{"id":683,"date":"2016-09-13T10:06:24","date_gmt":"2016-09-13T08:06:24","guid":{"rendered":"http:\/\/www.ik0vve.net\/?p=683"},"modified":"2016-09-13T10:50:30","modified_gmt":"2016-09-13T08:50:30","slug":"136-khz-finally","status":"publish","type":"post","link":"https:\/\/www.ik0vve.net\/?p=683","title":{"rendered":"136 kHz&#8230; finally!"},"content":{"rendered":"<p style=\"text-align: justify;\">Last night was my second &#8220;serious&#8221; TX test on 136 kHz, transmitted Opera32 mode after an upgrade to the matcher.<\/p>\n<p style=\"text-align: justify;\">To tune the antenna on 136 kHz I&#8217;ve build a couple of inductors over two hand cleaner soap bins. The first one was\u00a0wound with enameled copper wire of about 1 mm diameter, the second with PVC copper wire of 1.5 mm diameter.<\/p>\n<p style=\"text-align: justify;\">The first has an inductance of 2.2 mH while the second is around 400 uH.<img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-686\" src=\"http:\/\/www.ik0vve.net\/wp-content\/uploads\/2016\/09\/20160910_231203-1024x614.jpg\" alt=\"20160910_231203\" width=\"532\" height=\"319\" srcset=\"https:\/\/www.ik0vve.net\/wp-content\/uploads\/2016\/09\/20160910_231203-1024x614.jpg 1024w, https:\/\/www.ik0vve.net\/wp-content\/uploads\/2016\/09\/20160910_231203-300x180.jpg 300w, https:\/\/www.ik0vve.net\/wp-content\/uploads\/2016\/09\/20160910_231203-150x90.jpg 150w, https:\/\/www.ik0vve.net\/wp-content\/uploads\/2016\/09\/20160910_231203-400x240.jpg 400w\" sizes=\"(max-width: 532px) 100vw, 532px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p>Inserting one bin into the other I&#8217;ve reached the needed inductance to work with my antenna on 2200 meters.\u00a0<a href=\"http:\/\/www.ik0vve.net\/wp-content\/uploads\/2016\/09\/20160910_231625.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter wp-image-687 \" src=\"http:\/\/www.ik0vve.net\/wp-content\/uploads\/2016\/09\/20160910_231625-e1473752880645-615x1024.jpg\" alt=\"20160910_231625\" width=\"353\" height=\"588\" srcset=\"https:\/\/www.ik0vve.net\/wp-content\/uploads\/2016\/09\/20160910_231625-e1473752880645-615x1024.jpg 615w, https:\/\/www.ik0vve.net\/wp-content\/uploads\/2016\/09\/20160910_231625-e1473752880645-180x300.jpg 180w, https:\/\/www.ik0vve.net\/wp-content\/uploads\/2016\/09\/20160910_231625-e1473752880645-90x150.jpg 90w, https:\/\/www.ik0vve.net\/wp-content\/uploads\/2016\/09\/20160910_231625-e1473752880645-400x666.jpg 400w, https:\/\/www.ik0vve.net\/wp-content\/uploads\/2016\/09\/20160910_231625-e1473752880645.jpg 1536w\" sizes=\"(max-width: 353px) 100vw, 353px\" \/><\/a><\/p>\n<p style=\"text-align: justify;\">Moving up and down the two bins I&#8217;ve reached a coarse value just to use my variometer for tuning. The maximum value that I can reach is about 4 mH.<\/p>\n<p style=\"text-align: justify;\">In the next photo the final layout of entire matching system for 630 and 136 kHz.<a href=\"http:\/\/www.ik0vve.net\/wp-content\/uploads\/2016\/09\/20160913_082035.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-large wp-image-688\" src=\"http:\/\/www.ik0vve.net\/wp-content\/uploads\/2016\/09\/20160913_082035-1024x614.jpg\" alt=\"20160913_082035\" width=\"640\" height=\"384\" srcset=\"https:\/\/www.ik0vve.net\/wp-content\/uploads\/2016\/09\/20160913_082035-1024x614.jpg 1024w, https:\/\/www.ik0vve.net\/wp-content\/uploads\/2016\/09\/20160913_082035-300x180.jpg 300w, https:\/\/www.ik0vve.net\/wp-content\/uploads\/2016\/09\/20160913_082035-150x90.jpg 150w, https:\/\/www.ik0vve.net\/wp-content\/uploads\/2016\/09\/20160913_082035-400x240.jpg 400w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/a><\/p>\n<p style=\"text-align: justify;\">From left: remote controlled variometer (for fine tuning), matcher, 136 kHz tunable coil. The next step will be to remote switch the two bands from my radio room.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Last night was my second &#8220;serious&#8221; TX test on 136<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[67,68,5,13,66,70,6,76,7],"tags":[],"_links":{"self":[{"href":"https:\/\/www.ik0vve.net\/index.php?rest_route=\/wp\/v2\/posts\/683"}],"collection":[{"href":"https:\/\/www.ik0vve.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ik0vve.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ik0vve.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ik0vve.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=683"}],"version-history":[{"count":4,"href":"https:\/\/www.ik0vve.net\/index.php?rest_route=\/wp\/v2\/posts\/683\/revisions"}],"predecessor-version":[{"id":692,"href":"https:\/\/www.ik0vve.net\/index.php?rest_route=\/wp\/v2\/posts\/683\/revisions\/692"}],"wp:attachment":[{"href":"https:\/\/www.ik0vve.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=683"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ik0vve.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=683"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ik0vve.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=683"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}