{"product_id":"uv-201a-01-a-westinghouse-lamp-co-u-s-a-for-rca-radiotron-u-s-a-globe-radio-tubes-nos-nib-20s-copia","title":"UV-201A ( 01-A ) RCA Radiotron USA by WESTINGHOUSE LAMP CO. USA Globe Radio Tubes NOS NIB '20s","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cstrong\u003eUV-201A ( 01-A ) RCA Radiotron USA by WESTINGHOUSE LAMP CO. USA Globe Radio Tubes NOS NIB '20s\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-end=\"957\" data-start=\"0\"\u003eThis \u003cstrong data-end=\"104\" data-start=\"37\"\u003eUV-201A (01-A) Westinghouse Lamp Co. USA made for RCA Radiotron\u003c\/strong\u003e , original production \u003cstrong data-end=\"139\" data-start=\"127\"\u003efrom the 1920s\u003c\/strong\u003e , is an extremely rare vintage globe tube, supplied in \u003cstrong data-end=\"221\" data-start=\"210\"\u003eNOS NIB\u003c\/strong\u003e condition complete with original box and inner papers. It is one of the most iconic models of the first generation of American radio tubes, used as \u003cstrong data-end=\"405\" data-start=\"375\"\u003ea detector and amplifier\u003c\/strong\u003e in radios of the 1920s and considered today a reference object in historical collecting. \u003cbr data-end=\"509\" data-start=\"506\"\u003eThe \u003cstrong data-end=\"537\" data-start=\"518\"\u003esilver globe\u003c\/strong\u003e tube retains exceptional brilliance and integrity, while the Bakelite base bears the Westinghouse for RCA Radiotron inscriptions, a testament to the industrial collaboration of the time. This example has been tested in our laboratory with a \u003cstrong data-end=\"804\" data-start=\"789\"\u003eVERY STRONG\u003c\/strong\u003e rating, a truly rare occurrence for such ancient tubes, making it suitable not only for collecting but also for the philological restoration of vintage equipment.\u003c\/p\u003e\n\u003cp data-end=\"1228\" data-start=\"959\"\u003e\u003cstrong data-end=\"987\" data-start=\"961\"\u003eSound Characteristics\u003c\/strong\u003e\u003cbr data-end=\"990\" data-start=\"987\"\u003eAlthough it was a tube created for radio applications in the early 1900s, the UV-201A is still appreciated today for its extremely natural, smooth and harmonic-rich output, typical of the low-power triodes of the time.\u003c\/p\u003e\n\u003cp data-end=\"1360\" data-start=\"1230\"\u003e\u003cstrong data-end=\"1239\" data-start=\"1230\"\u003eBass\u003c\/strong\u003e \u003cbr data-end=\"1242\" data-start=\"1239\"\u003eSmooth, clean, contained yet well-defined in their original structure. Perfectly consistent with the vintage timbre.\u003c\/p\u003e\n\u003cp data-end=\"1547\" data-start=\"1362\"\u003e\u003cstrong data-end=\"1370\" data-start=\"1362\"\u003eMedium\u003c\/strong\u003e\u003cbr data-end=\"1373\" data-start=\"1370\"\u003eVery natural and organic. Voices are reproduced with surprising realism for such an ancient technology, thanks to the direct triode and hot-wire construction.\u003c\/p\u003e\n\u003cp data-end=\"1684\" data-start=\"1549\"\u003e\u003cstrong data-end=\"1557\" data-start=\"1549\"\u003eHigh\u003c\/strong\u003e\u003cbr data-end=\"1560\" data-start=\"1557\"\u003eSweet, delicate, and slightly attenuated, with the typical airiness of vintage globe triodes. No harshness, no harshness.\u003c\/p\u003e\n\u003cp data-end=\"1845\" data-start=\"1686\"\u003e\u003cstrong data-end=\"1698\" data-start=\"1686\"\u003eDynamics\u003c\/strong\u003e\u003cbr data-end=\"1701\" data-start=\"1698\"\u003eThe dynamics are soft and progressive: the valve responds with elegance and graduality, favoring musicality and naturalness over impact.\u003c\/p\u003e\n\u003cp data-end=\"2042\" data-start=\"1847\"\u003e\u003cstrong data-end=\"1861\" data-start=\"1847\"\u003eSoundstage\u003c\/strong\u003e\u003cbr data-end=\"1864\" data-start=\"1861\"\u003eIntimate, believable, with a surprising three-dimensionality for a component designed a century ago. It offers a compact yet authentic soundstage, with a decidedly \"antique\" feel.\u003c\/p\u003e\n\u003cp data-end=\"2129\" data-start=\"2044\"\u003e🎧 \u003cstrong data-end=\"2084\" data-start=\"2047\"\u003eUse in Hi-Fi and Vintage Equipment\u003c\/strong\u003e\u003cbr data-end=\"2087\" data-start=\"2084\"\u003eThe UV-201A is primarily intended for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-end=\"2184\" data-start=\"2132\"\u003erestorations of radios from the 1920s and early 1930s,\u003c\/li\u003e\n\u003cli data-end=\"2235\" data-start=\"2187\"\u003edirect triode experimental equipment,\u003c\/li\u003e\n\u003cli data-end=\"2284\" data-start=\"2238\"\u003ephilological projects and museum reconstructions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2470\" data-start=\"2286\"\u003eIn modern systems it can only be used in specific circuits, always respecting the filament current and the expected anode voltage.\u003c\/p\u003e\n\u003cp data-end=\"2734\" data-start=\"2472\"\u003e🎸 \u003cstrong data-end=\"2507\" data-start=\"2475\"\u003eUse in Music Applications\u003c\/strong\u003e\u003cbr data-end=\"2510\" data-start=\"2507\"\u003eGenerally not used in modern musical amplifiers, it is nevertheless prized by builders and experimenters working with primitive triodes to achieve extremely warm, organic, low-power tones.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eTest Results:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eValve tested on \u003cstrong\u003eAVO CT 160\u003c\/strong\u003e Tube tester:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eTest Conditions:\u003c\/strong\u003e \u003cspan\u003eVa = 150V ; Vg = -9V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAverage 100%:\u003c\/strong\u003e \u003cspan\u003eGm = 800 ; Ia = 3 mA\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eTest Result:\u003c\/strong\u003e\u003cspan\u003e\u0026nbsp;\u003c\/span\u003eVERY STRONG\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValve: Gm = 1100; Ia = 7 mA\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cstrong\u003eAdditional Tests Performed:\u003c\/strong\u003e\u003cspan\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eOutput Quality:\u003c\/strong\u003e Excellent – Very strong and stable output, no fluctuations.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eShort circuits and GAS:\u003c\/strong\u003e Absent.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eConditions:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e NOS - NIB - New Old Stock, New In Box - Tested and working - Supplied in original box.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFunctionality:\u003c\/strong\u003e Fully functional.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCosmetic condition:\u003c\/strong\u003e \u003cspan\u003eGood – Lettering partially eroded, but still legible. Valve body in good condition. See photos for details.\u003c\/span\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eManufacturing Code:\u003c\/strong\u003e \u003cspan\u003eUnreadable – Made in the USA, identifiable by construction features. 1920s\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Why our tubes are different – the VTT protocol that improves sound, reliability and durability\" href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" target=\"_blank\"\u003e\u003cstrong\u003eFind out why our valves are different →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"RCA","offers":[{"title":"Default Title","offer_id":56031010292060,"sku":"03280","price":132.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_1d0a01f6-fd24-4104-bc00-871eb30bf032.jpg?v=1763741440","url":"https:\/\/vacuumtubestreasures.com\/en-hr\/products\/uv-201a-01-a-westinghouse-lamp-co-u-s-a-for-rca-radiotron-u-s-a-globe-radio-tubes-nos-nib-20s-en-1","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}