1928 - The General Radio Experimenter - UX-250 Oct 20 Written By Iain Factors Concerning the Use of the Type UX 250 Power Amplifier Tube I like the codewords but FATTY is my favorite. 50 triodeux-250 Iain
1928 - The General Radio Experimenter - UX-250 Oct 20 Written By Iain Factors Concerning the Use of the Type UX 250 Power Amplifier Tube I like the codewords but FATTY is my favorite. 50 triodeux-250 Iain