EF 22, Tube EF22; Röhre EF 22 (EF22)

Antique radios, Old Time Radios

EF22

Country:	Netherlands	Brand:	Philips; - Eindhoven; Netherlands
		Developer:	Philips; - Eindhoven; Netherlands
		Tube type:	PENTODE RF/IF-Stage Controlling (mu)

Tube ID = 1870


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Identical to	EF22 = W143 = CV303
Similar Tubes	EF9 (other base) EF41 (other base) EF21_9pin (other base)
First Series	Feb.1941 Tube leaflet collection E.Erb Philips Book III [178]
First Source (s)	Feb.1941 : Daten und Schaltungen moderner ... Röhren; Philips # 3 Jul.1941 : Radio-Mentor # 7
Predecessor Tubes	EF9 EF21_9pin
Successor Tubes	1947 EF41

Base	Loctal-8, B8G (Sylvania, 1938) (Codex=Waa)
Was used by	Radio/TV-reception etc.
Filament	-: Indirect / -: Parallel / series AC/DC / If: 0.2 Ampere / Vf 6.3 Volts /
Tube prices	2 Tube prices (visible for members only)
Literature	Taschenbuch zum Röhren-Codex 1948/49


	Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse Karel De Reus

M.N.
Anonymous 124 Collector

Variants

RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

Usage in Models

1= 1940 ; 27= 1941 ; 1= 1942?? ; 3= 1942? ; 34= 1942 ; 40= 1943 ; 5= 1944? ; 53= 1944 ; 9= 1945? ; 19= 1945 ; 5= 1946?? ; 2= 1946? ; 41= 1946 ; 1= 1947?? ; 1= 1947? ; 40= 1947 ; 3= 1948?? ; 5= 1948? ; 54= 1948 ; 1= 1949?? ; 3= 1949? ; 36= 1949 ; 4= 1950?? ; 2= 1950? ; 23= 1950 ; 1= 1951?? ; 4= 1951? ; 15= 1951 ; 2= 1952?? ; 2= 1952? ; 7= 1952 ; 5= 1953 ; 1= 1954? ; 2= 1954 ; 2= 1955?? ; 1= 1955? ;

Number of Models with this tube 480

Variants
	EF22*Low profile Low profile military version. 14.May.2006 Gabriel Toth

No further Information for

EF22

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Variants

EF22*Low profile

EF22