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ID = 31326
Brand: Tungsram; Budapest (see also British T.)
Tube type:  Vacuum Pentode   Power/Output 
Identical to OS1
Similar Tubes
Other base:

Base Europe side contact P8A (Au P, 8SC) Top contact with a cap.
Filament Vf 6.3 Volts / If 1.3 Ampere / Indirect / Parallel, (AC/DC defined voltage)

Daten aus PREHLED-ELEKTRONEK von 1956

25W Leistungspentode, bei Ug = -45V, Ua = 600V, Ug2 = 300V, Ia = 68mA, Ig2 = 36mA
S = 4mA/V, Ra = 6000 Ohm

Dort wird die Uf mit 4,3V angegeben, was ein Druckfehler ist. Herr Heigl hat das mit seinen Messungen bestätigt.

Dimensions (WHD)
incl. pins / tip
50 x 125 x mm / 1.97 x 4.92 x inch
OS1: g.h.
Gerhard Heigl

OS1: Telefunken Werkstattbuch
Wolfgang Bauer

OS1: Thanks to László Fogl who sent me.
Ottó Jancsek

from Just Qvigstad

Usage in Models 1= 1956? ; 3= 1958?

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):4

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