{"product_id":"5v4g-gz32-raytheon-st-shape-black-plates-bottom-d-getter-tested-tube-made-in-usa-56","title":"5V4G \/ GZ32 RAYTHEON ST Shape Black Plates Bottom D Getter Tested Tube Made in USA '56","description":"\u003cp\u003e\u003cstrong\u003e5V4G \/ GZ32 RAYTHEON ST Shape Black Plates Bottom D Getter Tested Tube Made in USA '56\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTest Results\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eTubes Tested\u003c\/strong\u003e on\u003cstrong\u003e Funke W19 \u003c\/strong\u003eTube Tester:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVoltage Test:\u003c\/strong\u003e Va = 60V, Vf = 5V\u003cstrong\u003e\u003cbr\u003eGood From:\u003c\/strong\u003e Ia = 55 mA\u003cstrong\u003e\u003cbr\u003eAverage 100%:\u003c\/strong\u003e Ia = 84.6 mA\u003cstrong\u003e\u003cbr\u003eTEST RESULT:\u003c\/strong\u003e VERY STRONG\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTube \u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eSection 1\u003c\/strong\u003e: Ia = 78 mA\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eSection 2\u003c\/strong\u003e: Ia = 78 mA\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cstrong\u003eAdditional Tests Performed:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eEmission Quality:\u003c\/strong\u003e Excellent – Very strong and stable emission, no fluctuations.\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eShorts and GAS:\u003c\/strong\u003e Absent.\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eFine \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e5V4G \/ GZ32 RAYTHEON\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, authentic American production \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eMade in USA from 1956\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, characterized by the fascinating \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eST Shape\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e bulb, robust \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eBlack Plates\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, and the characteristic \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eBottom D Getter\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, a configuration representative of Raytheon's 1950s productions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe manufacturing code \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e280 604\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e identifies \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eRaytheon Manufacturing Company\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e and places the production in the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e4th week of 1956\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, confirming the American origin and the precise historical placement of this specimen. The classic ST shape and typical vintage internal construction further increase its interest for enthusiasts and restorers of vintage tube electronics.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe tube has been accurately tested in our laboratory using the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eFunke W19 Tube Tester\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, obtaining a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eVERY STRONG\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e classification. Both sections measured \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e78 mA\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, showing excellent balance and perfect uniformity of emission. The behavior was strong and stable, with no fluctuations, shorts, gas, or other detected anomalies.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e5V4G \/ GZ32\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is an indirectly heated full-wave rectifier, appreciated for its reliability and power supply characteristics in equipment designed for this type. Raytheon's American productions of the 1950s are particularly interesting for their robust construction and the quality of materials used.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIn compatible audio electronics, the choice of rectifier can contribute to the power supply behavior and the overall dynamic response of the device. This \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eRaytheon Black Plates\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e therefore represents an interesting solution for hi-fi amplifiers, preamplifiers, tube power supplies, professional equipment, and vintage restorations designed to use the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e5V4G \/ GZ32\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe tube is \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eVintage\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, accurately tested, and perfectly functional. The aesthetic conditions are \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eexcellent\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, with well-preserved silk-screen printing and minimal signs of time, and it is supplied in its \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eoriginal box\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA fascinating \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eRAYTHEON 5V4G \/ GZ32 ST Shape Black Plates Bottom D Getter Made in USA from 1956\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, truly tested and selected by \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eVacuum Tubes Treasures\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, ideal for those seeking a quality vintage American rectifier, with \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003estrong emission and perfectly aligned sections\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Vintage Tubes - Tested and perfectly functional. Supplied in original box. \u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eFunctionality: \u003c\/strong\u003ePerfectly operational.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eAesthetic condition:\u003c\/strong\u003e\u003cspan\u003e Excellent – Well-preserved lettering, minimal signs of time. See photos for details.\u003c\/span\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eManufacturing Code: \u003c\/strong\u003e280 604 → 280 → Raytheon Manufacturing Company, Waltham 54, Mass. ; 604 → RMA\/EIA Open Date Code → manufactured in the 4th week of 1956\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eDiscover why our tubes are different →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"RAYTHEON","offers":[{"title":"Default Title","offer_id":58866050007388,"sku":"03768I","price":476.0,"currency_code":"CNY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_ec547da3-1211-493b-8d2b-5266e43ecd72.jpg?v=1788021586","url":"https:\/\/vacuumtubestreasures.com\/en-cn\/products\/5v4g-gz32-raytheon-st-shape-black-plates-bottom-d-getter-tested-tube-made-in-usa-56","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}