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ID = 21540
Tube type:  Double Triode 
Identical to XCC189 = 4ES8
Similar Tubes
Heater different:
  ECC189 ; PCC189
First year 1960 Tube leaflet collection E.Erb Analysis by original leaflets

Base Noval, 9 pin miniature (USA pico-9) B9A
Was used by Radio/TV-reception etc.
Filament Vf 4.5 Volts / If 0.6 Ampere / Indirect / Specified current AC/DC ~ = (Series working)
XCC189: Photo of tube from my collection - TS
Tomasz Szczesniak

XCC189: RTT Schwandt
Günther Stabe † 19.8.20

XCC189: Philips, Buizen Zakboekje
Anonymous 15 Collector

from Just Qvigstad

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