Radios antiguas y Radios de Colección
PM1HL
Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
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Usada en |
Radio/TV-reception etc. |
Filamento |
Vf 2 Volt / If 0.1 Ampere / Direct / Battery = |
Descripción |
Medium Impedance Triode. Ri=22.5k, Gm=1.2mA/V at Va=150, Ia=2.3mA, Vg=-1.5V.
Clear or metallised bulb.
The 1933 Mullard data optimistically calls it "Non Microphonic Detector" and "...Complete freedom from microphony"
It is also therein suggested as being suitable for the RF and IF stages.
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Literatura |
L'ABCDaire des lampes de TSF des jeunes années p. 79
History of the British Radio Valve to 1940 p. 166
- - Manufacturers Literature
Taschenbuch zum Röhren-Codex 1948/49
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PM1HL: Telefunken Werkstattbuch
Wolfgang Bauer
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Just Qvigstad
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PM1HL: Mullard Valves 1936
Peter Hoddow
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