Tube question

[grumpy]

Is there a Subsitute for the KT66 ? Also my testers chart does not list the KT66. If there is a sub can its settings be used for testing the 66 ? Any help would be great.

Grumpy

 

[Thatch_Ear]

5881 or a 6L6GC Grumps. The old coke bottle type 6L6 will not take the voltage.

 

[grumpy]

Thatch

These are direct replacements ? Also can the KT66 be tested at the 5881 or 6L6GC settings on the tester. Thanks !

Grumpy