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G8HQP Dave · 12th Oct 2019, 10:39 am

Maybe the taller version allowed use of the same envelope as other B7G valves, which might ease both stock control and production line settings. However, set against this idea were other small envelope valves such as EF95/6AK5 and other 'UHF' valves.

Does the EAA91 have the electrodes set nearer the base, so shorter connections and better high frequency performance?

12th Oct 2019, 10:39 am	#4
G8HQP Dave Rest in Peace Join Date: Sep 2008 Location: Solihull, West Midlands, UK. Posts: 4,872	Re: Why Both EAA91 and EB91? Maybe the taller version allowed use of the same envelope as other B7G valves, which might ease both stock control and production line settings. However, set against this idea were other small envelope valves such as EF95/6AK5 and other 'UHF' valves. Does the EAA91 have the electrodes set nearer the base, so shorter connections and better high frequency performance?