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Tube Substitutions for:
TTZ63
Type
Substitutes
Base Diagram
TTZ63
1223
,
1620
,
6J7G
,
6J7GT
,
6J7GTX
,
6J7MG
,
6W7G*
,
6J7
Notes:
* - Parallel filaments
Type
TTZ63
MECHANICAL DATA
Basing
7R
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