20VT-179
Type: Pentode*/M Culot: L222
Filament: tension 1.4 volts Intensité 0.05 A
Anode: Tension plaque maxi 90 Volts Intensité 1.6
Comnande : Tension Ecran 90 Volts Polarisation grille 0/-4.5
R interne: 1.1M Pente: 0.8