Antique radios, Old Time Radios
25U4
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| Tube type: |
Half-Wave Vacuum Rectifier |
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| Identical to |
25U4
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| Similar
Tubes |
Other shape (e.g. bulb type):
25U4GT
Heater different:
6U4
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| Base |
Octal (Int.Octal, IO) K8A, USA 1935
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| Filament |
Vf 25 Volts / If 0.3 Ampere / Indirect / Specified current AC/DC ~ = (Series working) |
| Information source |
Röhren-Taschen-Tabelle, (Franzis RTT)
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25U4: RTT Schwandt
Günther Stabe † 19.8.20
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Just Qvigstad
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