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ID = 65148
United States of America (USA)
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to 222AC = 124 = UY224 = C324 = AC22 = 122AC

Base UY-Base, 5 Pins (USA, April 1927)
Was used by Radio/TV-reception etc.
Filament Vf 2.25 Volts / If 1.75 Ampere / Indirect / Specified voltage AC/DC

This tube is the fore-runner of the UY224 and was made by a few manufacturers such as Arcturus (122AC), Ceco and Eveready Raytheon AC22, Sonatron, Songbird (made for Montgomery Ward) and Sylvania 222AC. These tubes were available for only a very few months - April to July, in 1929, when the type number was discontinued for these.

Dimensions (WHD)
incl. pins / tip
x 123 x 45 mm / x 4.84 x 1.77 inch
Weight 50 g / 1.76 oz
Information source - - Manufacturers Literature   
-- Collector info (Sammler)   
222AC: Fin Stewart
Fin Stewart

222AC: own collection
Peter den Boer

from Just Qvigstad

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