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6939

Information - Help 
ID = 20519
       
 
   
Tube type:  Double Tetrode 
Identical to 6939
Similar Tubes
Normally replaceable-slightly different:
  7645 ; QQE02/5
Differences not known by us:
  7699

Base Noval, 9 pin miniature (USA pico-9) B9A
Filament Vf 12.6 Volts / If 0.3 Ampere / Indirect / Parallel / series AC/DC
Description Durch Heizfaden-Mittenanschluss auch Betrieb mit 6.3 V und 0.6 A möglich. 
Tube prices 2 Tube prices (visible for members only)
Information source Röhren-Taschen-Tabelle, (Franzis RTT)   
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  6939_432mhz_transmitter.png
  6939: The radio amateur's handbook 1964
Günter Kudicke
 
roehre_6939_bild_1.jpg
6939: Eigenes Bild
Anonymous 971 Collector

 
no56_g_5.gif
6939: RTT Schwandt
Günther Stabe † 19.8.20

 
6939_spec.png
6939: Telefunken Taschenbuch 1971
Anonymous 15 Collector


from Just Qvigstad

Usage in Models 1= 1959 ; 1= 1960??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2


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