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1F3

Information - Help 
ID = 3859
       
Country:
Great Britain (UK)
Brand: Ediswan, Siemens Edison Swan Electric Co.; London
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to 1F3 = DF91 = W17
First Source (s)
Nov.1948 : - - Manufacturers Literature Tentative data sheet

Base Miniatur-7-Pin-Base B7G, USA 1940
Filament Vf 1.4 Volts / If 0.05 Ampere / Direct / Battery =
Information source - - Manufacturers Literature   
 
gb_mazda_1f3.jpg
1F3: H.C.
Howard Craven

 
1f3_so.png
1F3: rtt
Michael Schlör

 
1f3data.png
1F3: own collection
Peter den Boer


from Just Qvigstad

Usage in Models 1= 1947 ; 2= 1949 ; 4= 1950 ; 4= 1951 ; 1= 1952? ; 2= 1952 ; 2= 1953 ; 1= 1954?? ; 1= 1954 ; 1= 1956?? ; 1= 1956 ; 1= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):21


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