Antique radios, Old Time Radios
6939
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| Tube type: |
Double Tetrode |
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| Identical to |
6939
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| Similar
Tubes |
Normally replaceable-slightly different:
7645
; QQE02/5
Differences not known by us:
7699
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| Base |
Noval, 9 pin miniature (USA pico-9) B9A
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| Filament |
Vf 12.6 Volts / If 0.3 Ampere / Indirect / Specified voltage AND current AC/DC |
| Description |
Durch Heizfaden-Mittenanschluss auch Betrieb mit 6.3 V und 0.6 A möglich.
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| Tube prices |
2 Tube prices (visible for members
only)
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| Information source |
Röhren-Taschen-Tabelle, (Franzis RTT)
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6939: The radio amateur's handbook 1964
Günter Kudicke
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6939: RTT Schwandt
Günther Stabe † 19.8.20
More ...
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Just Qvigstad
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6939: Telefunken Taschenbuch 1971
Anonymous 15 Collector
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2
Collection of
Collection of a member from D |
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