Antique radios, Old Time Radios
PT-240
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Country:
United States of America (USA)
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| Identical to |
PT-240
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| Similar
Tubes |
Normally replaceable-slightly different:
CX340
; UX240
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| Predecessor Tubes |
PR-1C
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| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX)
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| Was used by |
Industrial |
| Filament |
Vf 5 Volts / If 0.25 Ampere / Direct / Specified voltage AC/DC |
| Description |
This tube was designed by GE as an industrial version of the UX240. It is described as Pliotron. High mu 5 v fil. May have been used in GE carrier-current systems.
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Dimensions (WHD)
incl. pins / tip |
x 108 x 45 mm / x 4.25 x 1.77 inch |
| Weight |
47 g / 1.66 oz |
| Information source |
- - Manufacturers Literature GE Vacuum Tube Designations 12/10/1930
Radio Engineering January 1933
Tube Lore (II)
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PT-240: Fin Stewart
Fin Stewart
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Just Qvigstad
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