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ESW20

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ID = 86762
       
Country:
Great Britain (UK)
Brand: Ediswan, Siemens Edison Swan Electric Co.; London
Developer: Ediswan, Siemens Edison Swan Electric Co.; London 
Tube type:  Transmitting Triode, air cooled   Power/Output 
Identical to ESW20
Base UX-Base (4 Pins (2 thick, USA 1924, UX) Top contact screw type.
Was used by Transmittertube (Radio)
Filament Vf 7.5 Volts / If 2 Ampere / Direct
Description

This tube used for American short wave sets that were sold in the iK. It was only made with a UX base. Advertised in "Television and Short Wave World", May 1938. Production understood to have been limited.

 
Dimensions (WHD)
incl. pins / tip		 x 180 x 52 mm / x 7.09 x 2.05 inch
Weight 82 g / 2.89 oz
Information source -- Original prospect or advert   Television and Short Wave World, May 1938
esw20_pins.png ESW20: Fin Stewart
Fin Stewart

Just Qvigstad 		ediswan_esw20_ad_tv_sw_world_538.png
ESW20: Fin Stewart
Fin Stewart

Collection of

Fin Stewart (AUS)
 
ediswan_esw20_e1123_fs.jpg

 
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