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1R5SF

Information - Help 
ID = 27445
       
 
   
Tube type:  Pentagrid-Converter (Heptode) 
Identical to 1R5SF = 1H33

Base Miniatur-7-Pin-Base B7G, USA 1940
Filament Vf 1.4 Volts / If 0.025 Ampere / Direct / Battery =
Information source -- Collector info (Sammler)   
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1r5sf_a.jpg
1R5SF: scc
Christian Schaufelberger

 
1r5sf_so.png
1R5SF: rtt
Michael Schlör

 

from Just Qvigstad

Usage in Models 1= 1954?? ; 4= 1955?? ; 1= 1955? ; 1= 1956?? ; 1= 1956?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):8


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