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HL13C

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ID = 14306
       
Country:
Great Britain (UK)
Brand: Mullard Radio Valve Co. Ltd.;
Developer: Mullard Radio Valve Co. Ltd.;  
Tube type:  Triode, vacuum   Audio Frequency 
  Ca. 1925 up to 1945 rare.
Identical to HL13C = VT100B_GPO = HL13_Tungsram = CV1670 = C30B
Similar Tubes
Normally replaceable-slightly different:
  VT100_GPO
Other characteristic (electr. data):
  DA
Other base:
  CC2 ; HL13S ; HL13_Mullard
First Source (s)
22.Nov.1935 : Wireless World (The), London (WW, 79)
Base British-7-Pin, old (M7A) (Codex=Na) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 13 Volts / If 0.2 Ampere / Indirect / Specified voltage AND current AC/DC
Description

Designed for AF and detection. Alternative base to the side-contact HL13

 
Information source Taschenbuch zum Röhren-Codex 1948/49   
Babani, International Radio Tube Encyclopaedia   Pages 110 & 111
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
s_415_g_3.gif HL13C: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20

Just Qvigstad 		hl13c_techdat01.png
HL13C: Mullard Valves 1936
Peter Hoddow
Usage in Models 2= 1935 ; 3= 1936
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):5

Collection of

Roy Johnson (GB)
Tomasz Szczesniak (PL)
 
hl13c.jpg

HL13C
 
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