Contradiction : The Sparton Tubes table in Rider's Sparks-Withington, p.2-60 lists a filament voltage of 3 Volts, but also a supply from 6 V storage battery! This tube is made by Arcturus for Sparton/Cardon. The Arcturus type number is A-486.
Abmessungen (BHT) inkl. Stifte/Spitzli
x 110 x 45 mm / x 4.33 x 1.77 inch
Gewicht
50 g / 1.76 oz
Literatur
Rider's Perpetual, Volume 2 = 1932 and before Sparks-Withington, p.2-60
Tube Lore (II) p. 35
-- Collector info (Sammler)
