| Adzam UCH21 Triode-HeptodeAdzam = tubes made by MBLE (Manufacture Belge de Lampes Electriques), Belgium. Designed for use as frequency converter, H.F., I.F. and L.F. amplifier and phase inverter. Fiche technique • Data sheet • Datenblatt: UCH21.pdf Thanks to Jacques Henrion (F4EPV) who donated this tube. 
 
 Hauteur • Height • Höhe : 75 mm • 3" 
 
 
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