Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 13174
Brand: Triotron (tubes) = Brand of Schrack, Austria
Tube type:  Triode, vacuum   Power/Output   Controlling (mu) 
Identical to YN4 = E409 = 104V = 41MP

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fc)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC

This is a low frequency type to be followed in the circuit by a transformer coupled directly heated power tube. This tube was also available metal sprayed.

Information source Taschenbuch zum Röhren-Codex 1948/49   
Wireless World (The), London (WW, 79)   Advertisement Dec 2 1931
- - Manufacturers Literature

triodeindirektb5_1.png YN4: Triotron Radio Röhrenbroschüre 1928
Thomas Lebeth

Just Qvigstad
YN4: Triotron Radio Röhrenbroschüre 1928
Thomas Lebeth

Collection of



You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]

Data Compliance More Information