The Sylvania ECG 5U4GB-5AS4A Electronic Rectifier Vacuum Tube is a vintage electronic component that falls under the category of Vintage Audio & Video and Vintage Electronics. Specifically, this unit is a new old stock (NOS) Philips 5U4GB vacuum tube, designed for use in various electronic devices. As a single unit, this electronic rectifier vacuum tube is a valuable piece for collectors and enthusiasts of vintage audio equipment and consumer electronics.
Item Tag: 5U4GB 5AS4A
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GE BLACKPLATE 5U4GB / 5AS4A rectifier tube – Tested Good on B&K Tester
Tube was tested on B&K model 400 tester.
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2 Philco 5U4GB 5AS4A 274B McIntosh 240 Seeburg V VL 200 R C amplifier tube # 38
2 used 5U4GB tubes that test good. Philco made by Sylvania, Black Plate Halo Getter.
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5U4GB/5AS4A GE NIB Vintage NOS Rectifier Vacuum Tube Perfect Balanced & Strong
The tube has grey plate and a hanging halo getter on the side hangs off the top to the side of the glass of the Tube. This tube has been fully tested and it is free of any leaks, shorts, emissions or quality issues.
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Tightly Matched Pair 5U4GB/5AS4A Sylvania Vacuum Tubes, Triplett 3444 tested
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. Tightly Matched Pair.
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3 GE General Electric 5U4GB 5AS4A Rectifier Tubes Communication Grade
Up for sale are 3 GE General Electric 5U4GB 5AS4A Rectifier Tubes. Red label GE = communication grade.
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NEW SYLVANIA 5U4GB-5AS4A HiFi Ham Radio Amp Vacuum Tube IOB
Tube checked good on a B&K 667 Tube Tester.
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NOS 5U4GB 5AS4A RCA Legendary Black Plate Rectifier 1963 Strong See Test
I have 2 of these that both test virtually the same with the same date code. This is for 1 tube but you will get a discount to buy both. The product is a vintage RCA 5U4GB rectifier tube from 1963, which is highly sought after due to its strong performance. It has been tested using a sencore mighty mite v tester and is known for its legendary black plate design. This particular tube was manufactured in the United States, adding to its collectability and desirability among vintage audio enthusiasts. Tubebx
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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.