Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 53851
Soviet Union
Brand: Common type USSR (SU) tube/semicond.
Tube type:  Beam Power Tube   Power/Output 
Identical to 2П4М

Base Octal (Int.Octal, IO) K8A, USA 1935
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.12 Ampere / Direct / Battery =
Description 2П4M (Russian designation)
Va = 120V Ia = 7mA
Vg2 = 80V Ig2 = 2mA
Vg1 = -6V
S mA/V = 2 Ri = 60000
Po = 0.25 P = 2.5W 
Text in other languages (may differ)
Information source -- Collector info (Sammler)   Radio N°2 1946 (UdSSR)
2П4М: Own collection
Valery Gromov

Jean Marchal


from Just Qvigstad

Usage in Models 1= 1941

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

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]