{"title":"Valvole","description":null,"products":[{"product_id":"3-500zg-pentalabs-matched-pair-triodo-di-potenza-hi-mu-factory-matched-pair","title":"3-500ZG PENTALABS MATCHED PAIR -Triodo di potenza Hi Mu factory matched pair","description":"\u003cp style=\"text-align: center;\"\u003e\u003cimg alt=\" src=\" https: style=\"width: 230px; height: 212px;\"\u003e\u003c\/p\u003e    \u003ch3 style=\"text-align: center;\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size:16px;\"\u003eCOPPIA DI 3-500ZG(H) PENTALABS MATCHED PAIR by Ig, Hi Mu\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e    \u003cp style=\"text-align: center;\"\u003eTriodo di potenza per amplificatori\u003c\/p\u003e    \u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e    \u003cp style=\"text-align: center;\"\u003e\u003cimg alt=\" src=\" https: style=\"width: 500px; height: 333px;\"\u003e\u003c\/p\u003e    \u003cp style=\"text-align: center;\"\u003e \u003c\/p\u003e    \u003cp style=\"text-align: center;\"\u003eNuove, sigillate e selezionate dalla fabbrica per assicurare la selezione in coppia dei due tubi. Ogni tubo è corredato da scheda tecnica individuale con le singole correnti misurate.\u003c\/p\u003e    \u003cp style=\"text-align: center;\"\u003eLe 3-500ZG Pentalabs sono ZGH, dove la H sta per high Mu. Garanzia di un anno per difetti di fabbricazione.\u003c\/p\u003e","brand":"Pentalabs","offers":[{"title":"Default Title","offer_id":51683962061146,"sku":"3-500ZGH-MP","price":539.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/2113\/9290\/files\/3287.jpg?v=1754996157"},{"product_id":"572b-electron-valvola-di-potenza-per-radiofrequenza-e-audio","title":"572B Valvola di potenza per radiofrequenza e audio","description":"\u003cmeta charset=\"UTF-8\"\u003e\u003cdiv style=\"font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; width: 100%; max-width: 900px; margin: 0 auto; border: 1px solid #e2e8f0; background-color: #ffffff; line-height: 1.6; position: relative; overflow: hidden;\"\u003e\n\u003c!-- FILIGRANA SEMPRE IN PRIMO PIANO (z-index: 99) MA TRASPARENTE E PHANTOM --\u003e\u003cdiv style=\"position: absolute; top: 55%; left: 50%; width: 450px; height: 450px; background-image: url('https:\/\/cdn.shopify.com\/s\/files\/1\/0946\/2113\/9290\/files\/hrs_logo_new_senza_scritta.png?v=1776699756'); background-repeat: no-repeat; background-size: contain; background-position: center; opacity: 0.04; pointer-events: none; z-index: 99; transform: translate(-30%, -50%) rotate(-15deg);\"\u003e\u003c\/div\u003e\n\u003c!-- Header - Stile Componentistica \/ Valvole di Potenza (Fondo Antracite \u0026 Dettaglio Ambra) --\u003e\u003cdiv style=\"position: relative; padding: 50px 5%; border-bottom: 8px solid #d97706; background-color: #334155; z-index: 2;\"\u003e\n\u003c!-- Etichetta Categoria --\u003e\u003cdiv style=\"position: absolute; top: 25px; right: 5%; z-index: 10;\"\u003e\u003cdiv style=\"background: #d97706; color: #ffffff; font-size: 11px; font-weight: 900; text-transform: uppercase; letter-spacing: 2px; padding: 8px 18px; border-radius: 3px;\"\u003eVALVOLE TERMOIONICHE\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv style=\"position: relative; z-index: 2;\"\u003e\n\u003ch1 style=\"margin: 0 !important; font-size: 36px !important; text-transform: uppercase !important; letter-spacing: -1px !important; font-weight: 900 !important; line-height: 1.1 !important; color: #ffffff;\"\u003e572B\u003c\/h1\u003e\n\u003cp style=\"margin: 15px 0 0 !important; font-size: 18px !important; color: #fde68a; font-weight: 300 !important; text-transform: uppercase !important; letter-spacing: 3px !important;\"\u003eTrivodo di Potenza ad Alto Mu – RF \u0026amp; AUDIO\u003c\/p\u003e\n\u003cp style=\"margin: 12px 0 0 !important; font-size: 13px !important; color: #ffffff !important; font-weight: 600 !important; letter-spacing: 2px !important; text-transform: uppercase !important;\"\u003eAnodo in Grafite ad Alta Dissipazione – Ideale per Amplificatori Lineari HF\u003c\/p\u003e\n\u003cdiv style=\"width: 60px; height: 4px; background: #d97706; margin-top: 20px; border-radius: 2px;\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Contenuto --\u003e\u003cdiv style=\"padding: 40px 5%; position: relative; z-index: 2;\"\u003e\n\u003c!-- Box Caratteristiche Salienti - FONDO TRASPARENTE\/QUASI BIANCO --\u003e\u003cdiv style=\"margin-bottom: 35px; border-left: 4px solid #d97706; padding: 20px; background-color: #fffbeb; border-radius: 0 8px 8px 0; position: relative; z-index: 2;\"\u003e\n\u003ch2 style=\"color: #b45309; font-size: 15px; text-transform: uppercase; letter-spacing: 2px; margin: 0 0 10px 0; font-weight: 900;\"\u003eECCELLENZA COSTRUTTIVA E AFFIDABILITÀ\u003c\/h2\u003e\n\u003cp style=\"color: #1e293b; font-size: 15px; margin: 0; line-height: 1.6; font-weight: 500;\"\u003e• \u003cstrong\u003eDISSIPAZIONE ANODICA SUPERIORE:\u003c\/strong\u003e Struttura robusta progettata per sopportare cicli di lavoro gravosi senza deformazioni termiche, garantendo una lunga durata operativa.\u003cbr\u003e\u003cbr\u003e        • \u003cstrong\u003eAPPLICAZIONE DUALE:\u003c\/strong\u003e Ottimizzata sia per l'impiego in radiofrequenza (fino a frequenze HF in amplificatori lineari in classe AB2 o B) sia per stadi finali di amplificatori audio Hi-Fi valvolari radianti di fascia alta.\u003cbr\u003e\u003cbr\u003e        • \u003cstrong\u003eALTO FATTORE DI AMPLIFICAZIONE (MU):\u003c\/strong\u003e Consente di ottenere elevati guadagni di potenza con una richiesta minima di pilotaggio in ingresso.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Descrizione Prodotto --\u003e\u003cdiv style=\"margin-bottom: 40px; background: transparent; position: relative; z-index: 2;\"\u003e\n\u003ch2 style=\"color: #1e293b; font-size: 24px; margin-bottom: 15px; border-bottom: 2px solid #e2e8f0; padding-bottom: 10px; text-transform: uppercase; letter-spacing: 1px;\"\u003eMassimo Rendimento nei Lineari HF e Sistemi Audio\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px; color: #475569; line-height: 1.7; text-align: justify; margin-bottom: 20px;\"\u003eLa valvola termoionica 572B è un triodo di potenza a riscaldamento diretto ad alto coefficiente di amplificazione, ampiamente utilizzato nella riparazione, restauro e upgrade di noti amplificatori lineari radioamatoriali (come i classici YAESU FL-2100, Heathkit SB-200 o similari) e in ricercati progetti audio radianti. Grazie alla sua straordinaria linearità e tolleranza alle sovracorrenti temporanee, assicura un segnale pulito, un'efficienza ottimale e una stabilità di funzionamento eccezionale sui banchi di prova e nelle stazioni radio più esigenti.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Box Tecnici Affiancati - FONDO BIANCO PURO --\u003e\u003cdiv style=\"width: 100%; margin-bottom: 40px; position: relative; z-index: 2;\"\u003e\n\u003cdiv style=\"width: 47%; float: left; background-color: #ffffff; border: 1px solid #e2e8f0; padding: 20px; border-radius: 8px; border-top: 5px solid #334155; box-sizing: border-box;\"\u003e\n\u003ch3 style=\"color: #334155; font-size: 11px; text-transform: uppercase; margin: 0 0 8px 0; font-weight: bold; letter-spacing: 1px;\"\u003eTENSIONE FILAMENTO\u003c\/h3\u003e\n\u003cp style=\"font-size: 22px; font-weight: 800; color: #1e293b; margin: 0;\"\u003e6.3 Vca \/ Vcc\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"width: 47%; float: right; background-color: #ffffff; border: 1px solid #e2e8f0; padding: 20px; border-radius: 8px; border-top: 5px solid #d97706; box-sizing: border-box;\"\u003e\n\u003ch3 style=\"color: #d97706; font-size: 11px; text-transform: uppercase; margin: 0 0 8px 0; font-weight: bold; letter-spacing: 1px;\"\u003eDISSIPAZIONE ANODICA MAX\u003c\/h3\u003e\n\u003cp style=\"font-size: 22px; font-weight: 800; color: #d97706; margin: 0;\"\u003e160 W\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"clear: both;\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Tabella Specifiche Tecnica - STRUTTURA MINIMALISTA E TRASPARENTE --\u003e\u003cdiv style=\"background-color: transparent; position: relative; z-index: 2;\"\u003e\n\u003ch3 style=\"color: #1e293b; font-size: 18px; margin: 0 0 15px 0; text-transform: uppercase; font-weight: 800; letter-spacing: 1px;\"\u003eSpecifiche Tecniche di Riferimento\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px; background-color: #ffffff; border: 1px solid #e2e8f0;\"\u003e\n\u003cthead\u003e\u003ctr style=\"border-bottom: 2px solid #334155; text-align: left; background-color: #f8fafc;\"\u003e\n\u003cth style=\"padding: 12px 10px; color: #334155; font-weight: bold;\"\u003eParametro Caratteristico\u003c\/th\u003e\n\u003cth style=\"padding: 12px 10px; color: #334155; font-weight: bold;\"\u003eValore Nominale \/ Limite\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 10px; color: #1e293b; font-weight: bold; border-bottom: 1px solid #e2e8f0;\"\u003eTipo di Componente\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 10px; color: #475569; border-bottom: 1px solid #e2e8f0;\"\u003eTriodo di potenza ad alto fattore di amplificazione (High-Mu)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fbfbfc;\"\u003e\n\u003ctd style=\"padding: 12px 10px; color: #1e293b; font-weight: bold; border-bottom: 1px solid #e2e8f0;\"\u003eRiscaldamento\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 10px; color: #475569; border-bottom: 1px solid #e2e8f0;\"\u003eDiretto (Filamento Thoriated Tungsten)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 10px; color: #1e293b; font-weight: bold; border-bottom: 1px solid #e2e8f0;\"\u003eCorrente di Filamento\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 10px; color: #475569; border-bottom: 1px solid #e2e8f0;\"\u003e4.0 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fbfbfc;\"\u003e\n\u003ctd style=\"padding: 12px 10px; color: #1e293b; font-weight: bold; border-bottom: 1px solid #e2e8f0;\"\u003eFattore di Amplificazione (µ)\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 10px; color: #475569; border-bottom: 1px solid #e2e8f0;\"\u003e160\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 10px; color: #1e293b; font-weight: bold; border-bottom: 1px solid #e2e8f0;\"\u003eTensione Anodica Massima (DC)\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 10px; color: #475569; border-bottom: 1px solid #e2e8f0;\"\u003e2750 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fbfbfc;\"\u003e\n\u003ctd style=\"padding: 12px 10px; color: #1e293b; font-weight: bold; border-bottom: 1px solid #e2e8f0;\"\u003eCorrente Anodica Massima\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 10px; color: #475569; border-bottom: 1px solid #e2e8f0;\"\u003e275 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 10px; color: #1e293b; font-weight: bold; border-bottom: 1px solid #e2e8f0;\"\u003eTipo di Zoccolo \/ Base\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 10px; color: #475569; border-bottom: 1px solid #e2e8f0;\"\u003eSuper Jumbo a 4 pin (4-Pin Ceramic) con cappuccio superiore (Anodo)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Footer --\u003e\u003cdiv style=\"background-color: #334155; padding: 25px 5%; text-align: center; border-top: 5px solid #d97706; position: relative; z-index: 2;\"\u003e\u003cp style=\"margin: 0; color: #ffffff; font-size: 12px; letter-spacing: 2px; font-weight: bold; text-transform: uppercase;\"\u003eHamRadioShop | Componentistica e Ricambi Tecnici per Ricetrasmettitori e Amplificatori\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HAMRADIOSHOP","offers":[{"title":"Default Title","offer_id":51683972022618,"sku":"572B","price":63.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/2113\/9290\/files\/2540.jpg?v=1754986183"},{"product_id":"gu74b-nos-4cx800a-russian-new-tube-gu74b","title":"Valvola GU74B \/ 4CX800A Tetrodo Ceramico per Amplificatori Acom e Alpha | HRS","description":"\u003cmeta charset=\"UTF-8\"\u003e\u003cdiv style=\"font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; width: 100%; max-width: 1000px; margin: 0 auto; border: 1px solid #e2e8f0; background-color: #ffffff; line-height: 1.6; position: relative; overflow: hidden; box-shadow: 0 4px 25px rgba(0,0,0,0.08);\"\u003e\n\u003c!-- FILIGRANA RIPOSIZIONATA PIÙ IN ALTO (top: 35%) E IN PRIMO PIANO ASSOLUTO (z-index: 99) --\u003e\u003cdiv style=\"position: absolute; top: 35%; left: 50%; width: 480px; height: 480px; background-image: url('https:\/\/cdn.shopify.com\/s\/files\/1\/0946\/2113\/9290\/files\/hrs_logo_new_senza_scritta.png?v=1776699756'); background-repeat: no-repeat; background-size: contain; background-position: center; opacity: 0.04; pointer-events: none; z-index: 99; transform: translate(-30%, -50%) rotate(-15deg);\"\u003e\u003c\/div\u003e\n\u003c!-- Header - Stile Componentistica RF Avanzata (Fondo Antracite Slate \u0026 Dettaglio Cyan) --\u003e\u003cdiv style=\"position: relative; padding: 55px 5%; border-bottom: 8px solid #06b6d4; background-color: #1e293b; z-index: 2;\"\u003e\n\u003c!-- Etichetta Categoria --\u003e\u003cdiv style=\"position: absolute; top: 25px; right: 5%; z-index: 10;\"\u003e\u003cdiv style=\"background: #06b6d4; color: #ffffff; font-size: 11px; font-weight: 900; text-transform: uppercase; letter-spacing: 2px; padding: 8px 18px; border-radius: 3px;\"\u003eVALVOLE TERMOIONICHE\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv style=\"position: relative; z-index: 2;\"\u003e\n\u003ch1 style=\"margin: 0 !important; font-size: 42px !important; text-transform: uppercase !important; letter-spacing: -1px !important; font-weight: 900 !important; line-height: 1.1 !important; color: #ffffff;\"\u003eGU74B \/ 4CX800A\u003c\/h1\u003e\n\u003cp style=\"margin: 15px 0 0 !important; font-size: 20px !important; color: #94a3b8; font-weight: 300 !important; text-transform: uppercase !important; letter-spacing: 3px !important;\"\u003eTetrodo di Potenza in Ceramica \/ Metallo Russian NEW Tube\u003c\/p\u003e\n\u003cp style=\"margin: 12px 0 0 !important; font-size: 13px !important; color: #ffffff !important; font-weight: 600 !important; letter-spacing: 2px !important; text-transform: uppercase !important;\"\u003eComponente NOS (New Old Stock) ad Alte Prestazioni – Dissipazione Anodica 800W\u003c\/p\u003e\n\u003cdiv style=\"width: 60px; height: 4px; background: #06b6d4; margin-top: 20px; border-radius: 2px;\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Contenuto --\u003e\u003cdiv style=\"padding: 40px 5%; position: relative; z-index: 2;\"\u003e\n\u003c!-- Box Caratteristiche Salienti - FONDO TRASPARENTE\/QUASI BIANCO --\u003e\u003cdiv style=\"margin-bottom: 35px; border-left: 4px solid #06b6d4; padding: 20px; background-color: #ecfeff; border-radius: 0 8px 8px 0; position: relative; z-index: 2;\"\u003e\n\u003ch2 style=\"color: #0891b2; font-size: 15px; text-transform: uppercase; letter-spacing: 2px; margin: 0 0 10px 0; font-weight: 900;\"\u003eMASSIMA AFFIDABILITÀ RF E LUNGA DURATA\u003c\/h2\u003e\n\u003cp style=\"color: #1e293b; font-size: 15px; margin: 0; line-height: 1.6; font-weight: 500;\"\u003e• \u003cstrong\u003eSOSTITUZIONE DIRETTA:\u003c\/strong\u003e Compatibile al 100% come ricambio plug-and-play per tutti i tubi siglati GU74B e 4CX800A utilizzati nei lineari commerciali di fascia alta e in progetti autocostruiti (Home Made).\u003cbr\u003e\u003cbr\u003e        • \u003cstrong\u003eDISSIPAZIONE DA 800 WATT:\u003c\/strong\u003e Grazie alla robusta struttura in ceramica e metallo, garantisce un indice di dissipazione della piastra nominale di ben 800W, con una linearità eccezionale nei modi SSB e CW.\u003cbr\u003e\u003cbr\u003e        • \u003cstrong\u003eCOMPATIBILITÀ TOP BRAND:\u003c\/strong\u003e Il ricambio ideale e raccomandato per i celebri amplificatori delle serie \u003cstrong\u003eACOM\u003c\/strong\u003e (1000, 1006, 1010, 2000A) e \u003cstrong\u003eALPHA\u003c\/strong\u003e (99, 91B, 8100).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Descrizione Prodotto --\u003e\u003cdiv style=\"margin-bottom: 40px; background: transparent; position: relative; z-index: 2;\"\u003e\n\u003ch2 style=\"color: #1e293b; font-size: 26px; margin-bottom: 15px; border-bottom: 2px solid #e2e8f0; padding-bottom: 10px; text-transform: uppercase; letter-spacing: 1px;\"\u003ePrestazioni e Linearità al Vertice\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px; color: #475569; line-height: 1.7; text-align: justify; margin-bottom: 20px;\"\u003eI tetrodi di potenza ceramici \u003cstrong\u003eGU74B \/ 4CX800A\u003c\/strong\u003e di produzione russa rappresentano l'eccellenza tecnologica nella preamplificazione e amplificazione di potenza RF. Con un input di 1200 Watt quando impiegato come amplificatore di potenza lineare, il tubo produce in modo assolutamente conservativo \u003cstrong\u003e750W PEP in SSB\u003c\/strong\u003e e \u003cstrong\u003e750 Watt Key-Down in CW\u003c\/strong\u003e. Se utilizzato in amplificatori moderni dotati di circuiti di sintonizzazione automatica, vuoto e sistemi avanzati di protezione del tubo, la GU74B è in grado di esprimere una potenza significativamente superiore garantendo al contempo una lunghissima vita operativa. Le sue caratteristiche ne consentono l'uso ottimale sia come amplificatore RF con amplificazione di rete sia nel servizio con griglia a massa.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Box Tecnici Affiancati - FONDO BIANCO PURO --\u003e\u003cdiv style=\"width: 100%; margin-bottom: 40px; position: relative; z-index: 2;\"\u003e\n\u003cdiv style=\"width: 47%; float: left; background-color: #ffffff; border: 1px solid #e2e8f0; padding: 20px; border-radius: 8px; border-top: 5px solid #1e293b; box-sizing: border-box;\"\u003e\n\u003ch3 style=\"color: #1e293b; font-size: 11px; text-transform: uppercase; margin: 0 0 8px 0; font-weight: bold; letter-spacing: 1px;\"\u003eDISSIPAZIONE PIASTRA\u003c\/h3\u003e\n\u003cp style=\"font-size: 22px; font-weight: 800; color: #06b6d4; margin: 0;\"\u003e800 Watt\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"width: 47%; float: right; background-color: #ffffff; border: 1px solid #e2e8f0; padding: 20px; border-radius: 8px; border-top: 5px solid #06b6d4; box-sizing: border-box;\"\u003e\n\u003ch3 style=\"color: #06b6d4; font-size: 11px; text-transform: uppercase; margin: 0 0 8px 0; font-weight: bold; letter-spacing: 1px;\"\u003eTECNOLOGIA\u003c\/h3\u003e\n\u003cp style=\"font-size: 22px; font-weight: 800; color: #1e293b; margin: 0;\"\u003eCeramica \/ Metallo (NOS)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"clear: both;\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Tabella Specifiche Tecnica - STRUTTURA MINIMALISTA E TRASPARENTE --\u003e\u003cdiv style=\"background-color: transparent; position: relative; z-index: 2;\"\u003e\n\u003ch3 style=\"color: #1e293b; font-size: 18px; margin: 0 0 15px 0; text-transform: uppercase; font-weight: 800; letter-spacing: 1px;\"\u003eSpecifiche e Codici di Riferimento\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px; background-color: #ffffff; border: 1px solid #e2e8f0;\"\u003e\n\u003cthead\u003e\u003ctr style=\"border-bottom: 2px solid #1e293b; text-align: left; background-color: #f8fafc;\"\u003e\n\u003cth style=\"padding: 12px 10px; color: #1e293b; font-weight: bold;\"\u003eParametro \/ Identificativo\u003c\/th\u003e\n\u003cth style=\"padding: 12px 10px; color: #1e293b; font-weight: bold;\"\u003eSpecifiche di Vendita\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 10px; color: #1e293b; font-weight: bold; border-bottom: 1px solid #e2e8f0;\"\u003eID Produttore \/ Parte DXE\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 10px; color: #475569; border-bottom: 1px solid #e2e8f0;\"\u003eDXE-GU74B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fbfbfc;\"\u003e\n\u003ctd style=\"padding: 12px 10px; color: #1e293b; font-weight: bold; border-bottom: 1px solid #e2e8f0;\"\u003eTipo di Ricambio\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 10px; color: #475569; border-bottom: 1px solid #e2e8f0;\"\u003eValvola termoionica \/ Tubo amplificatore di potenza\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 10px; color: #1e293b; font-weight: bold; border-bottom: 1px solid #e2e8f0;\"\u003eLinea di Prodotto\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 10px; color: #475569; border-bottom: 1px solid #e2e8f0;\"\u003eTetrodi di potenza in ceramica GU74B \/ 4CX800A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fbfbfc;\"\u003e\n\u003ctd style=\"padding: 12px 10px; color: #1e293b; font-weight: bold; border-bottom: 1px solid #e2e8f0;\"\u003eOutput Conservativo (SSB\/CW)\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 10px; color: #475569; border-bottom: 1px solid #e2e8f0;\"\u003e750W PEP SSB \/ 750W Key-Down CW (con 1200W Input)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 10px; color: #1e293b; font-weight: bold; border-bottom: 1px solid #e2e8f0;\"\u003eCompatibilità Amplificatori Alpha\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 10px; color: #475569; border-bottom: 1px solid #e2e8f0;\"\u003eAlpha 99, Alpha 91B, Alpha 8100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fbfbfc;\"\u003e\n\u003ctd style=\"padding: 12px 10px; color: #1e293b; font-weight: bold; border-bottom: 1px solid #e2e8f0;\"\u003eCompatibilità Amplificatori Acom\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 10px; color: #475569; border-bottom: 1px solid #e2e8f0;\"\u003eACOM 1000, ACOM 1006, ACOM 1010, ACOM 2000A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 10px; color: #1e293b; font-weight: bold; border-bottom: 1px solid #e2e8f0;\"\u003eQuantità confezione\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 10px; color: #475569; border-bottom: 1px solid #e2e8f0;\"\u003eVenduta singolarmente\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Footer --\u003e\u003cdiv style=\"background-color: #1e293b; padding: 25px 5%; text-align: center; border-top: 5px solid #06b6d4; position: relative; z-index: 2;\"\u003e\u003cp style=\"margin: 0; color: #ffffff; font-size: 12px; letter-spacing: 2px; font-weight: bold; text-transform: uppercase;\"\u003eHamRadioShop | Specialisti in Componentistica RF, Valvole di Ricambio e Assistenza\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"HAMRADIOSHOP","offers":[{"title":"Default Title","offer_id":51684702617946,"sku":"GU74B-4CX800","price":459.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/2113\/9290\/files\/12380.jpg?v=1755054214"},{"product_id":"pl-519","title":"Valvola PL519 Pentodo di Potenza per Amplificatori Lineari HF | HRS","description":"\u003cmeta charset=\"UTF-8\"\u003e\u003cdiv style=\"font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; width: 100%; max-width: 900px; margin: 0 auto; border: 1px solid #e2e8f0; background-color: #ffffff; line-height: 1.6; position: relative; overflow: hidden;\"\u003e\n\u003c!-- FILIGRANA SEMPRE IN PRIMO PIANO (z-index: 99) MA TRASPARENTE E PHANTOM --\u003e\u003cdiv style=\"position: absolute; top: 55%; left: 50%; width: 450px; height: 450px; background-image: url('https:\/\/cdn.shopify.com\/s\/files\/1\/0946\/2113\/9290\/files\/hrs_logo_new_sen_za_scritta.png?v=1776699756'); background-repeat: no-repeat; background-size: contain; background-position: center; opacity: 0.04; pointer-events: none; z-index: 99; transform: translate(-30%, -50%) rotate(-15deg);\"\u003e\u003c\/div\u003e\n\u003c!-- Header - Stile Componentistica \/ Valvole di Potenza (Fondo Antracite \u0026 Dettaglio Ambra) --\u003e\u003cdiv style=\"position: relative; padding: 50px 5%; border-bottom: 8px solid #d97706; background-color: #334155; z-index: 2;\"\u003e\n\u003c!-- Etichetta Categoria --\u003e\u003cdiv style=\"position: absolute; top: 25px; right: 5%; z-index: 10;\"\u003e\u003cdiv style=\"background: #d97706; color: #ffffff; font-size: 11px; font-weight: 900; text-transform: uppercase; letter-spacing: 2px; padding: 8px 18px; border-radius: 3px;\"\u003eVALVOLE TERMOIONICHE\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv style=\"position: relative; z-index: 2;\"\u003e\n\u003ch1 style=\"margin: 0 !important; font-size: 36px !important; text-transform: uppercase !important; letter-spacing: -1px !important; font-weight: 900 !important; line-height: 1.1 !important; color: #ffffff;\"\u003ePL519\u003c\/h1\u003e\n\u003cp style=\"margin: 15px 0 0 !important; font-size: 18px !important; color: #fde68a; font-weight: 300 !important; text-transform: uppercase !important; letter-spacing: 3px !important;\"\u003ePentodo di Potenza per Radiofrequenza e Lineari HF\u003c\/p\u003e\n\u003cp style=\"margin: 12px 0 0 !important; font-size: 13px !important; color: #ffffff !important; font-weight: 600 !important; letter-spacing: 2px !important; text-transform: uppercase !important;\"\u003eElevata Corrente di Catodo – Massima Dissipazione Anodica (Equivalente Magnoval)\u003c\/p\u003e\n\u003cdiv style=\"width: 60px; height: 4px; background: #d97706; margin-top: 20px; border-radius: 2px;\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Contenuto --\u003e\u003cdiv style=\"padding: 40px 5%; position: relative; z-index: 2;\"\u003e\n\u003c!-- Box Caratteristiche Salienti - FONDO TRASPARENTE\/QUASI BIANCO --\u003e\u003cdiv style=\"margin-bottom: 35px; border-left: 4px solid #d97706; padding: 20px; background-color: #fffbeb; border-radius: 0 8px 8px 0; position: relative; z-index: 2;\"\u003e\n\u003ch2 style=\"color: #b45309; font-size: 15px; text-transform: uppercase; letter-spacing: 2px; margin: 0 0 10px 0; font-weight: 900;\"\u003eROBUSTEZZA E ALTE PRESTAZIONI RF\u003c\/h2\u003e\n\u003cp style=\"color: #1e293b; font-size: 15px; margin: 0; line-height: 1.6; font-weight: 500;\"\u003e• \u003cstrong\u003eIDEALE PER AMPLIFICATORI LINEARI:\u003c\/strong\u003e Scelta d'elezione per la riparazione o la costruzione di amplificatori lineari HF commerciali (es. Zetagi BV131, BV135, BV2001 MKII) grazie alla sua eccezionale tolleranza ai picchi di potenza.\u003cbr\u003e\u003cbr\u003e        • \u003cstrong\u003eSTRUTTURA RINFORZATA MAGNOVAL:\u003c\/strong\u003e Evoluzione potenziata del modello PL509, offre una maggiore dissipazione termica dell'anodo e tollera correnti catodiche di picco molto elevate.\u003cbr\u003e\u003cbr\u003e        • \u003cstrong\u003eCAPPUCCIO ANODICO SUPERIORE (Top Cap):\u003c\/strong\u003e Progettazione ad alto isolamento per gestire tensioni anodiche transitorie elevate in totale sicurezza.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Descrizione Prodotto --\u003e\u003cdiv style=\"margin-bottom: 40px; background: transparent; position: relative; z-index: 2;\"\u003e\n\u003ch2 style=\"color: #1e293b; font-size: 24px; margin-bottom: 15px; border-bottom: 2px solid #e2e8f0; padding-bottom: 10px; text-transform: uppercase; letter-spacing: 1px;\"\u003eAffidabilità Termoionica per Radioamatori e Laboratori\u003c\/h2\u003e\n\u003cp style=\"font-size: 16px; color: #475569; line-height: 1.7; text-align: justify; margin-bottom: 20px;\"\u003eLa PL519 è un pentodo di potenza a riscaldamento indiretto originariamente progettato per gli stadi di deflessione orizzontale dei televisori a colori, ma che ha trovato il suo naturale terreno d'eccellenza nel mondo della radiofrequenza. Apprezzatissima dai radioamatori e dai tecnici riparatori, questa valvola garantisce un'eccellente linearità di modulazione in banda cittadina (CB) e sulle frequenze HF decametriche, offrendo un rapporto qualità\/prezzo imbattibile nel ripristino della potenza originale dei tuoi apparati e amplificatori vintage o moderni.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- Box Tecnici Affiancati - FONDO BIANCO PURO --\u003e\u003cdiv style=\"width: 100%; margin-bottom: 40px; position: relative; z-index: 2;\"\u003e\n\u003cdiv style=\"width: 47%; float: left; background-color: #ffffff; border: 1px solid #e2e8f0; padding: 20px; border-radius: 8px; border-top: 5px solid #334155; box-sizing: border-box;\"\u003e\n\u003ch3 style=\"color: #334155; font-size: 11px; text-transform: uppercase; margin: 0 0 8px 0; font-weight: bold; letter-spacing: 1px;\"\u003eTENSIONE FILAMENTO\u003c\/h3\u003e\n\u003cp style=\"font-size: 22px; font-weight: 800; color: #1e293b; margin: 0;\"\u003e40 V\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"width: 47%; float: right; background-color: #ffffff; border: 1px solid #e2e8f0; padding: 20px; border-radius: 8px; border-top: 5px solid #d97706; box-sizing: border-box;\"\u003e\n\u003ch3 style=\"color: #d97706; font-size: 11px; text-transform: uppercase; margin: 0 0 8px 0; font-weight: bold; letter-spacing: 1px;\"\u003eDISSIPAZIONE ANODICA MAX\u003c\/h3\u003e\n\u003cp style=\"font-size: 22px; font-weight: 800; color: #d97706; margin: 0;\"\u003e35 W (Continui)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"clear: both;\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Tabella Specifiche Tecnica - STRUTTURA MINIMALISTA E TRASPARENTE --\u003e\u003cdiv style=\"background-color: transparent; position: relative; z-index: 2;\"\u003e\n\u003ch3 style=\"color: #1e293b; font-size: 18px; margin: 0 0 15px 0; text-transform: uppercase; font-weight: 800; letter-spacing: 1px;\"\u003eSpecifiche Tecniche di Riferimento\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px; background-color: #ffffff; border: 1px solid #e2e8f0;\"\u003e\n\u003cthead\u003e\u003ctr style=\"border-bottom: 2px solid #334155; text-align: left; background-color: #f8fafc;\"\u003e\n\u003cth style=\"padding: 12px 10px; color: #334155; font-weight: bold;\"\u003eParametro Fisico \/ Elettronico\u003c\/th\u003e\n\u003cth style=\"padding: 12px 10px; color: #334155; font-weight: bold;\"\u003eValore di Targa\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 10px; color: #1e293b; font-weight: bold; border-bottom: 1px solid #e2e8f0;\"\u003eTipo di Valvola\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 10px; color: #475569; border-bottom: 1px solid #e2e8f0;\"\u003ePentodo di potenza a riscaldamento indiretto\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fbfbfc;\"\u003e\n\u003ctd style=\"padding: 12px 10px; color: #1e293b; font-weight: bold; border-bottom: 1px solid #e2e8f0;\"\u003eCorrente di Filamento (If)\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 10px; color: #475569; border-bottom: 1px solid #e2e8f0;\"\u003e0.3 A (300 mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 10px; color: #1e293b; font-weight: bold; border-bottom: 1px solid #e2e8f0;\"\u003eTensione Anodica Nominale (Va)\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 10px; color: #475569; border-bottom: 1px solid #e2e8f0;\"\u003eFino a 250V (DC) — Picchi impulsivi max 7000V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fbfbfc;\"\u003e\n\u003ctd style=\"padding: 12px 10px; color: #1e293b; font-weight: bold; border-bottom: 1px solid #e2e8f0;\"\u003eCorrente Catodica di Picco (Ik max)\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 10px; color: #475569; border-bottom: 1px solid #e2e8f0;\"\u003e1.5 A (1500 mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px 10px; color: #1e293b; font-weight: bold; border-bottom: 1px solid #e2e8f0;\"\u003eDissipazione Griglia 2 (Pg2)\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 10px; color: #475569; border-bottom: 1px solid #e2e8f0;\"\u003e7 W max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #fbfbfc;\"\u003e\n\u003ctd style=\"padding: 12px 10px; color: #1e293b; font-weight: bold; border-bottom: 1px solid #e2e8f0;\"\u003eZoccolo \/ Base\u003c\/td\u003e\n\u003ctd style=\"padding: 12px 10px; color: #475569; border-bottom: 1px solid #e2e8f0;\"\u003eMagnoval a 9 pin (B9D) con attacco ad anodo superiore\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Footer --\u003e\u003cdiv style=\"background-color: #334155; padding: 25px 5%; text-align: center; border-top: 5px solid #d97706; position: relative; z-index: 2;\"\u003e\u003cp style=\"margin: 0; color: #ffffff; font-size: 12px; letter-spacing: 2px; font-weight: bold; text-transform: uppercase;\"\u003eHamRadioShop | Componentistica e Valvole di Ricambio per Amplificatori RF\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003cp\u003e \u003c\/p\u003e","brand":"HAMRADIOSHOP","offers":[{"title":"Default Title","offer_id":54212311581018,"sku":"PL519","price":75.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/2113\/9290\/files\/IMG_9956.jpg?v=1780073038"}],"url":"https:\/\/hamradioshop.it\/es\/collections\/valvole-1.oembed","provider":"HAMRADIOSHOP","version":"1.0","type":"link"}