Gray plates, dual mica spacers, and side D-getter. Our backup testers which we use occasionally are military TV-10D/U’s. For specialized tests, we employ one of our VTV Dual Triode Characterizers (for preamp tubes) as well as a Maxi-Matcher (for power tube matching).
Item Tag: AS-4A
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Realistic (Sylvania) 5U4GB/5AS4A Black Plate Halo Side O Getter Test on B&K 707
Realistic (Sylvania) 5U4GB/5AS4A Black Plate Halo Getter Side O Getter Tested on B&K 707 Thanks for checking out my listing!
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One 5U4GB / 5AS4A Tube, Black Plate, Admiral Brand, New In Box
One 5U4GB/5AS4A tube, black plate, branded Admiral (of Canada), made by RCA-Radiotron. A opportunity for you to buy one perfectly matched pair for same shipping cost.Price is for one tube only.Black plate and upper side 0-getter.Test ratings: 120/120 on my Jackson 648s tester, minimum at 70, new tubes at about 120.SHIPPING: Shipping to USA and Canada only with tracking. For Europe and Far East countries, please contact the Seller to get permission to buy ( due to higher tracking fees charged by Canada Post). Please pay in 3 days. Combined shipping is welcome. If you have paid for individual items and have surplus shipping fee paid for, I will refund you immediately when I send out the combined parcel.
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1 x NOS tube 5U4GB Trigon UK = 5DB4 H52 5AS4A 5AS4 422A
1 tube 5U4GB Trigon. Trigon was an UK tube distributor. Test result : 102% + 103%.
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GE 5AS4A 61-39 188-5 Grey Smooth Plate Side D Getter Tested on B&K 707
GE 5AS4A 61-39 188-5 Grey Smooth Plate Side D Getter Tested on B&K 707 Thanks for checking out my listing!
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General Electric GE 5U4GB 5AS4A Rectifier Vaccuum Tube Vintage Audio Electronic
5U4GB 5AS4A. Rectifier Vaccuum Tube. General Electric GE.
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Sylvania ECG 5U4GB-5AS4A Electronic Rectifier Vacuum Tube NOS
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.
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1960s GE 5U4GB 5AS4A Rectifier Tube – Hickok 539B tests @ 120/128, Min:54/54
Hickok 539B tested. Hickok 539B is a mutual conductance (Gm) type tube tester. Tube features grey smooth plates and a side-mounted ‘Rectangular’ getter construction. (Plate#1 / Plate#2). <<<<<<>>>>>>.
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TEST. SVETLANA. Rectifier 5C3S – 5U4G, 5U4GB, 5AS4A – dual-anode 1968. pcs 1
Rectifier 5C3S – 5U4G, 5U4GB, 5AS4A – dual-anode, directly heated 1968 PCS1. TEST: Uh=~5V, Ua=2 X 500V, R Anode resistance = 2KOhm, Cf=4 μF. Anode resistance: 2000 ohms. Filter capacitance: 4 μF. I will do my best to solve your problem.