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BW1304

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ID = 13848
       
Country:
Great Britain (UK)
Brand:
Developer: Métal; France (tubes) 
Tube type:  Triode, vacuum   RF/IF-Stage 
  Ca. 1925 up to 1945 rare.
Identical to BW1304
Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.2 Ampere / Direct / Battery =
Description

Babani gives the heater current as 0.1A not 0.2 (Röhren-Codex). Tube used as class A amplifier

 
Information source L'ABCDaire des lampes de TSF des jeunes années   p. 77
Babani, International Radio Tube Encyclopaedia   p. 54 & 55
Taschenbuch zum Röhren-Codex 1948/49
British Radio Valves - The Classic Years: 1926-1946
b4_base_pins~~560.png BW1304: Fin Stewart
Fin Stewart

Just Qvigstad
 
eta_bw1304_tube_pdb.jpg

 
Forum contributions about this tube
BW1304
Threads: 2 | Posts: 2
Hits: 2300     Replies: 0
BW1304 (BW1304)
Peter den Boer † 2025
05.Apr.11 		  1
BW1304 (BW1304) 

The brand is changed into Common production France because this tube is sold under the Mazda, Metal, Cyrnos and Eta brand.
 
Hits: 2437     Replies: 0
BW1304 (BW1304)
Peter den Boer † 2025
04.Mar.11 		  1
BW1304 (BW1304) 

The ETA brand, from 1931 on.
The Electrical Trading Association Ltd
Aldwych House, Aldwych,
London WC2
This company imported Mètal/Mazda (French) tubes but used there own ETA brand, but the type numbering is from Mètal/Mazda. The UNIS FRANCE logo on tubes and boxes proves that they are really made in France.
 

Datasheet atteched.

 

Attachments

 
BW1304
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