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220PT

Information - Help 
ID = 10792
       
Country:
Great Britain (UK)
Brand: Cossor, A.C.; London
Tube type:  Vacuum Pentode   Power/Output 
Identical to 220PT = PM22

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Eoo)
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.2 Ampere / Direct / Battery =
Description

Wurde auch mit Sockel 4 Stift (B4, A, 4A) 1914 France geliefert.

 
Information source Taschenbuch zum Röhren-Codex 1948/49   
History of the British Radio Valve to 1940   p.186
 
596_1.png
220PT: Telefunken Werkstattbuch
Wolfgang Bauer

 
220pt_data.png
220PT: COSSOR VALVE MANUAL 1935-6
Jose Casas-Avalos


from Just Qvigstad

Usage in Models 1= 1929? ; 1= 1931 ; 2= 1933 ; 1= 1934 ; 1= 1935?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):6

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