Antique radios, Old Time Radios
F443N
|
Country:
Netherlands
|
|
| Identical to |
F443N
= L497D
|
| Similar
Tubes |
Normally replaceable-slightly different:
F443
; P460_Triotron
; TM-3G-BF25
Other class quality (otherwise equal):
4650
|
| First year |
1933
Tube leaflet collection E.Erb Analysis by original leaflets
|
| First Source
(s) |
Oct.1933 : -- Original prospect or advert
|
| Predecessor Tubes |
F443
|
|
Successor Tubes
|
1947
EL60
EL34
AL5
EL5
|
| Base |
Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Foo)
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 4 Volts / If 2 Ampere / Direct / Specified voltage AC/DC |
| Description |
F443 is the first series produced 25 watts output-pentode, thus it is the ancestress of the later EL34. At 550 Vp and 250 Vg2 the F443N is capable of 41 watts output power in push-pull [Jacob Roschÿ, 2003-03-17]
Text in other
languages (may
differ)
|
| Tube prices |
3 Tube prices (visible for members
only)
|
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
|
F443N: ficha de valvulas
Getulio Jimenez-Gomez
|
F443N: Telefunken Werkstattbuch
Wolfgang Bauer
More ...
|
Just Qvigstad
|
F443N: Philips Röhren Daten 1933
Peter Hoddow
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):17
Collection of
Collection of a member from D Collection of a member from FIN |
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Variants
F443N with balloon shaped bulb
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