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1C1

Information - Help 
ID = 31581
       
Country:
Great Britain (UK)
Brand: Ediswan, Siemens Edison Swan Electric Co.; London
Tube type:  Pentagrid-Converter (Heptode)   Frequency converter 
Identical to 1C1 = DK91 = X17

Base Miniatur-7-Pin-Base B7G, USA 1940
Was used by Radio/TV-reception etc.
Filament Vf 1.4 Volts / If 0.05 Ampere / Direct / Battery =
Description Ediswan or Mazda branded. Sometimes also marked DK91 also. 
Dimensions (WHD)
incl. pins / tip
19 x 54 x mm / 0.75 x 2.13 x inch
Weight 10 g / 0.35 oz
Literature - - Manufacturers Literature   
  1c1.png
  1C1
Egon Strampe
 
1c1_ediswan.jpg
1C1
Anonymous 413 Collector

 
1c1_heptode_so_1.png
1C1: rtt
Michael Schlör

 
1c1_ediswan_data_01.png
1C1: Original data sheet
Michael Schlör


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

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):11

Collection of a member from FIN

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