Antique radios, Old Time Radios
PM12M
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Country:
Great Britain (UK)
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| Identical to |
PM12M
= VR41
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| Similar
Tubes |
Normally replaceable-slightly different:
CV1041
; VS2_362
Other base:
PM12M_UX
|
| First Source
(s) |
Sep.1933 : - - Manufacturers Literature
1933 : History of the British Radio Valve to 1940 p. 193
|
| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Er)
Top contact screw type.
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 2 Volts / If 0.18 Ampere / Direct / Battery = |
| Description |
Available in clear or metallised bulb (1935)
Va<150; Vg2<90; Gm=1.4mA/V at -Vg1=0; Gm=0.014mA/V at -Vg1=7.
Original documentation calls it a "Multi-Mu" valve.
|
Dimensions (WHD)
incl. pins / tip |
x 130 x 45 mm / x 5.12 x 1.77 inch |
| Weight |
54 g / 1.90 oz |
| Information source |
History of the British Radio Valve to 1940 p. 150 & 193
Babani, International Radio Tube Encyclopaedia p 128 & 129
-- Original-techn. papers.
Taschenbuch zum Röhren-Codex 1948/49
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PM12M: Telefunken Werkstattbuch
Wolfgang Bauer
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Just Qvigstad
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PM12M: Mullard Maintenance Manual 1954
Achim Dassow
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):34
Collection of
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