RF22

Country:	United States of America (USA)		Brand:	CeCo; C.E.; Providence (RI)
			Tube type:	Screen-grid Tetrode RF/IF-Stage

Tube ID = 12927


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Identical to	RF22 = 22
Similar Tubes	Normally replaceable-slightly different: UX222
First Source (s)	May.1928 : Saga of the Vacuumtube, Tyne p.344

Base	UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bu) Top contact with a cap
Was used by	Radio/TV-reception etc.
Filament	Vf 3 Volts / If: 0.13 Ampere / -: Direct / -: Battery = /
Literature	Taschenbuch zum Röhren-Codex 1948/49

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RF22

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