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	Heater different: 1H33; 1R5T; 400A_WE; 400B_WE Other base: 1R5_Loktal; VT-171A
First Series	1940 Tube leaflet collection E.Erb Analysis by original leaflets
Predecessor Tubes	1A7G 1LA6

Base	Miniatur-7-Pin-Base B7G, USA 1940
Was used by	Radio/TV-reception etc.
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


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

Röhrensammlung
Wolfgang Bauer

Telefunken Werkstattbuch
Wolfgang Bauer

Brimar Manual No. 7
Daniel Consales

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

1= 1940?? ; 1= 1940? ; 10= 1940 ; 9= 1941?? ; 6= 1941? ; 26= 1941 ; 3= 1942?? ; 7= 1942? ; 13= 1942 ; 1= 1943?? ; 2= 1943? ; 2= 1945?? ; 1= 1945 ; 2= 1946?? ; 2= 1946? ; 50= 1946 ; 3= 1947?? ; 11= 1947? ; 83= 1947 ; 6= 1948?? ; 9= 1948? ; 118= 1948 ; 8= 1949?? ; 7= 1949? ; 92= 1949 ; 43= 1950?? ; 24= 1950? ; 93= 1950 ; 30= 1951?? ; 10= 1951? ; 70= 1951 ; 25= 1952?? ; 27= 1952? ; 72= 1952 ; 6= 1953?? ; 48= 1953? ;

Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 1530

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1R5

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