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ID = 49256
Brand: Grammont (Radiofotos, Fotos); Paris, Malakoff
Developer: Westinghouse El. & Mfg. Co. - see also Canadian W. 
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to FY224 = 324 = 24 = 24A = UY224 = 224 = Y-224 = RENS324 = NY224 = SY224

Base UY-Base, 5 Pins (USA, April 1927) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 2.5 Volts / If 1.75 Ampere / Indirect / Specified voltage AC/DC
FY224: Ebay
Patrice Zeissloff

More ...
FY224: arrl Handbook 1972
Anonymous 10 Collector

FY224: own collection
Peter den Boer

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