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PT2

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ID = 3194
       
Country:
Great Britain (UK)
Brand:
Tube type:  Vacuum Pentode   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to PT2 = VR118 = 3777 = KT24 = PT2K
Similar Tubes
Normally replaceable-slightly different:
  KT2
Other base:
  PT2_UY
First Source (s)
Nov.1931 : Wireless World (The), London (WW, 79) advertisement
1935 : British Radio Valves - The Classic Years: 1926-1946 P. 264 & Supplement, p. 41
Successor Tubes KT2   NR39   ARP1  

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

Va=Vg2 <150;

Typ ia=9.5mA, Ig2=1.9, Vg1= -4.5, Rload=20k, Pout= 0.5W.

Also made with 4 pin base+sidecontact.

 
Information source Wireless World (The), London (WW, 79)   Nov 1934
- - Manufacturers Literature   Osram cat. 1936
History of the British Radio Valve to 1940
The Saga of Marconi Osram Valve

s_3_g_16.gif PT2: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20

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Just Qvigstad
pt.2_osram.png
PT2: osram wireless guide 1931
Giuseppe Antonio Tusini

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Usage in Models 1= 1929 ; 1= 1931 ; 5= 1932 ; 1= 1933?? ; 9= 1933 ; 10= 1934 ; 1= 1935? ; 4= 1935 ; 1= 1936? ; 5= 1936 ; 8= 1937

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):46

Collection of

 
osram_pt2__.jpg

PT2
 

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