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ID = 307
Brand: Telefunken Deutschland (TFK), (Gesellschaft für drahtlose Telegraphie Telefunken mbH
Developer: Telefunken Deutschland (TFK), (Gesellschaft für drahtlose Telegraphie Telefunken mbH 
Tube type:  Double Tetrode   beam power   Audio Frequency 
Identical to UEL11
Similar Tubes
Heater different:
Other base and data slightly different:
Multiple differences or of other kind:
  UEL171 ; UEL51
First year 1949 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
Aug.1949 : Radio-Mentor # 8
May.1949 : Funkschau # 10
Predecessor Tubes VCL11   UCL11   WG34   VEL11  
Successor Tubes UCL81  

Base German Steel Y8A, 1938 Top contact with a cap.
Filament Vf 48 Volts / If 0.1 Ampere / Indirect / Specified current AC/DC ~ = (Series working)
Tube prices 4 Tube prices (visible for members only)

uel11_so.png UEL11: rtt
Anonymous 10 Collector

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Just Qvigstad
UEL11: J R
Jacob Roschy

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Usage in Models 3= 1949?? ; 4= 1949? ; 23= 1949 ; 1= 1950?? ; 1= 1950? ; 23= 1950 ; 1= 1951 ; 1= 9999

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):57

Collection of



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