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ACH1n

Information - Help 
ID = 27404
       
Country:
Czechoslovakia
Brand: Tesla; Praha, Bratislava etc.
Developer: Telefunken Deutschland (TFK), (Gesellschaft für drahtlose Telegraphie Telefunken mbH 
Tube type:  Triode-Heptode   Frequency converter   Controlling (mu) 
Identical to ACH1n
Similar Tubes
Heater different:
  ECH4

Base Europe side contact base P (P8A) Top contact with a cap
Filament Vf 4 Volts / If 0.6 Ampere / Indirect / Parallel, (AC/DC)
Description This is an ECH4, fitted with a 4 volt- heater as a rather makeshift replacement for the ACH1. It requires alterations of wiring and anode and screen resistors. 
Text in other languages (may differ)
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
ach1n.jpeg
ACH1n: Photo of tube from my collection - TS
Tomasz Szczesniak

 
au46~~1.png
ACH1n: RTT 1974 (Franzis) 13. Auflage
Martin Renz

 
ach1n.png
ACH1n: Tesla catalogue
Gabriel Toth



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