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U220

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ID = 16840
       
Country:
Germany
Brand: Radioröhren-Laboratorium-GmbH, Gerd Nickel, (Ultra); Berlin
Tube type:  Gas Triode   Universal 
Identical to U220
First year 1924 Advert. Nov. 1924
First Source (s)
Jul.1928 : Funk Bastler 1928, Heft 33
Nov.1924 : Radio-Chronik Inserat Nov. 1924 SRT Radios

Was used by Radio/TV-reception etc.
Filament Vf 1.4 Volts / If 0.22 Ampere
Description

lt. Katalog Osthandel GmbH, Breslau V, für alle Schaltungen geeignet.

lt. Katalog Radio-Bauer (April 1927): Heizung 0,9-1,2 V / 0,13-0,16 A.

 
Literature Taschenbuch zum Röhren-Codex 1948/49   Daten falsch!
 
d_ultradr.nickel_u220_bild1.jpg
U220: Aus meiner Sammlung
Rudolf Osterkamp

 
ultra_u110~~1.png
U220: own collection
Peter den Boer


Usage in Models 2= 1924

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2


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