANICAL DATA
Basing
9FG
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