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National/Richardson

G -

AFAIK, National marketed two type of tubes rebranded as 5AR4's. The first is a Russian type, reportedly a 5Z4. They won't stand up as 5AR4's.

Ironically, the second is actually a Bendix 6106. It is a poor substitute for a 5AR4 - but is a fantastic tube within its ratings (really an indirectly heated 5Y3GT). They have a light tan base (?micanol) and the typical Bendix "center post" cathode.



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  • National/Richardson - Gary Kaufman 08/31/0408:41:27 08/31/04 (0)


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