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E.52_SFR

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ID = 74695
       
Country:
France
Brand: Common type France tube/semicond.
Tube type:  Transmitting Triode, air cooled   Power/Output 
Identical to E.52_SFR = TM15 = E52

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Filament Vf 5.3 Volts / If 1.2 Ampere / Direct / Battery =
Description

This tube also exists under the Radiotechnique brand, see type E52 on Radiomuseum. This is probably the same tube (civil version of the TM15) manufactured under the two brands given the links between the companies Radiotechnique and SFR.

 
Text in other languages (may differ)
Information source Saga of the Vacuum Tube, Tyne   page 408


Just Qvigstad
 
e52_sfr_tm15_ebay_p03_s.jpg

 

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