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4T1

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ID = 20214
       
Country:
Italy
Brand: Magnadyne Radio; Torino
Tube type:  Triode, vacuum 
Identical to 4T1

Base Miniatur-7-Pin-Base B7G, USA 1940
Filament Vf 4.7 Volts / If 0.3 Ampere / Indirect / Specified current AC/DC ~ = (Series working)
Description Magnadyne cross-reference table from 'Twenty-Thousand Tubes', Mureddu-Atzeri, gives this tube equivalent to an unknown 4AF4A. Probably it is equivalent to the 5AF4A, same anode and heater characteristics. 
Text in other languages (may differ)

4t1.png 4T1
Giuseppe Feniello


Just Qvigstad
Usage in Models 2= 1962 ; 1= 1965??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3

Collection of

 
i_magnadyne_4t1.jpg

 

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