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Boater Sam · 13th Sep 2017, 2:51 pm

Just old terminology - detector - It is probably a hang over from TRF sets to differentiate from an RF amplifier or audio amplifier as the first valve would then be the detector.

13th Sep 2017, 2:51 pm	#5
Boater Sam Banned Join Date: Dec 2013 Location: Middlewich, Cheshire, UK. & Winter in the Philippines. Posts: 3,897	Re: RCA 45X11 valve description. Just old terminology - detector - It is probably a hang over from TRF sets to differentiate from an RF amplifier or audio amplifier as the first valve would then be the detector.