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CT25B

Information - Help 
ID = 44368
       
Country:
Great Britain (UK)
Brand: Cleartron Radio Ltd.; London
Tube type:  Triode, vacuum   Audio Frequency 
Identical to CT25B
First Source (s)
1925 : British Radio Valves - The Vintage Years, Thrower p.114

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 5 Volts / If 0.25 Ampere / Direct / Battery =
Information source -- Collector info (Sammler)   Banneitz, TB der drahtl. Telephonie u.Telegr. 1927
Wireless World (The), London (WW, 79)   Cleartron Advertisement: September 1925
 
ct25b.png
CT25B: R.O.
Rudolf Osterkamp

 
b4_1~~97.png
CT25B: Fin Stewart
Fin Stewart

 
ct25b_spec.png
CT25B: Banneitz, TB der drahtl. Teleph. 1927
Anonymous 15 Collector


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