Antique radios, Old Time Radios
4S
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Country:
United States of America (USA)
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Brand:
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| Tube type: |
Double Diode Audio Frequency |
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| Identical to |
4S
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| Similar
Tubes |
Normally replaceable-slightly different:
2S/4S
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| Base |
UY-Base, 5 Pins (USA, April 1927) (Codex=H)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 2.5 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC |
| Description |
The shield on this tube is metallised paint. Replacement tubes made by National Union, Raytheon and Sylvania utilised a sheet metal shield.
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Dimensions (WHD)
incl. pins / tip |
x 103 x 38 mm / x 4.06 x 1.50 inch |
| Weight |
34 g / 1.20 oz |
| Information source |
Babani, International Radio Tube Encyclopaedia p. 6 & 7
-- Collector info (Sammler)
Taschenbuch zum Röhren-Codex 1948/49
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren
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4S: Internet
Miguel Angel Trujillo-Rodriguez
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4S: Telefunken Werkstattbuch
Wolfgang Bauer
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Just Qvigstad
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):8
Collection of
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