<div dir="ltr">É isso mesmo Machado.<div><br></div><div>O que eles querem é um UNUN e não um BALUN.</div><div><br></div><div>João Costa (CT1FBF)</div></div><div class="gmail_extra"><br><div class="gmail_quote">Em 4 de novembro de 2015 12:07, José Machado <span dir="ltr"><<a href="mailto:ct1bat@gmail.com" target="_blank">ct1bat@gmail.com</a>></span> escreveu:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang="PT" link="blue" vlink="purple"><div><p><span style="font-size:12.0pt;font-family:"Calibri","sans-serif"">Exatamente, usamos um UNUN (não balun...) não precisamos de desbalancear nada.<u></u><u></u></span></p><p><span style="font-size:12.0pt;font-family:"Calibri","sans-serif"">“...<u></u><u></u></span></p><p><b><span style="font-size:12.0pt;font-family:"Calibri","sans-serif"">How to make the “magic box” (1:50 to 1:60 autotransformer)<u></u><u></u></span></b></p><p><b><span style="font-size:12.0pt;font-family:"Calibri","sans-serif"">The “magic box” holds an HF autotransformer (UNUN) that transforms 3000 Ohm to 50 Ohms. The primary : secundary winding ratio is 1:7 or 1:8. ...”<u></u><u></u></span></b></p><p><span style="font-size:12.0pt;font-family:"Calibri","sans-serif""><u></u> <u></u></span></p><p><span style="font-size:12.0pt;font-family:"Calibri","sans-serif"">Aqui vai a minha End Fed:<u></u><u></u></span></p><p><span style="font-size:12.0pt;font-family:"Calibri","sans-serif""><u></u> <u></u></span></p><p><span style="font-size:12.0pt;font-family:"Calibri","sans-serif"">1 cana de fibra de vidro, 7m (Decathlon €14)<u></u><u></u></span></p><p><span style="font-size:12.0pt;font-family:"Calibri","sans-serif"">22,5m de fio multi 0,25mm (de um cabo elétrico 2 cond aberto)<u></u><u></u></span></p><p><span style="font-size:12.0pt;font-family:"Calibri","sans-serif"">1 transformador 1:64 (custo do toroide 114:43 +€4)<u></u><u></u></span></p><p><span style="font-size:12.0pt;font-family:"Calibri","sans-serif"">1 sintonizador T-Match, construído nas “aulas” da Tertúlia (€10)<u></u><u></u></span></p><p><span style="font-size:12.0pt;font-family:"Calibri","sans-serif""><u></u> <u></u></span></p><p><span style="font-size:12.0pt;font-family:"Calibri","sans-serif"">Peso:<1Kg<u></u><u></u></span></p><p><span style="font-size:12.0pt;font-family:"Calibri","sans-serif"">Bandas: dos 10 aos 80 (160 tb lá vai com 1/8 onda(?!?), mas é tempo perdido que não anda lá ninguém...)<u></u><u></u></span></p><p><span style="font-size:12.0pt;font-family:"Calibri","sans-serif""><u></u> <u></u></span></p><p><span style="font-size:12.0pt;font-family:"Calibri","sans-serif"">73 from<u></u><u></u></span></p><p><span style="font-size:12.0pt;font-family:"Calibri","sans-serif"">José Machado - CT1BAT<u></u><u></u></span></p></div>
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