Antique radios, Old Time Radios

UY21

Country:	Netherlands	Brand:	Philips; Eindhoven (tubes international!); Netherlands
		Developer:	Philips; Eindhoven (tubes international!); Netherlands
		Tube type:	Half-Wave Vacuum Rectifier

Tube ID = 629

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Identical to	UY21
Similar Tubes	Other base: UY11; UY1N; UY3
First year	Feb.1941 Tube leaflet collection E.Erb Analysis by original leaflets (P11)
First Source (s)	May.1941 : Radio-Mentor 1941 # 5 1941 : Philips-Buch III = 1941
Predecessor Tubes	CY1 UY1 UY1N CY21_9pin
Successor Tubes	UY41

Base	Loctal-8, B8G (Sylvania, 1938) (Codex=Wa)
Filament	Vf 50 Volts / If: 0.1 Ampere / -: Indirect / -: Series, AC/DC /
Tube prices	1 Tube prices (visible for members only)
Literature	Taschenbuch zum Röhren-Codex 1948/49


	UY21: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse Karel De Reus †

UY21: scc
Christian Schaufelberger

Variants

UY21: rtt
Michael Schlör

UY21: Miniwatt Monatshefte
Anonymous 225 Collector

Usage in Models	1= 1941?? ; 5= 1941? ; 40= 1941 ; 3= 1942?? ; 21= 1942 ; 2= 1943? ; 16= 1943 ; 12= 1944 ; 1= 1945?? ; 3= 1945? ; 9= 1945 ; 1= 1946?? ; 7= 1946 ; 2= 1947? ; 7= 1947 ; 10= 1948 ; 14= 1949 ; 1= 1950?? ; 1= 1950? ; 2= 1950 ; 3= 1951 ; 1= 1952 ; 2= 1953 ; 1= 1954?? ; 1= 1955?? ; 1= 1958?
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 167

Variants

Sammlung
Wolfgang Bauer

UY21*tip

UCH21 w/ tip, only made by Siemens Austria

23.Feb.2009

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