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CT201A

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ID = 44369
       
Country:
Great Britain (UK)
Brand: Cleartron Radio Ltd.; London
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Triode, vacuum   RF/IF-Stage 
Identical to CT201A = UV201A = C301A
Similar Tubes
Normally replaceable-slightly different:
  C509A
First Source (s)
1925 : British Radio Valves - The Classic Years: 1926-1946 supplement, p. 17
Base UV-Base (4 Pins+Bayonet, USA 1914 WE)
Was used by Radio/TV-reception etc.
Filament Vf 5 Volts / If 0.25 Ampere / Direct
Description

This tube is identical to the CT201A made by the parent company in the USA and is probably an import from them. The tube box is clearly marked Cleartron London and Birmingham.

 
Dimensions (WHD)
incl. pins / tip		 x x 45 mm / x x 1.77 inch
Information source -- Collector info (Sammler)   Banneitz, TB der drahtl. Telephonie u.Telegr. 1927
Wireless World (The), London (WW, 79)   Cleartron Advertisement: September 1925
s_217_g_11~~1.gif CT201A: W.Sprick: Austausch-Röhren-Lexikon 1947
Günther Stabe † 19.8.20
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Just Qvigstad 		ct201a_spec.png
CT201A: Banneitz, TB der drahtl. Teleph. 1927
Anonymous 15 Collector
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Collection of

Peter den Boer † 2025 (NL)
 
ct201a.jpg

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