Antique radios, Old Time Radios
L409
|
Country:
Netherlands
|
|
| Identical to |
L409
|
| Similar
Tubes |
Normally replaceable-slightly different:
A2004
; A442
; B442
; RES094
; S407
|
| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Er)
Top contact screw type.
|
| Filament |
Vf 4 Volts / If 0.1 Ampere / Direct / Battery = |
| Description |
It is claimed that the L409 can be used for HF, LF, MF amplification and as a detector, resistor coupling.
|
Dimensions (WHD)
incl. pins / tip |
45 x 128 x 34 mm / 1.77 x 5.04 x 1.34 inch |
| Weight |
48 g / 1.69 oz |
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
- - Manufacturers Literature 1935
|
|
L409: Telefunken Werkstattbuch
Wolfgang Bauer
|
Just Qvigstad
|
L409: own collection
Peter den Boer
|
Collection of
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