Tubes have black ribbed plates, top side O getters.
Item Tag: 5U4GB 5AS4A
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5U4GB 5AS4A RCA 1950s radio audio amplifier vintage vacuum tubes 2 valves tested
Made in 1950s, tubes tests tubes have black ribbed plates, top side rectangular getters.
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4 General Electric 5U4GB/5AS4A Rectifier Tubes Hanging Halo Getters Tested
Constructed with gray plates and top hanging halo getters. Up for sale are 4 General Electric 5U4GB/5AS4A Rectifier Tubes.
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Closely Matched Pair 5U4GB/5AS4A GE NOS rectangle getter Vacuum Tubes, tested
Side Rectangle Getters. Closely Matched Pair. Vacuum Tubes. Tubes will generally be cleaned. Clean tubes will radiate heat better & operate cooler. Tested at 960/950 & 940/930. I often repair a box so it will function properly.
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5U4GB Motorola GE radio audio amplifier vintage electron vacuum tube valve 5AS4A
Tube has black smooth plates, clear top, top side double O getter, tube tests: 80, 84 %.
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Tightly Matched Pair 5U4GB/5AS4A Sylvania NOS black plate/tall boy Tubes tested
Tightly Matched Pair. Vacuum Tubes. Tubes will generally be cleaned. Clean tubes will radiate heat better & operate cooler. Triplett tests rectifiers under load (the best test) & indicates whether they test correctly or not – no GM on rectifiers.
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RCA 5U4GB / 5AS4A Radiotron Electron Tube New in box
RCA 5U4GB / 5AS4A Radiotron Electron Tube. New in box. We will work with you to resolve any problem you may have.