Antique radios, Old Time Radios

H4128D

Country:	Germany		Brand:	Valvo Radioröhrenfabrik GmbH; Hamburg
			Tube type:	Vacuum Pentode RF/IF-Stage

Tube ID = 1788


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Identical to	H4128D = RENS1284 = E446
Similar Tubes	Normally replaceable-slightly different: S430N; S435N
First Series	1933 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)	Jun.1933 : Funkschau (FS)
Successor Tubes	1935 AF7

Base	Europe 5-Pin (O5A, B5) (Codex=Fco) Top contact screw type
Was used by	Radio/TV-reception etc.
Filament	Vf 4 Volts / If: 1.1 Ampere / -: Indirect /
Tube prices	2 Tube prices (visible for members only)
Literature	Taschenbuch zum Röhren-Codex 1948/49

IM
Iven Müller

Telefunken Werkstattbuch
Wolfgang Bauer

RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

Usage in Models (calculation each 25th of the month)	1= 1933?? ; 2= 1933? ; 1= 1934? ; 2= 1935 ; 1= 1936 ; 1= 1937 ;
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 8

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H4128D

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