{"id":251,"date":"2017-01-02T22:48:30","date_gmt":"2017-01-02T21:48:30","guid":{"rendered":"http:\/\/www.iz2zph.eu\/?page_id=251"},"modified":"2018-02-07T10:22:42","modified_gmt":"2018-02-07T09:22:42","slug":"efhw-monobanda","status":"publish","type":"post","link":"https:\/\/www.iz2zph.eu\/?p=251","title":{"rendered":"EFHW monobanda"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-258 size-full aligncenter\" src=\"http:\/\/www.iz2zph.eu\/wp-content\/uploads\/2016\/07\/efhw_mono.jpg\" alt=\"efhw_mono\" width=\"292\" height=\"177\" srcset=\"https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2016\/07\/efhw_mono.jpg 292w, https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2016\/07\/efhw_mono-247x150.jpg 247w, https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2016\/07\/efhw_mono-150x91.jpg 150w\" sizes=\"(max-width: 292px) 100vw, 292px\" \/><\/p>\n<hr \/>\n<p>Questa \u00e8 l&#8217;unica applicazione dove \u00e8 consigliato l&#8217;uso dei toroidi in polvere di ferro anzich\u00e8 in ferrite, almeno fino a circa 200\/300w. Oltre questa potenza \u00e8 preferibile utilizzare avvolgimenti in aria. Per il condensatore o componenti\u00a0ceramici ad alta tensione (almeno 3KV) o specifici per RF (da 5KV in su) oppure uno spezzone di cavo coassiale (mediamente 100pf\/metro). Quest&#8217;ultima \u00e8 sempre la soluzione consigliata, anche fino a 1kw. Si consiglia l&#8217;uso di RG-316 per compattezza. In alternativa RG-174 o RG-223. In mancanza d&#8217;altro RG-58 di alta qualit\u00e0. No cavi in foam.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2062 aligncenter\" src=\"https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/efhw-monobanda.png\" alt=\"\" width=\"574\" height=\"737\" srcset=\"https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/efhw-monobanda.png 574w, https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/efhw-monobanda-234x300.png 234w, https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/efhw-monobanda-100x128.png 100w, https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/efhw-monobanda-150x193.png 150w, https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/efhw-monobanda-200x257.png 200w, https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/efhw-monobanda-300x385.png 300w, https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/efhw-monobanda-450x578.png 450w\" sizes=\"(max-width: 574px) 100vw, 574px\" \/><\/p>\n<p style=\"text-align: center;\">\u00a0maggiori dettagli\u00a0<a href=\"https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/efhw-monobanda.pdf\">efhw monobanda\u00a0<\/a><\/p>\n<p>per un approccio pi\u00f9 scientifico \u00e8 possibile aiutarsi con il sw Tunehalf.exe \u00a0scritto da\u00a0G4FGQ (SK).<\/p>\n<p>Esempio: calcolo per una 20M<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2074 aligncenter\" src=\"https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/tunehalf.png\" alt=\"\" width=\"647\" height=\"311\" srcset=\"https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/tunehalf.png 647w, https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/tunehalf-300x144.png 300w, https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/tunehalf-100x48.png 100w, https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/tunehalf-150x72.png 150w, https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/tunehalf-200x96.png 200w, https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/tunehalf-450x216.png 450w, https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/tunehalf-600x288.png 600w\" sizes=\"(max-width: 647px) 100vw, 647px\" \/><\/p>\n<hr \/>\n<p style=\"text-align: center;\">Versione &#8220;alternativa&#8221; in 20M di PD7MAA<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2065 aligncenter\" src=\"https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/halfwave.png\" alt=\"\" width=\"358\" height=\"347\" srcset=\"https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/halfwave.png 358w, https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/halfwave-300x291.png 300w, https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/halfwave-100x97.png 100w, https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/halfwave-150x145.png 150w, https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/halfwave-200x194.png 200w\" sizes=\"(max-width: 358px) 100vw, 358px\" \/><\/p>\n<pre><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-2070 aligncenter\" src=\"https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/efhw-pd7maa.jpg\" alt=\"\" width=\"484\" height=\"330\" srcset=\"https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/efhw-pd7maa.jpg 484w, https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/efhw-pd7maa-300x205.jpg 300w, https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/efhw-pd7maa-100x68.jpg 100w, https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/efhw-pd7maa-150x102.jpg 150w, https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/efhw-pd7maa-200x136.jpg 200w, https:\/\/www.iz2zph.eu\/wp-content\/uploads\/2017\/01\/efhw-pd7maa-450x307.jpg 450w\" sizes=\"(max-width: 484px) 100vw, 484px\" \/><\/pre>\n<hr \/>\n<p><em>Grazie per l&#8217;ispirazione a <strong>PI4TIL PA1SSB AA5TB PD7MAA<\/strong><\/em><\/p>\n<p>lavori in corso<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Questa \u00e8 l&#8217;unica applicazione dove \u00e8 consigliato l&#8217;uso dei toroidi in polvere di ferro anzich\u00e8 in ferrite, almeno fino a circa 200\/300w. Oltre questa potenza \u00e8 preferibile utilizzare avvolgimenti in aria. Per il condensatore o componenti\u00a0ceramici ad alta tensione (almeno<span class=\"ellipsis\">&hellip;<\/span><\/p>\n<div class=\"read-more\"><a href=\"https:\/\/www.iz2zph.eu\/?p=251\">Continua a leggere <span class=\"screen-reader-text\">EFHW monobanda<\/span><span class=\"meta-nav\"> &#8250;<\/span><\/a><\/div>\n<p><!-- end of .read-more --><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,8,92,93],"tags":[83,85,86],"class_list":["post-251","post","type-post","status-publish","format-standard","hentry","category-antenne","category-endfed-halfwave","category-hf","category-portatile","tag-efhw","tag-efhw-monobanda","tag-endfed-halfwave-monobanda"],"_links":{"self":[{"href":"https:\/\/www.iz2zph.eu\/index.php?rest_route=\/wp\/v2\/posts\/251"}],"collection":[{"href":"https:\/\/www.iz2zph.eu\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.iz2zph.eu\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.iz2zph.eu\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iz2zph.eu\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=251"}],"version-history":[{"count":27,"href":"https:\/\/www.iz2zph.eu\/index.php?rest_route=\/wp\/v2\/posts\/251\/revisions"}],"predecessor-version":[{"id":2076,"href":"https:\/\/www.iz2zph.eu\/index.php?rest_route=\/wp\/v2\/posts\/251\/revisions\/2076"}],"wp:attachment":[{"href":"https:\/\/www.iz2zph.eu\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=251"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iz2zph.eu\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=251"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iz2zph.eu\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=251"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}