Antique radios, Old Time Radios
51S
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Country:
United States of America (USA)
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Brand:
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| Tube type: |
Screen-grid Tetrode RF/IF-Stage Controlling (mu) |
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| Identical to |
51S
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| Similar
Tubes |
Other shape (e.g. bulb type):
51
Normally replaceable-slightly different:
35
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| Base |
UY-Base, 5 Pins (USA, April 1927) (Codex=Ha)
Top contact with a cap.
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 2.5 Volts / If 1.75 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 123 x 45 mm / x 4.84 x 1.77 inch |
| Weight |
48 g / 1.69 oz |
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
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51S: ARRL Handbook 1972
Anonymous 10 Collector
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Just Qvigstad
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