Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 38589
Brand: Werk für Fernmeldewesen (OSW, HF, WF) Berlin, VEB, RFT (Ostd.)
Tube type:  Pentagrid-Converter (Heptode)   Pentagrid (new) 
Identical to 6A7_DDR = 6SA7_DDR = HF3104 = OSW3104
Similar Tubes
Other shape (e.g. bulb type):
  6SA7GT ; 6А10С ; 6А7
First Source (s)
1949 : -- Collector info (Sammler)

Base Octal (Int.Octal, IO) K8A, USA 1935
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Specified voltage AND current AC/DC
Information source - - -   
- - -   
- - -
- - -

6sa7_6a7_osw_1.gif 6A7_DDR: Beier, RTB 1965
Wolfgang Eckardt

Just Qvigstad
6A7_DDR: Werk für Fernmeldewesen Schöneweide
Egon Strampe

Usage in Models 1= 1948??

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

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]