Röhren
Tubes
Lampes
Tubos
Zweifachdiode – Triode / Double Diode – Triode (2 × 2 + 3)
Niederfrequenz / Audio Frequency
Loktal 8-Stift Lo-8 (B8G) / Loctal 8-Pin Lo-8 (B8G)
Uf = 6,3 V; If = 0,3 A; ~ =
UaT = 100 V; IaT = 0,4 mA
UgT = - 1 V
Funke 478
Funke 479
Sylvania
France-Radio Inconnu