80 tube 280 rectifier type vacuum valve full wave vacuum rectifier
Brand New Original Vintage Marconi quad NOS NIB sealed
matched quad quartet
( 4 pieces = 4 tubes = 4 vintage vacuum tubes = 4 valves )
Still sealed from the original production
Marconi made in Italy
year 1950's Best quality
Short Bottle, fatboy badboy, professional version Long life
Mint conditions
Ultra Rare to find in such conditions
80 = R80_USA = EX680 = UX280 = VT-80 = KX80 = 80G = 280 = RGN380 = V580 = 180 = ER80 = 113A = 480 = P280 = RE-1 = CX380 = NX280 = G-80 = PH280 = KX-280 = 110E/59 = 1560-ux = CL-80 = C-280 = AC80 = PM280 = PU080 = ER280 = MX280 = X-280 = CV1708 = V510 = VT159_GPO = 680 = PR280 = NU-80 = RayX-280
other base 1560 ; 1882 ; 5AZ4 ; 5Y3G ; G2005 ; G5200 ; R52 ; RGN2005
Evolution of 5Y3GT 5Y3G 5Y3GB 5W4 5AZ4 80S RGN380 5Z4
Socket UX-Base 4 Pins (2 thick, USA 1924)
Filament heater Vf 5 Volt / If 2 Ampere / Direct / Parallel, ~ = (AC/DC)
The full-wave recitfier tube 80 is just a short name for the UX280, sometimes also named 280 or VT-80, KX-80, R80 or 80G.
History (Tyne 324): In 1925 two small full-wave rectifiers came on the market, the Westinghouse UV196, and the GE UX213. The UX213 was the first full-wave rectifier offered for sale by RCA. Work on this tube was started late in 1923. In December 1923 the designation Rectron UV213 was assigned. The final design was arrived at in the summer 1924 and was annunced as UX213 in September 1925. It was superseded in May 1927 by the UX280.
Westinghouse was working on a full-wave rectifier with a higher capacity than the UX213. The work was completed in April 1927 and anounced in May 1927.
box 58