Antique radios, Old Time Radios
257_concertmaster
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Country:
United States of America (USA)
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| Identical to |
257_concertmaster
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| Base |
UY-Base, 5 Pins (USA, April 1927)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 5 Volts / If 0.3 Ampere / Direct / Specified voltage AC/DC |
| Description |
This tube was intended for use in the output stage of D. C. line operated receivers and was designed to give relatively high amplification and power output with low plate voltage (110) available for this type of service. National Union and Tung-Sol also made this tube.
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Dimensions (WHD)
incl. pins / tip |
x 135 x 52 mm / x 5.31 x 2.05 inch |
| Information source |
-- Collector info (Sammler)
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257_concertmaster: Fin Stewart
Fin Stewart
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Just Qvigstad
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