Antique radios, Old Time Radios

REN904

Country:	Germany		Brand:	Telefunken Deutschland (TFK)
			Tube type:	Triode, vacuum Universal

Tube ID = 499


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Identical to	REN904 = 41MHF = RV4100 = 354V = MH4 = DW4011 = RS4324 = TL425 = A4110 = AG495 = A430N = TE24 = 70504 = E428 = WG43 = D4 = ND4_Orion = 904 = 105 = E424N = A4D1 = NU41 = WE27 = CI424 = LA203
Similar Tubes	Normally replaceable-slightly different: 4A120; 4C2_5pin; 4C3; E424; K1694; KL70503; KL70504; WG42 Other characteristic (electr. data): AR4101 Heater different: REN1821 Other base: AG495_4pin Multiple differences or of other kind: VT132_TKD
First Series	1930 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)	Apr.1930 : -- Original-techn. papers. ÖRA Folge 4 1930 : Katalog Prohaska 1930/31 (dick)
Predecessor Tubes	REN1004 REN1104 REN804
Successor Tubes	1935 AC2

Base	Europe 5-Pin (O5A, B5) (Codex=F)
Was used by	Radio/TV-reception etc.
Filament	Vf 4 Volts / If: 1 Ampere / -: Indirect / -: Parallel, (AC/DC) /
Description	Im Prohaska-Katalog 1930/31 wird sie erstmals angeboten. Als Ersatz für REN1004 und REN1104 empfohlen und verwendet, weshalb sie oft als Gerätebestückung in Unterlagen auftaucht (obwohl nicht Originalbestückung). Das war aber wichtig für den Service. Text in other languages (may differ)
Tube prices	13 Tube prices (visible for members only)
Literature	Radios von gestern Seite 243 Vergleichstabelle Taschenbuch zum Röhren-Codex 1948/49 page462 Saga of the Vacuumtube, Tyne


	Reparatur-Praktikum von Kappelmayer Egon Strampe

Röhrensammlung
Hermann Fleischanderl

JK Prüfkarte Röhrenprüfgerät W 18N
Jörg Kulbe

RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

Usage in Models (calculation each 25th of the month)

3= 1928?? ; 3= 1928? ; 24= 1928 ; 1= 1929?? ; 46= 1929? ; 86= 1929 ; 5= 1930?? ; 40= 1930? ; 87= 1930 ; 2= 1931?? ; 12= 1931? ; 125= 1931 ; 5= 1932?? ; 27= 1932? ; 118= 1932 ; 4= 1933?? ; 16= 1933? ; 63= 1933 ; 2= 1934? ; 17= 1934 ; 5= 1935?? ; 5= 1935? ; 15= 1935 ; 5= 1936?? ; 4= 1936? ; 22= 1936 ; 1= 1937?? ; 1= 1937? ; 20= 1937 ; 1= 1938?? ; 3= 1938? ; 6= 1938 ; 1= 1939?? ; 1= 1939 ; 4= 1940?? ; 1= 1941?? ; 3= 1945 ;

Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 816

No further Information for

REN904

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