valve, tube, thermionic, electron, triode, tetrode, pentode, power,
magic eye, tuning indicator, nixie, history, data, data sheet,
specification, amplifier, radio, octal, B9A, B7G, B4, IO, KT88,
KT66, 12AX7, 12AY7, 12AT7, ECC81, ECC82, ECC83, 6L6, 6V6, EL34,
EL84, EM34, EM80, EM81, EM85, Mullard, Cossor, GEC, Gold Lion,
Marconi, Svetlana, Brimar, Ferranti, RCA, Sylvania, GE,6202,
amperex, arcturus, brimar, channelmaster, colvern, cossor dario,
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ever-ready, ferranti, ge, gec heinz, kaufman, haltron, hivac, hrs,
itt, jackson lamba, lorenz, marconi, mazda, mullard, national,
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standard, svetlana, sylvania, telefunken, tronix, tungsram united,
valvo, westinghouse, zaerix
PM2DX
PM2DX - later Mullard with top engraved id.
Detector triode, 2 V, 200 mA filament. Maximum anode voltage 150 V,
grid bias -6 V, mu 13.5, ra 10.7 kOhms. Cost 14/- in 1931,
equivalent to £109 today! B4 base.
PDF Data Sheets 1930, 1934