Antique radios, Old Time Radios

EF22

ID = 1870

Country:

Netherlands

Brand:	Philips; Eindhoven (tubes international!); Miniwatt Philips; Eindhoven (tubes international!); Miniwatt Albis, Albiswerke AG (Siemens Switzerland AG / Telefunken Zürich AG / Siemens-Albis); Albisrieden
Developer:	Philips; Eindhoven (tubes international!); Miniwatt
Tube type:	Vacuum Pentode RF/IF-Stage Controlling (mu)

Identical to

EF22 = W143 = CV303 = 6H2 = 6F22_Sweden

Similar Tubes

Other base:

EF21_9pin ; EF41 ; EF9

First year

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 EF22_9pin

Successor Tubes

1947 EF41

Base	Loctal-8, B8G (Sylvania, 1938) (Codex=Waa)
Was used by	Radio/TV-reception etc.
Filament	Vf 6.3 Volts / If 0.2 Ampere / Indirect / Parallel / series AC/DC
Description	The Philips 21- "Key Base" tubes were initially designed in 1940 with the 9-pin base B9G like the EF50. The later series production from 1942 on however was changed to the 8-pin Locktal-base B8G designed by Sylvania.
Tube prices	29 Tube prices (visible for members only)
Literature	- - Manufacturers Literature 1940 Philips Bulletin Juli 1941 Taschenbuch zum Röhren-Codex 1948/49


	EF22: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse Karel De Reus †

EF22: My tubes
Anonymous 413 Collector

EF22: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

Usage in Models

2= 1941?? ; 29= 1941 ; 1= 1942?? ; 3= 1942? ; 36= 1942 ; 1= 1943? ; 42= 1943 ; 1= 1944?? ; 6= 1944? ; 51= 1944 ; 13= 1945? ; 21= 1945 ; 9= 1946?? ; 7= 1946? ; 45= 1946 ; 1= 1947?? ; 4= 1947? ; 50= 1947 ; 6= 1948?? ; 15= 1948? ; 67= 1948 ; 2= 1949?? ; 5= 1949? ; 40= 1949 ; 6= 1950?? ; 5= 1950? ; 30= 1950 ; 2= 1951?? ; 4= 1951? ; 16= 1951 ; 2= 1952?? ; 3= 1952? ; 10= 1952 ; 3= 1953 ; 2= 1954? ; 4= 1954 ; 6= 1955?? ; 2= 1955? ; 12= 1955 ; 1= 1956?? ; 1= 1956? ; 7= 1956 ; 3= 1957?? ; 3= 1957? ; 5= 1957 ; 3= 1958?? ; 3= 1958 ; 4= 1960?? ; 1= 1960 ; 1= 1962 ; 1= 1965?? ; 1= 1970?? ; 1= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):599

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EF22

Philips; Eindhoven (tubes international!); Miniwatt