{"id":1102,"date":"2026-01-17T19:29:25","date_gmt":"2026-01-17T18:29:25","guid":{"rendered":"https:\/\/f8kfj.ukpnet.org\/?page_id=1102"},"modified":"2026-04-15T09:52:19","modified_gmt":"2026-04-15T07:52:19","slug":"digipeater-aprs-f8kfj-4","status":"publish","type":"page","link":"https:\/\/f8kfj.fr\/index.php\/digipeater-aprs-f8kfj-4\/","title":{"rendered":"Digipeater APRS F8KFJ-4"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">Digipeater APRS F8KFJ-4<\/h1>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile is-image-fill-element\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"408\" src=\"https:\/\/f8kfj.fr\/wp-content\/uploads\/2026\/01\/PXL_20260117_154955338-scaled-e1768672485228-1024x408.jpg\" alt=\"\" class=\"wp-image-1063 size-full\" style=\"object-position:35% 57%\" srcset=\"https:\/\/f8kfj.fr\/wp-content\/uploads\/2026\/01\/PXL_20260117_154955338-scaled-e1768672485228-1024x408.jpg 1024w, https:\/\/f8kfj.fr\/wp-content\/uploads\/2026\/01\/PXL_20260117_154955338-scaled-e1768672485228-300x120.jpg 300w, https:\/\/f8kfj.fr\/wp-content\/uploads\/2026\/01\/PXL_20260117_154955338-scaled-e1768672485228-768x306.jpg 768w, https:\/\/f8kfj.fr\/wp-content\/uploads\/2026\/01\/PXL_20260117_154955338-scaled-e1768672485228-1536x612.jpg 1536w, https:\/\/f8kfj.fr\/wp-content\/uploads\/2026\/01\/PXL_20260117_154955338-scaled-e1768672485228-2048x816.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p><\/p>\n\n\n\n<p>Situ\u00e9 au c\u0153ur du Cher, le digipeater <strong>F8KFJ-4<\/strong> est une infrastructure cl\u00e9 du <strong>Bourges Radio Club<\/strong>. Il permet d&rsquo;\u00e9tendre la port\u00e9e des communications num\u00e9riques locales et de relier les stations mobiles au r\u00e9seau mondial.<br><\/p>\n<\/div><\/div>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Qu&rsquo;est-ce que l&rsquo;APRS ?<\/h2>\n\n\n\n<p>L\u2019<strong>APRS<\/strong> (<em>Automatic Packet Reporting System<\/em>) est un syst\u00e8me de radiocommunication num\u00e9rique utilis\u00e9 par les radioamateurs pour partager des informations d&rsquo;int\u00e9r\u00eat local en temps r\u00e9el. Contrairement au trafic vocal, l&rsquo;APRS transmet des \u00ab\u00a0paquets\u00a0\u00bb de donn\u00e9es.<\/p>\n\n\n\n<p>Gr\u00e2ce \u00e0 ce syst\u00e8me, on peut :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Suivre des mobiles :<\/strong> Visualiser la position GPS de v\u00e9hicules ou de randonneurs.<\/li>\n\n\n\n<li><strong>Transmettre la m\u00e9t\u00e9o :<\/strong> Diffuser les relev\u00e9s de stations automatiques (temp\u00e9rature, vent, pression).<\/li>\n\n\n\n<li><strong>Envoyer des messages :<\/strong> \u00c9changer des messages textuels courts entre stations ou vers Internet.<\/li>\n\n\n\n<li><strong>Diffuser des bulletins :<\/strong> Informer sur les fr\u00e9quences des relais locaux ou les \u00e9v\u00e9nements du club.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Le Packet Radio et le protocole AX.25<\/h3>\n\n\n\n<p>L&rsquo;APRS repose sur une technologie plus ancienne appel\u00e9e <strong>Packet Radio<\/strong>. Ce mode utilise le protocole <strong>AX.25<\/strong> (une variante amateur du X.25) pour d\u00e9couper l&rsquo;information en petits paquets num\u00e9riques. \u00c0 Bourges, le digipeater F8KFJ-4 re\u00e7oit ces paquets \u00e0 <strong>1200 bauds<\/strong> et les r\u00e9\u00e9met instantan\u00e9ment (le \u00ab\u00a0digipeating\u00a0\u00bb) pour qu&rsquo;ils soient capt\u00e9s par d&rsquo;autres stations ou par une passerelle Internet (iGate).<\/p>\n\n\n\n<div class=\"table-container\">\n    <table class=\"radio-table\">\n        <thead>\n            <tr>\n                <th>Relais \/ Indicatif<\/th>\n                <th>Fr\u00e9quences<\/th>\n                <th>Acc\u00e8s \/ Mode<\/th>\n                <th>Localisation<\/th>\n            <\/tr>\n        <\/thead>\n        <tbody>\n            <tr>\n                <td><strong>F8KFJ-4<\/strong><br><small>Digipeater<\/small><\/td>\n                <td>144.800 MHz<br><span class=\"badge shift\">Simplex<\/span><\/td>\n                <td>AFSK<br><span class=\"badge mode-aprs\">APRS<\/span><\/td>\n                <td>JN17EB<br><small>15m (PAR 20W)<\/small><\/td>\n            <\/tr>\n        <\/tbody>\n    <\/table>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Comment nous voir en direct ?<\/h2>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\" style=\"grid-template-columns:66% auto\"><figure class=\"wp-block-media-text__media\"><a href=\"https:\/\/aprs.fi\/#!call=a%2FF8KFJ-4&amp;timerange=3600&amp;tail=3600\" target=\"_blank\" rel=\" noreferrer noopener\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"705\" src=\"https:\/\/f8kfj.fr\/wp-content\/uploads\/2026\/01\/2026-01-17-19_38_02-Clipboard-1024x705.png\" alt=\"\" class=\"wp-image-1111 size-full\" srcset=\"https:\/\/f8kfj.fr\/wp-content\/uploads\/2026\/01\/2026-01-17-19_38_02-Clipboard-1024x705.png 1024w, https:\/\/f8kfj.fr\/wp-content\/uploads\/2026\/01\/2026-01-17-19_38_02-Clipboard-300x207.png 300w, https:\/\/f8kfj.fr\/wp-content\/uploads\/2026\/01\/2026-01-17-19_38_02-Clipboard-768x529.png 768w, https:\/\/f8kfj.fr\/wp-content\/uploads\/2026\/01\/2026-01-17-19_38_02-Clipboard-1536x1058.png 1536w, https:\/\/f8kfj.fr\/wp-content\/uploads\/2026\/01\/2026-01-17-19_38_02-Clipboard.png 1599w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"has-text-align-center\">M\u00eame sans radio, vous pouvez visualiser le trafic capt\u00e9 par notre installation sur les cartes mondiales en ligne : <\/p>\n\n\n\n<p class=\"has-text-align-center\">\ud83d\udc49 <strong><a href=\"https:\/\/aprs.fi\/#!call=a%2FF8KFJ-4&amp;timerange=3600&amp;tail=3600\" target=\"_blank\" rel=\"noreferrer noopener\">Consulter F8KFJ-4 sur APRS.fi<\/a><\/strong><\/p>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Digipeater APRS F8KFJ-4 Situ\u00e9 au c\u0153ur du Cher, le digipeater F8KFJ-4 est une infrastructure cl\u00e9 du Bourges Radio Club. Il permet d&rsquo;\u00e9tendre la port\u00e9e des communications num\u00e9riques locales et de relier les stations mobiles au r\u00e9seau mondial. Qu&rsquo;est-ce que l&rsquo;APRS ? L\u2019APRS (Automatic Packet Reporting System) est un syst\u00e8me de radiocommunication num\u00e9rique utilis\u00e9 par les &#8230; <a title=\"Digipeater APRS F8KFJ-4\" class=\"read-more\" href=\"https:\/\/f8kfj.fr\/index.php\/digipeater-aprs-f8kfj-4\/\" aria-label=\"En savoir plus sur Digipeater APRS F8KFJ-4\">Lire la suite<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1102","page","type-page","status-publish"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Digipeater APRS F8KFJ-4 - Bourges Radio Club F8KFJ<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/f8kfj.fr\/index.php\/digipeater-aprs-f8kfj-4\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Digipeater APRS F8KFJ-4 - Bourges Radio Club F8KFJ\" \/>\n<meta property=\"og:description\" content=\"Digipeater APRS F8KFJ-4 Situ\u00e9 au c\u0153ur du Cher, le digipeater F8KFJ-4 est une infrastructure cl\u00e9 du Bourges Radio Club. Il permet d&rsquo;\u00e9tendre la port\u00e9e des communications num\u00e9riques locales et de relier les stations mobiles au r\u00e9seau mondial. Qu&rsquo;est-ce que l&rsquo;APRS ? L\u2019APRS (Automatic Packet Reporting System) est un syst\u00e8me de radiocommunication num\u00e9rique utilis\u00e9 par les ... 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