{"id":1244,"date":"2014-12-18T21:32:35","date_gmt":"2014-12-18T21:32:35","guid":{"rendered":"https:\/\/dh5ym.hopto.org\/wiki\/?p=1244"},"modified":"2014-12-22T20:58:58","modified_gmt":"2014-12-22T20:58:58","slug":"u02-dds-by-dj0abr","status":"publish","type":"post","link":"http:\/\/dh5ym.hopto.org\/wiki\/?p=1244","title":{"rendered":"U02 DDS, by DJ0ABR"},"content":{"rendered":"<p>For some tests with WSPR i purchased a DDS PCB from Kurt DJ0ABR. The PCB comes with most parts assembled and you just need to solder\u00a0 some easy stuff as well as mount it into an enclosure. There is a microcontroller\u00a0 that interfaces with a PC or\u00a0 operates the DDS alone. It can be used as synthesizer\u00a0 for AM FM, as\u00a0 a wobbler unit as\u00a0 well as beacon for WSPR, CW and DSTAR. Frequency range is from medium wave to 160MHz.<\/p>\n<p><a href=\"http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2014\/12\/wpid-wp-1418937586788.jpeg\"><img decoding=\"async\" class=\"alignnone size-full\" title=\"wp-1418937586788\" src=\"http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2014\/12\/wpid-wp-1418937586788.jpeg\" alt=\"image\" \/><\/a><\/p>\n<p>Edit:<\/p>\n<p>Today i added the GPS receiver and connected the DDS to a Outbacker 1899 antenna placed on the heating inside the room. During the sunset some stations received my 50mW signal on 20m.<\/p>\n<div id=\"attachment_1250\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2014\/12\/wsprnet_20m_50mW.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1250\" class=\"size-medium wp-image-1250\" src=\"http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2014\/12\/wsprnet_20m_50mW-300x202.png\" alt=\"wsprnet_20m_50mW\" width=\"300\" height=\"202\" srcset=\"http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2014\/12\/wsprnet_20m_50mW-300x202.png 300w, http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2014\/12\/wsprnet_20m_50mW-446x300.png 446w, http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2014\/12\/wsprnet_20m_50mW.png 625w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-1250\" class=\"wp-caption-text\">wsprnet_20m_50mW<\/p><\/div>\n<p>[The list is a screenshot from WSPRNET.org]<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>For some tests with WSPR i purchased a DDS PCB from Kurt DJ0ABR. The PCB comes with most parts assembled and you just need to solder\u00a0 some easy stuff as well as mount it into an enclosure. There is a &hellip; <a href=\"http:\/\/dh5ym.hopto.org\/wiki\/?p=1244\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11,15],"tags":[],"class_list":["post-1244","post","type-post","status-publish","format-standard","hentry","category-microcontroller","category-rf"],"_links":{"self":[{"href":"http:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=\/wp\/v2\/posts\/1244","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1244"}],"version-history":[{"count":6,"href":"http:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=\/wp\/v2\/posts\/1244\/revisions"}],"predecessor-version":[{"id":1252,"href":"http:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=\/wp\/v2\/posts\/1244\/revisions\/1252"}],"wp:attachment":[{"href":"http:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1244"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1244"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1244"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}