Antique radios, Old Time Radios

C443N

ID = 1694

Country:

Netherlands

Brand:	Philips; Eindhoven (tubes international!); Miniwatt
Tube type:	Vacuum Pentode Power/Output
	Ca. 1925 up to 1945 rare.

Identical to

C443N = PP431 = L427D = RES374

Similar Tubes

Normally replaceable-slightly different:

D70

Other base:

C443N_UY

First year

1930 Tube leaflet collection E.Erb Analysis by original leaflets

First Source (s)

1930 : -- Collector info (Sammler)

Predecessor Tubes

C443 PP430

Base	Europe 5-Pin (O5A, B5) (Codex=Foo)
Filament	Vf 4 Volts / If 0.25 Ampere / Direct / Parallel, (AC/DC)
Description	About 1930 the C443 was replaced by the C443N, which was capable of slightly increasing the output power from 2,8 to 3 Watts but associated by increasing the grid bias from -25 to -42 Volts.[Jacob Roschÿ, 2003-01-17] Vg1: -45V !!! Vg2: 200V Va: 300V Text in other languages (may differ)
Literature	Taschenbuch zum Röhren-Codex 1948/49


	C443N: ficha de valvulas Getulio Jimenez-Gomez

C443N: Aus eigener Sammlung
Pim J.H. Vercoulen

C443N: Telefunken Werkstattbuch
Wolfgang Bauer

C443N: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

Usage in Models

2= 1930 ; 12= 1931

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):14

Collection of a member from D

Collection of Rodolfo Gaston Wenceslao Nasasta (RA)

Collection of Pim J.H. Vercoulen (NL)

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