Antique radios, Old Time Radios

UBL21

Country:	Europe	Brand:	Common type Europe
		Developer:	Philips; - Eindhoven; Netherlands
		Tube type:	Double Diode-Pentode Power/Output

Tube ID = 287


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Identical to	UBL21 = UBL71
Similar Tubes	Other base and data slightly different: UBL1; UBL3 Multiple differences or of other kind: CABL21
First Series	Feb.1941 Tube leaflet collection E.Erb Analysis by original leaflets (P11)
First Source (s)	May.1941 : Radio-Mentor # 5 Feb.1941 : Philips-Buch III
Predecessor Tubes	CBL1 UBL1 CBL6 CABL21

Base	Loctal-8, B8G (Sylvania, 1938) (Codex=Wa)
Was used by	Radio/TV-reception etc.
Filament	Vf 55 Volts / If: 0.1 Ampere / -: Indirect / -: Series, AC/DC /
Tube prices	4 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

My Collection
Danko Tkalec

Variants

Lorenz Empfänger-Röhren , 9. Auflage
Michael Sigmund

Mullard - original papers
Wolfgang Romeyke

Usage in Models (calculation each 25th of the month)

5= 1941?? ; 7= 1941? ; 49= 1941 ; 3= 1942?? ; 1= 1942? ; 40= 1942 ; 2= 1943?? ; 4= 1943? ; 30= 1943 ; 2= 1944? ; 41= 1944 ; 1= 1945?? ; 7= 1945? ; 18= 1945 ; 3= 1946?? ; 3= 1946? ; 34= 1946 ; 4= 1947? ; 27= 1947 ; 5= 1948?? ; 5= 1948? ; 44= 1948 ; 4= 1949? ; 54= 1949 ; 5= 1950?? ; 4= 1950? ; 30= 1950 ; 1= 1951?? ; 2= 1951? ; 20= 1951 ; 1= 1952?? ; 24= 1952 ; 3= 1953?? ; 2= 1953? ; 11= 1953 ; 1= 1954?? ;

Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 526

Variants
collection JR Jacob Roschy	UBL21*Pumpstutzen oben Vermutlich von Siemens Austria. 23.Feb.2009

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UBL21

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UBL21

Variants

UBL21*Pumpstutzen oben

UBL21