Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 25799
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Tube type:  Beam Power Tube   Power/Output 
Identical to N148
Similar Tubes
Normally replaceable-slightly different:

Base Loctal-8, B8G (Sylvania, 1938)
Filament Vf 6.3 Volts / If 0.45 Ampere / Indirect / Specified voltage AC/DC

Ua: 250 V; Ia: 40 mA bei Ug1: 4,3 V.
Schirmgitter U: 250 V, 7,5 mA
Steilheit 10,8 mA/V
Pa: 4,3 W

Babani zeigt abweichend (vermutlich falsch) If: 0,95 A

Information source Babani, International Radio Tube Encyclopaedia   Book 2, p. 35

marconi_n148_base.png N148: edit from Marconi T38A R&TVS
Michael Watterson

Just Qvigstad
Usage in Models 3= 1950?? ; 2= 1950 ; 1= 1951? ; 1= 1952? ; 4= 1954

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):11

Collection of



You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]

Data Compliance More Information