Antique radios, Old Time Radios

1R5

Country:	Worldwide		Brand:	Common type Worldwide
			Tube type:	Pentagrid-Converter (Heptode) Frequency converter Controlling (mu)

Tube ID = 428

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Identical to	1R5 = DK91 = 1a1p = VT-171 = X17 = 1A2_1R5
Similar Tubes	Other class quality (otherwise equal): CV782 Heater different: 1H33; 1R5T; 400A_WE; 400B_WE Other base: 1R5_Loktal; VT-171A
First year	1940 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)	13.Nov.1939 : Tube Lore, Sibley, USA 1996
Predecessor Tubes	1A7G 1LA6

Base	Miniatur-7-Pin-Base B7G, USA 1940
Filament	Vf 1.4 Volts / If: 0.05 Ampere / -: Direct / -: Battery = /
Description	Typ Va=90, Ia=1.6mA, gc=0.3. (Ferranti Literature)
Tube prices	1 Tube prices (visible for members only)
Literature	Essential Characteristics, GE 1973 Taschenbuch zum Röhren-Codex 1948/49 - - Manufacturers Literature


	1R5: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse Karel De Reus †

1R5: Röhrensammlung
Wolfgang Bauer

1R5: Telefunken Werkstattbuch
Wolfgang Bauer

1R5: Brimar Manual No. 7
Daniel Consales

Usage in Models

1= 1940?? ; 2= 1940? ; 21= 1940 ; 7= 1941?? ; 11= 1941? ; 33= 1941 ; 3= 1942?? ; 9= 1942? ; 15= 1942 ; 1= 1943?? ; 3= 1943? ; 1= 1943 ; 1= 1944? ; 2= 1945?? ; 4= 1945 ; 2= 1946?? ; 8= 1946? ; 70= 1946 ; 4= 1947?? ; 14= 1947? ; 146= 1947 ; 7= 1948?? ; 18= 1948? ; 190= 1948 ; 16= 1949?? ; 7= 1949? ; 159= 1949 ; 56= 1950?? ; 24= 1950? ; 124= 1950 ; 33= 1951?? ; 13= 1951? ; 108= 1951 ; 28= 1952?? ; 31= 1952? ; 105= 1952 ; 7= 1953?? ; 55= 1953? ; 107= 1953 ; 11= 1954?? ; 74= 1954? ; 111= 1954 ; 27= 1955?? ; 82= 1955? ; 78= 1955 ; 2= 1956?? ; 69= 1956? ; 46= 1956 ; 2= 1957?? ; 47= 1957? ; 10= 1957 ; 7= 1958?? ; 2= 1958? ; 16= 1958 ; 2= 1959?? ; 4= 1959? ; 44= 1959 ; 4= 1960?? ; 7= 1960 ; 1= 1961 ; 1= 1962?? ; 1= 1969?? ; 1= 9999

Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 2095

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