{"id":1415,"date":"2021-05-05T17:39:06","date_gmt":"2021-05-05T15:39:06","guid":{"rendered":"http:\/\/f6kmf.fr\/?p=1415"},"modified":"2021-05-05T17:39:08","modified_gmt":"2021-05-05T15:39:08","slug":"yagi-bi-bandes","status":"publish","type":"post","link":"https:\/\/f6kmf.fr\/index.php\/2021\/05\/05\/yagi-bi-bandes\/","title":{"rendered":"Yagi bi-bandes"},"content":{"rendered":"\n<p style=\"text-align:right\"><strong>Une r\u00e9alisation de Jean-Marie F1FDM<\/strong><\/p>\n\n\n\n<p class=\"has-background has-very-light-gray-background-color\">Je ne r\u00e9siste pas \u00e0 l&rsquo;envie de partager avec vous cette belle r\u00e9alisation de Jean-Marie F1FDM.<br>Cette Yagi Bi-bandes comporte 5 \u00e9l\u00e9ments 144 MHz et 8 \u00e9l\u00e9ments 432 MHz fix\u00e9s dans le m\u00eame plan. <br>Le boom mesure 1,50 m et cette antenne ne n\u00e9cessite qu&rsquo;un seul c\u00e2ble coaxial d&rsquo;alimentation.<br>C&rsquo;est un mod\u00e8le de DK7ZB (redessin\u00e9 par SQ9VPA) r\u00e9alis\u00e9 avec du tube carr\u00e9 de 25mm, du tube rond de 12mm pour le radiateur et du tube de 10mm pour les \u00e9l\u00e9ments.<br>Pour les dimensions, voir l&rsquo;excellent site de DK7ZB <a href=\"https:\/\/www.qsl.net\/dk7zb\/Duoband\/5+8_2m-70cm.htm\">https:\/\/www.qsl.net\/dk7zb\/Duoband\/5+8_2m-70cm.htm<\/a><br><\/p>\n\n\n\n<table class=\"wp-block-table\"><tbody><tr><td><strong>Bandes<\/strong><\/td><td><strong>Gain<\/strong><\/td><td><strong>F\/B<\/strong><\/td><td><strong>Angle H \u00e0 3dB<\/strong><\/td><td><strong>Angle V \u00e0 3dB<\/strong><\/td><\/tr><tr><td>144,4<\/td><td>8.45<\/td><td>24<\/td><td>51<\/td><td>64<\/td><\/tr><tr><td>432<\/td><td>8.86<\/td><td>14<\/td><td>28<\/td><td>54<\/td><\/tr><\/tbody><\/table>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"567\" height=\"498\" src=\"https:\/\/f6kmf.fr\/wp-content\/uploads\/2021\/05\/Yagi-bibande-DK7ZB-4.jpg\" alt=\"\" class=\"wp-image-1417\" srcset=\"https:\/\/f6kmf.fr\/wp-content\/uploads\/2021\/05\/Yagi-bibande-DK7ZB-4.jpg 567w, https:\/\/f6kmf.fr\/wp-content\/uploads\/2021\/05\/Yagi-bibande-DK7ZB-4-300x263.jpg 300w\" sizes=\"auto, (max-width: 567px) 100vw, 567px\" \/><\/figure>\n\n\n\n<p class=\"has-background has-cyan-bluish-gray-background-color\">Une r\u00e9alisation tr\u00e8s soign\u00e9e, pour un co\u00fbt d&rsquo;environ 40\u20ac, tout le mat\u00e9riel (sauf les isolateurs pour les \u00e9l\u00e9ments) sont disponibles au magasin de bricolage du coin.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/f6kmf.fr\/wp-content\/uploads\/2021\/05\/Yagi-bibande-DK7ZB-1-768x1024.jpg\" alt=\"\" class=\"wp-image-1419\" srcset=\"https:\/\/f6kmf.fr\/wp-content\/uploads\/2021\/05\/Yagi-bibande-DK7ZB-1-768x1024.jpg 768w, https:\/\/f6kmf.fr\/wp-content\/uploads\/2021\/05\/Yagi-bibande-DK7ZB-1-225x300.jpg 225w, https:\/\/f6kmf.fr\/wp-content\/uploads\/2021\/05\/Yagi-bibande-DK7ZB-1.jpg 1024w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/figure>\n\n\n\n<p class=\"has-background has-light-green-cyan-background-color\">D\u00e9tail de la boite du radiateur (coffret de raccordement \u00e9lectrique avec presse-\u00e9toupe), la self de choc 50-Ohm est compos\u00e9e de 40cm de RG-188 (ou \u00e9quivalent) sur un manchon PVC de 16-20mm.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/f6kmf.fr\/wp-content\/uploads\/2021\/05\/Choke-balun-dip\u00f4le-1024x576.jpg\" alt=\"\" class=\"wp-image-1420\" srcset=\"https:\/\/f6kmf.fr\/wp-content\/uploads\/2021\/05\/Choke-balun-dip\u00f4le-1024x576.jpg 1024w, https:\/\/f6kmf.fr\/wp-content\/uploads\/2021\/05\/Choke-balun-dip\u00f4le-300x169.jpg 300w, https:\/\/f6kmf.fr\/wp-content\/uploads\/2021\/05\/Choke-balun-dip\u00f4le-768x432.jpg 768w, https:\/\/f6kmf.fr\/wp-content\/uploads\/2021\/05\/Choke-balun-dip\u00f4le.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"has-background has-pale-pink-background-color\"><strong>Un seul c\u00e2ble, comment \u00e7a marche ?<\/strong><br>Le dip\u00f4le 144Mhz est aliment\u00e9 \u00ab\u00a0normalement\u00a0\u00bb, l&rsquo;\u00e9l\u00e9ment 432Mhz le plus proche de ce dip\u00f4le va \u00eatre excit\u00e9 par induction et se comporter comme un dip\u00f4le 432Mhz.<\/p>\n\n\n\n<p class=\"has-background has-very-light-gray-background-color\">Pour information, voil\u00e0 une r\u00e9alisation commerciale de la m\u00eame antenne, sauf qu&rsquo;elle est r\u00e9alis\u00e9e en \u00ab\u00a0tout \u00e0 la masse\u00a0\u00bb et que le raccordement du dip\u00f4le n&rsquo;est pas tr\u00e8s s\u00e9rieux &#8230;. pour un co\u00fbt d&rsquo;une centaine d&rsquo;\u20ac.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/f6kmf.fr\/wp-content\/uploads\/2021\/05\/yagi_plg2-768x1024.jpg\" alt=\"\" class=\"wp-image-1421\" srcset=\"https:\/\/f6kmf.fr\/wp-content\/uploads\/2021\/05\/yagi_plg2-768x1024.jpg 768w, https:\/\/f6kmf.fr\/wp-content\/uploads\/2021\/05\/yagi_plg2-225x300.jpg 225w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/f6kmf.fr\/wp-content\/uploads\/2021\/05\/yagi_plg1-768x1024.jpg\" alt=\"\" class=\"wp-image-1423\" srcset=\"https:\/\/f6kmf.fr\/wp-content\/uploads\/2021\/05\/yagi_plg1-768x1024.jpg 768w, https:\/\/f6kmf.fr\/wp-content\/uploads\/2021\/05\/yagi_plg1-225x300.jpg 225w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Une r\u00e9alisation de Jean-Marie F1FDM Je ne r\u00e9siste pas \u00e0 l&rsquo;envie de partager avec vous cette belle r\u00e9alisation de Jean-Marie<\/p>\n","protected":false},"author":4,"featured_media":1425,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[11,21,14],"tags":[],"class_list":["post-1415","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-activites-radio","category-antenne","category-realisations"],"_links":{"self":[{"href":"https:\/\/f6kmf.fr\/index.php\/wp-json\/wp\/v2\/posts\/1415","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/f6kmf.fr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/f6kmf.fr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/f6kmf.fr\/index.php\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/f6kmf.fr\/index.php\/wp-json\/wp\/v2\/comments?post=1415"}],"version-history":[{"count":3,"href":"https:\/\/f6kmf.fr\/index.php\/wp-json\/wp\/v2\/posts\/1415\/revisions"}],"predecessor-version":[{"id":1426,"href":"https:\/\/f6kmf.fr\/index.php\/wp-json\/wp\/v2\/posts\/1415\/revisions\/1426"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/f6kmf.fr\/index.php\/wp-json\/wp\/v2\/media\/1425"}],"wp:attachment":[{"href":"https:\/\/f6kmf.fr\/index.php\/wp-json\/wp\/v2\/media?parent=1415"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/f6kmf.fr\/index.php\/wp-json\/wp\/v2\/categories?post=1415"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/f6kmf.fr\/index.php\/wp-json\/wp\/v2\/tags?post=1415"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}