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Hi,
Are those 864 tubes the ones with 1.1 volt at 0.25 amp filaments ?
Ed
My local repairman, who happens to be the seller, recommended to set my ARBE to 1.5V. Supposedly the 864's were military grade for aircraft! (?) Don't know much about them except that they are known to be the best choice for performance on the III, and they share the same characteristics of the WD-11's.
05-26-2016, 04:42 AM
Hybrid Mode
