Antique radios, Old Time Radios
M144
|
Country:
Netherlands
|
|
| Identical to |
M144
|
| Similar
Tubes |
Normally replaceable-slightly different:
A415
; G410
|
| First year |
1927
Tube leaflet collection E.Erb Analysis by original leaflets
|
| First Source
(s) |
1927 : Radio-Expres, Netherlands
|
| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
|
| Filament |
Vf 4 Volts / If 0.1 Ampere / Direct / Battery = |
| Description |
Gm 2.0 at Va=200. Amplification factor 14, Internal R=7k. (Radio-Expres 1930)
|
Dimensions (WHD)
incl. pins / tip |
44 x 103 x 34 mm / 1.73 x 4.06 x 1.34 inch |
| Weight |
44 g / 1.55 oz |
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
Radio-Expres, Netherlands
- - Manufacturers Literature
|
|
M144: Tabu Röhren-Codex, 1948
Anonymous 15 Collector
More ...
|
Just Qvigstad
|
M144: own collection
Peter den Boer
|
Collection of
Collection of a member from D |
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