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ID = 72493
United States of America (USA)
Brand: Perryman Electric Co., Inc.; North Bergen, NJ
Tube type:  Triode, vacuum   Universal 
Identical to PA226 = UX226 = 326 = 26 = 226
First Source (s)
1929 : -- Original prospect or advert

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Was used by Radio/TV-reception etc.
Filament Vf 1.5 Volts / If 1.05 Ampere / Direct / Specified voltage AC/DC
Description The advertisement in "Radio" Nov. 1929 shows that this tube was fitted with the patented ceramic Perryman Bridge. This was two special spacers, one placed between the press and element base. This had the necessary wires pass through it for sturdiness, insulation and parallel alignment. The second bridge was on top of the element structure. In directly heated tubes, the filament was also held in place with a tension spring. This element structure would have been expensive to make and it is not known how long this tube variation was commercially available. 
Dimensions (WHD)
incl. pins / tip
x 108 x 45 mm / x 4.25 x 1.77 inch
Information source Radio Manufacturers of the 1920's, Vol. 2   November 1929, page 61

ux_base_standard~~103.png PA226: Fin Stewart
Fin Stewart

Just Qvigstad
PA226: Manufacturer's Literature 1929
Anonymous 15 Collector

Collection of



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