Antique radios, Old Time Radios

1C7

Country:	United States of America (USA)		Brand:	Common type USA
			Tube type:	HEPTODE Controlling (mu)

Tube ID = 3949


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Identical to	1C7

Base	Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Ut)
Filament	Vf 2 Volts / If: 0.12 Ampere /
Literature	Taschenbuch zum Röhren-Codex 1948/49


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

Telefunken Werkstattbuch
Wolfgang Bauer

Grundig Rö-Tabu, zum M1, Band 3, 1948
Anonymous 15 Collector

Usage in Models (calculation each 25th of the month)	3= 1937? ; 4= 1937 ; 1= 1938 ; 1= 1939 ; 2= 1940?? ; 2= 1948 ;
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 13

No further Information for

1C7

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