Antique radios, Old Time Radios

UF9

Country:	Europe	Brand:	Common type Europe tube
		Developer:	Philips; Eindhoven (tubes international!); Netherlands
		Tube type:	Vacuum Pentode RF/IF-Stage Controlling (mu)

Tube ID = 1849

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Identical to	UF9 = MUF9
Similar Tubes	Heater different: OF9 Other base: UF21; UF5
First year	1940 Tube leaflet collection E.Erb Analysis by original leaflets (P41-1)
First Source (s)	Jan.1940 : Daten und Schaltungen moderner ... Röhren; Philips # 3
Predecessor Tubes	EF9
Successor Tubes	UF41

Base	Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Vf)
Filament	Vf 12.6 Volts / If: 0.1 Ampere / -: Indirect / -: Parallel / series AC/DC /
Tube prices	0 Tube prices (visible for members only)
Literature	Taschenbuch zum Röhren-Codex 1948/49


	UF9: Internet Miguel Angel Trujillo-Rodriguez

UF9: JR
Jacob Roschy

UF9: Telefunken Werkstattbuch
Wolfgang Bauer

UF9: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

Usage in Models	1= 1939 ; 4= 1940?? ; 1= 1940? ; 18= 1940 ; 1= 1941?? ; 10= 1941 ; 3= 1942 ; 1= 1943 ; 1= 1945? ; 4= 1945 ; 2= 1947?? ; 2= 1947 ; 2= 1948?? ; 2= 1948 ; 2= 1949 ; 1= 1950 ; 1= 1952 ; 1= 1953
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 57

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