Antique radios, Old Time Radios

HCH81

Country:	Europe		Brand:	Common type Europe
			Tube type:	Triode-Heptode Frequency converter

Tube ID = 4048


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Identical to	HCH81 = 12AJ8 = 12E4
Similar Tubes	Heater different: UCH81
First Series	1952 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)	Aug.1952 : Funkschau (FS) # 16

Base	Noval, B9A
Was used by	Radio/TV-reception etc.
Filament	-: Indirect /
Tube prices	0 Tube prices (visible for members only)


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

JR
Jacob Roschy

rtt
Michael Schlör

Manufacturer's Literature
Emilio Ciardiello

Usage in Models (calculation each 25th of the month)	3= 1952?? ; 1= 1952 ; 2= 1953? ; 1= 1954?? ; 5= 1954? ; 4= 1955?? ; 2= 1955? ; 3= 1955 ; 2= 1956?? ; 8= 1956 ; 3= 1957?? ; 5= 1957 ; 2= 1958?? ; 10= 1958 ; 5= 1959 ; 11= 1960?? ; 5= 1960 ; 1= 1963? ; 2= 1963 ; 3= 1965?? ;
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 78

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HCH81

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