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The 6064 is a special quality version of the EF91. The special quality valve has a more rugged build than the commercial EF91.
On the side of the envelope is this label, one assumes as a mark of the special quality build.
The thin glass tube envelope is 17 mm in diameter and, excluding the B7G base pins, is 46 mm tall.
Pin Connections
On the side of the envelope is this label, one assumes as a mark of the special quality build.
The thin glass tube envelope is 17 mm in diameter and, excluding the B7G base pins, is 46 mm tall.
Pin Connections
The thin glass tube envelope is 17 mm in diameter and, excluding the B7G base pins, is 46 mm tall.
Pin Connections
Pin Connections
