Antique radios, Old Time Radios
FR-503
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Country:
United States of America (USA)
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| Identical to |
FR-503
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| Similar
Tubes |
Normally replaceable-slightly different:
UY227
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| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX)
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| Was used by |
Industrial |
| Filament |
Vf 2.5 Volts / If 1.75 Ampere / Indirect / Specified voltage AC/DC |
| Description |
tHis tube was designed by GE as an undustrial versiion of the UY227. It It is described as a Pliotron AC general purpose.
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Dimensions (WHD)
incl. pins / tip |
x 108 x 45 mm / x 4.25 x 1.77 inch |
| Weight |
48 g / 1.69 oz |
| Information source |
- - Manufacturers Literature GE Vacuum Tube Designations 12/10/1930
Tube Lore (II) p. 26 & 213
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FR-503: Fin Stewart
Fin Stewart
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Just Qvigstad
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