Antique radios, Old Time Radios
Dn1004
|
Country:
Netherlands
|
|
| Identical to |
Dn1004
|
| Similar
Tubes |
Normally replaceable-slightly different:
E443N
; PP4100
; RES664d
|
| First Source
(s) |
1930 : Radio-Expres, Netherlands
|
| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eoo)
|
| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 4 Volts / If 1 Ampere / Direct / Specified voltage AC/DC |
| Description |
Gm=2.2 at Va=200. R int=45k. (Radio-Expres 1930) To avoid the Philips penthode patent, Tungsram and Radio Record (and others)made tetrodes with a penthode characteristic. These tubes are listed as penthodes in tube manuals but are not. The use of the top connection is optional.
|
Dimensions (WHD)
incl. pins / tip |
52 x 148 x 34 mm / 2.05 x 5.83 x 1.34 inch |
| Weight |
82 g / 2.89 oz |
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
Radio-Expres, Netherlands
- - Manufacturers Literature
|
|
Dn1004
Peter den Boer
More ...
|
Just Qvigstad
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Dn1004: own collection
Peter den Boer
|
Collection of
Collection of a member from D |
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