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.
Item Tag: AS-4A
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SYLVANIA 5U4GB-5AS4A VACUUM TUBE NSNP
With our dynamic pricing model, our prices are always competitive. Competitive Pricing.
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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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5AS4A NOS RCA amplifier radio audio rectifier electron vacuum tube tested 5U4GB
Tube has black ribbed plates, clear top, top side rectangular getter.
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Tightly Matched Pair 5AS4A Miniwatt by RCA black plate Tubes Triplett 3444 test
Miniwatt made by RCA. Triplett tests rectifiers under load (the best test) & indicates whether they test correctly or not – no GM on rectifiers. Test results given are from the 1000 scale for comparison.
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GE 5U4GB / 5AS4A Rectifier Tube …….NOS…..Match pr
Up for sale is a MATCHED pair of NOS, GE 5U4GB / 5AS4A rectifier tubes. They are in excellent condition and both have been tested on a Amplitrex, top-of-the-line tube tester. Both tested excellent ( nos) with a close match.
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NOS GE 5U4GB Clear Top Long Gray Rectifier Tube TESTED 5U4 5AS4A
I was told by my supplier that this tube is NOS but I do see some of the lettering on the tube itself worn off, not sure if due to age or handling, but it tests very strong.
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5AS4A (5U4GB) Vacuum Tubes – Various Brands USA – $12.95/ea (TESTED GUARANTEED)
Picture is representative of one of the boxes of rectifier tubes; note the tube you receive may or may not be shown in the picture; most likely not given the thousands of tubes we have. The testers we use are Phil Frakes’s Bitmatic computerized Cardmatic testers from Tubesontheweb, the specific models are Western Electric KS-15874-L2’s which were made for Western Electric by Hickok; we currently own two of these testers.
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2 x 5AS4A Westinghouse Rectifier Tubes *Black Plates*TESTED*NOS*NIB*#10
2 x 5AS4A Westinghouse Rectifier Tubes. NIB – boxes may be tattered. The price is for 2 tubes. Black Plates.