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AR21

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ID = 13777
       
Country:
Great Britain (UK)
Brand: Common type Great Britain tube/semicond.
Tube type:  Double Diode-Triode   Audio Frequency 
Identical to AR21 = EBC33 = CV1055 = OM4 = ZA3497

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Uf)
Filament Vf 6.3 Volts / If 0.2 Ampere / Indirect / Parallel / series AC/DC
Description AR21 was later allocated the designation CV1055 
Literature Taschenbuch zum Röhren-Codex 1948/49   
-- Original-techn. papers.   
 
ar21ebc33_nue_ph1.jpg
AR21: Patrice ZEISSLOFF
Patrice Zeissloff

 
ar21_so.png
AR21: rtt
Michael Schlör

 

Usage in Models 1= 1940? ; 1= 1944

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


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