1925 : British Radio Valves - The Classic Years: 1926-1946 supplement, p. 17
Culot
UV-Base (4 Pins+Bayonet, USA 1914 WE)
Utilisé par
Radio/TV-reception etc.
Chauffage
Vf 5 Volt / If 0.25 Ampère / Direct
Description
This tube is identical to the CT201A made by the parent company in the USA and is probably an import from them. The tube box is clearly marked Cleartron London and Birmingham.
Dimensions (l x h x p) incl.pins/tip
x x 45 mm / x x 1.77 inch
Bibliographie
-- Collector info (Sammler) Banneitz, TB der drahtl. Telephonie u.Telegr. 1927
Wireless World (The), London (WW, 79) Cleartron Advertisement: September 1925
