0G3
The OG3 (European equivalent 85A2) is an 85 V voltage reference tube with a miniature B7G 7-pin base.
It is used in the 132 and 506, among others.
Pictures
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OG3 inside a 547
The OG3 (European equivalent 85A2) is an 85 V voltage reference tube with a miniature B7G 7-pin base.
It is used in the 132 and 506, among others.
OG3 inside a 547