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Tube Interchangability Reference

The following should be direct substitutions. To prevent damage to equipment, it would be wise to double check with a good tube manual before actually doing a substitution. Tubes in the "Tube" column are directly replaceable with tubes in the "Replacement" column. The reverse will not necessarily be a correct replacement. Please report any errors.

Tube prefix selection

0 1 2 3 4 5 6 7 8 9 10 12 13-117 VT Numeric Letter

Tube	Replacement	Tube	Replacement
4AU6 4BA6 4BC5 4BC8 4BE6 4BL8 4BQ7A 4BS8 4BU8	4BA6 4AU6 4CE5 4BQ7A 4BS8 4BX8 4BZ7 4BZ8 5BK7A 4CS6 5EA8 5U8 4BC8 4BS8 4BX8 4BZ7 4BZ8 5BK7A 4BC8 4BQ7A 4BX8 4BZ7 4BZ8 5BK7A 4GS8 4HS8 4KF8	4BX8 4BZ6 4BZ7 4BZ8 4DK6 4KF8 4KN8	4BC8 4BQ7A 4BS8 4BZ7 4BZ8 5BK7A 4CB6 4DE6 4DK6 4BC8 4BQ7A 4BS8 4BX8 4BZ8 5BK7A 4BC8 4BQ7A 4BS8 4BX8 4BZ7 5BK7A 3DK6 4BU8 4GS8 4HS8 4ES8

Last update: 30 Jul. 2004