Antique radios, Old Time Radios
F443
|
Country:
Netherlands
|
|
| Identical to |
F443
= L495D
|
| Similar
Tubes |
Normally replaceable-slightly different:
4650
; 822
; F443N
; L497D
; P440
; P460_Triotron
; PM24D
Other base:
F443_UY
|
| First year |
1930
- - Manufacturers Literature Zerdik-Information 1930 für den NF-Verstärker KV8.
|
| First Source
(s) |
Jul.1930 : -- Original-techn. papers.
Oct.1932 : Philips Bulletin #D3
|
|
Successor Tubes
|
1933
4650
F443N
|
| 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 |
The F443 is the first series produced 25 watts output-pentode, thus it is the ancester 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)
|
| Information source |
Babani, International Radio Tube Encyclopaedia p. 106 & 107
Universal Vade-Mecum, Electron Valves and Semiconductor Devices Section 209, p. 410
- - Manufacturers Literature
Taschenbuch zum Röhren-Codex 1948/49
|
|
F443: Telefunken Werkstattbuch
Wolfgang Bauer
|
Just Qvigstad
|
F443: Philips Verstärkerröhren
Gerhard Heigl
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):5
Collection of
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