{"id":476,"date":"2013-03-03T15:25:28","date_gmt":"2013-03-03T15:25:28","guid":{"rendered":"http:\/\/ava.upuaut.net\/?p=476"},"modified":"2013-03-03T15:34:14","modified_gmt":"2013-03-03T15:34:14","slug":"aprs-floater-launch-is-go-or-not","status":"publish","type":"post","link":"https:\/\/ava.upuaut.net\/?p=476","title":{"rendered":"APRS Floater Launch is Go&#8230; or not"},"content":{"rendered":"<p>Having completed the code for the <a title=\"Preparing for a European Floater\" href=\"http:\/\/ava.upuaut.net\/?p=471\">APRS\/RTTY<\/a> Payload I got round to making a container and an antenna for it. The 70cms antenna was just going to be the normal 1\/4 wave however the 2 meter one had to be slightly different. I settled on a Slim Jim made from twin core feeder wire. Using <a href=\"http:\/\/www.m0ukd.com\/Calculators\/Slim_Jim\/index.php\">M0UKD&#8217;s Slim Jim Calculator<\/a> I quickly made one up and made a choke out of some 40mm PVC tubing.<\/p>\n<p>The estimates for battery life were a whopping 70 hours for each pair of AA&#8217;s in the payload (The operating battery voltage had to be &gt; 3V or the efficiencies on the 5V stepup started to cause issues). In the end I decided on 3 pairs of AA energizers. Enough for continuous TX for about a week.<\/p>\n<p><a href=\"http:\/\/ava.upuaut.net\/wp-content\/uploads\/2013\/03\/IMG_1133.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-477\" alt=\"IMG_1133\" src=\"\/\/ava.upuaut.net\/wp-content\/uploads\/2013\/03\/IMG_1133-1024x768.jpg\" width=\"620\" height=\"465\" srcset=\"https:\/\/ava.upuaut.net\/wp-content\/uploads\/2013\/03\/IMG_1133-1024x768.jpg 1024w, https:\/\/ava.upuaut.net\/wp-content\/uploads\/2013\/03\/IMG_1133-300x225.jpg 300w\" sizes=\"auto, (max-width: 620px) 100vw, 620px\" \/><\/a><\/p>\n<p>Here you can see the battery pack on the left and the transmitters on the right.<a href=\"http:\/\/ava.upuaut.net\/wp-content\/uploads\/2013\/03\/IMG_1133.jpg\"><br \/>\n<\/a><a href=\"http:\/\/ava.upuaut.net\/wp-content\/uploads\/2013\/03\/IMG_1143.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-478\" alt=\"IMG_1143\" src=\"\/\/ava.upuaut.net\/wp-content\/uploads\/2013\/03\/IMG_1143-e1362324011701-768x1024.jpg\" width=\"620\" height=\"826\" srcset=\"https:\/\/ava.upuaut.net\/wp-content\/uploads\/2013\/03\/IMG_1143-e1362324011701-768x1024.jpg 768w, https:\/\/ava.upuaut.net\/wp-content\/uploads\/2013\/03\/IMG_1143-e1362324011701-225x300.jpg 225w\" sizes=\"auto, (max-width: 620px) 100vw, 620px\" \/><\/a>All fastened up note slim jim hanging below. Full build pics <a href=\"https:\/\/plus.google.com\/photos\/118244444241111963790\/albums\/5851139201894660721?banner=pwa\">&gt;here&lt;<\/a><\/p>\n<p>It was all ready to go, just plug in and launch then a spanner in the works. Apparently the operation of amateur radio equipment in the air isn&#8217;t permitted in France. Maybe. With the situation becoming unclear and the launch window rapidly approaching I made the decision not to launch the payload. Instead we&#8217;d launch a PAVA board with the same code on to test the Geofencing.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Having completed the code for the APRS\/RTTY Payload I got round to making a container and an antenna for it. The 70cms antenna was just going to be the normal 1\/4 wave however the 2 meter one had to be &hellip;<\/p>\n<p class=\"read-more\"><a href=\"https:\/\/ava.upuaut.net\/?p=476\">Read more &raquo;<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-476","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/ava.upuaut.net\/index.php?rest_route=\/wp\/v2\/posts\/476","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ava.upuaut.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ava.upuaut.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ava.upuaut.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ava.upuaut.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=476"}],"version-history":[{"count":2,"href":"https:\/\/ava.upuaut.net\/index.php?rest_route=\/wp\/v2\/posts\/476\/revisions"}],"predecessor-version":[{"id":481,"href":"https:\/\/ava.upuaut.net\/index.php?rest_route=\/wp\/v2\/posts\/476\/revisions\/481"}],"wp:attachment":[{"href":"https:\/\/ava.upuaut.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=476"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ava.upuaut.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=476"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ava.upuaut.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=476"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}