Antique radios, Old Time Radios

5Z4G

Country:	Worldwide		Brand:	Common type Worldwide
			Tube type:	Full-Wave Vacuum Rectifier Power-supply

Tube ID = 3304

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Identical to	5Z4G = GZ30
Similar Tubes	Other shape (e.g. bulb type): 5Z4 Normally replaceable-slightly different: 5Z4P Different connections: 5Y4S Other base: 80K Other base and data slightly different: 80S
Predecessor Tubes	80S

Base	Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Vn)
Filament	Vf 5 Volts / If: 2 Ampere / -: Half indirect /
Tube prices	0 Tube prices (visible for members only)
Literature	Taschenbuch zum Röhren-Codex 1948/49

5Z4G: Patrice ZEISSLOFF
Patrice Zeissloff

5Z4G: Telefunken Werkstattbuch
Wolfgang Bauer

5Z4G: Brimar Manual
Heinz Höger

Usage in Models

1= 1936 ; 1= 1937? ; 10= 1937 ; 1= 1938? ; 63= 1938 ; 61= 1939 ; 3= 1940? ; 17= 1940 ; 23= 1941 ; 1= 1942?? ; 1= 1943 ; 5= 1945 ; 1= 1946?? ; 2= 1946? ; 7= 1946 ; 1= 1947?? ; 17= 1947 ; 3= 1948 ; 2= 1949? ; 3= 1949 ; 1= 1950?? ; 2= 1950? ; 12= 1950 ; 1= 1951?? ; 8= 1951 ; 2= 1952? ; 4= 1952 ; 5= 1953 ; 1= 1954? ; 2= 1954 ; 6= 1955 ; 3= 1956 ; 1= 1957? ; 1= 1957 ; 1= 1960 ; 3= 1961 ; 1= 1962? ; 2= 1962 ; 1= 1963 ; 1= 1964 ; 1= 1965?? ; 1= 1965 ; 1= 1969 ; 1= 1975??

Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 285

Forum contributions about this tube
5Z4G
Threads: 1 | Posts: 1

Hits: 780 Replies: 0

5Z4G Supplied as 5V4G

Roy Johnson
09.Jul.08

5Z4G Supplied as 5V4G

Some specimens of 5Z4G manufactured by STC/Brimar in the UK are actually 5V4G tubes. These bear the manufacturing code "133".

It is suggested that it was more economical to cease production of the lower-rated 5Z4G and supply the 5V4G design. However both tube types were offered at the same price by Brimar from at least 1947 (when the designs were different) through to the end of production.

The Ferranti-badged specimen of 5Z4G shown in the museum HERE is of the 5V4G STC construction with the winged anodes with 4 holes in each wing.

This is just one example of manufacturers marketing the same item under different labels.

Best regards,

Roy

5Z4G
End of forum contributions about this tube

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