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DW7

Information - Help 
ID = 3656
       
Country:
Great Britain (UK)
Brand: Marconi's Wireless Telegraph Co. Ltd.
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to DW7
First year Aug.1932 The Wireless World, London (WW, 79) p122

Base Europe 5-Pin (O5A, B5) (Codex=C) Top contact screw type
Filament Vf 4 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC)
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
dw7_mazda_lmp1.jpg
DW7: YBA
Bekir Yurdakul

 

Usage in Models 3= 1933

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3


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