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,
debanks, edicron, ediswan, ei, elpico, emi emston, era, eratron,
ever-ready, ferranti, ge, gec heinz, kaufman, haltron, hivac, hrs,
itt, jackson lamba, lorenz, marconi, mazda, mullard, national,
osram philips, rank, raphone, raytheon, rca, rft, selectron sovtek,
standard, svetlana, sylvania, telefunken, tronix, tungsram united,
valvo, westinghouse, zaerix
Marconi KT2
Marconi KT2 2 volt 'kinkless' low frequency
amplifying tetrode
KT2 pentode
This is an early beam or 'kinkless' tetrode
and replaced the earlier PT2 pentode.
PDF data sheets from the Osram 1938-39 data book are
here
and
here.
Data are given for operating two valves in quiescent push-pull.
Valves were marked with one of three grade letters on the top of
the bulb - V, W and X. These should be matched for QPP operation.