Antique radios, Old Time Radios

6a7

Country:	Soviet Union		Brand:	Common production USSR (Soviet Union)
			Tube type:	Pentagrid-Converter (Heptode) Pentagrid (new)

Tube ID = 18796


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Identical to	6a7 = 6SA7 = 6a15b
Similar Tubes	Other shape (e.g. bulb type): 6A7_DDR; 6a10s; OSW3104 Normally replaceable-slightly different: 3104_OSW
Predecessor Tubes	6a8

Base	Octal (Int.Octal, IO) K8A, USA 1935
Was used by	Radio/TV-reception etc.
Filament	Vf 6.3 Volts / If: 0.3 Ampere / -: Indirect / -: Parallel / series AC/DC /
Tube prices	0 Tube prices (visible for members only)

collection JR
Jacob Roschy

ARRL Handbook 1972
Michael Schlör

Usage in Models (calculation each 25th of the month)	1= 1938? ; 2= 1945 ; 2= 1946? ; 4= 1946 ; 1= 1947? ; 5= 1947 ; 1= 1948?? ; 5= 1948 ; 4= 1949? ; 7= 1949 ; 2= 1950? ; 6= 1950 ; 1= 1951? ; 3= 1951 ; 2= 1952? ; 11= 1952 ; 11= 1953 ; 13= 1954 ; 3= 1955? ; 8= 1955 ; 3= 1957 ; 1= 1958?? ; 1= 1958 ; 2= 1960 ; 2= 1961 ;
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 101

Further Information for

6a7

6a7 (6a7) (23.04.2009) Enrico Bonisolo	Clicks: 179 Replies: 0
This soviet 6A7 is not identical to the standard worldwide known 6A7 (USA) . The usual 6A7 is also a heptode converter elctrically very close to this but very older, bigger (st shaped) AND with a different socket: it is not octal but the older late 20's - early 30's style 7 pin USA socket. This USSR tube seems to be just identical or very close to 6SA7, single ended octal heptode used in 1940.

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