{"id":1206,"date":"2019-01-06T22:38:36","date_gmt":"2019-01-06T22:38:36","guid":{"rendered":"https:\/\/klubnl.pl\/wpr\/?p=1206"},"modified":"2019-01-06T22:38:36","modified_gmt":"2019-01-06T22:38:36","slug":"dk7fc-experiments-ground-dipole","status":"publish","type":"post","link":"https:\/\/klubnl.pl\/wpr\/en\/2019\/01\/06\/dk7fc-experiments-ground-dipole\/","title":{"rendered":"DK7FC ground dipole experiments on VLF"},"content":{"rendered":"<p>Stefan DK7FC did a succesful transmit experiment utilising a ground diole on VLF. This resulted in a really strong signal on our Warsaw grabber (over 900km distance):<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-1207\" src=\"https:\/\/klubnl.pl\/wpr\/wp-content\/uploads\/2019\/01\/grabber_sq5bpf_8270_fc_x.png\" alt=\"\" width=\"1000\" height=\"600\" srcset=\"https:\/\/klubnl.pl\/wpr\/wp-content\/uploads\/2019\/01\/grabber_sq5bpf_8270_fc_x.png 1000w, https:\/\/klubnl.pl\/wpr\/wp-content\/uploads\/2019\/01\/grabber_sq5bpf_8270_fc_x-300x180.png 300w, https:\/\/klubnl.pl\/wpr\/wp-content\/uploads\/2019\/01\/grabber_sq5bpf_8270_fc_x-768x461.png 768w\" sizes=\"auto, (max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 1362px) 62vw, 840px\" \/><\/p>\n<p><!--more--><\/p>\n<p>The spectrum after amplitude normalizastion:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-1208 size-full\" src=\"https:\/\/klubnl.pl\/wpr\/wp-content\/uploads\/2019\/01\/grabber_sq5bpf_8270_avg_fc_x.png\" alt=\"\" width=\"1000\" height=\"600\" srcset=\"https:\/\/klubnl.pl\/wpr\/wp-content\/uploads\/2019\/01\/grabber_sq5bpf_8270_avg_fc_x.png 1000w, https:\/\/klubnl.pl\/wpr\/wp-content\/uploads\/2019\/01\/grabber_sq5bpf_8270_avg_fc_x-300x180.png 300w, https:\/\/klubnl.pl\/wpr\/wp-content\/uploads\/2019\/01\/grabber_sq5bpf_8270_avg_fc_x-768x461.png 768w\" sizes=\"auto, (max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 1362px) 62vw, 840px\" \/><\/p>\n<p>The antenna had about 900m and the current was about 1A. A full descrption is avaliable in the\u00a0 rsgb-lf-group list archives:<\/p>\n<p><a href=\"https:\/\/klubnl.pl\/rsgb_lf_group-archives\/html\/rsgb_lf_group\/2018-12\/msg00557.html\">https:\/\/klubnl.pl\/rsgb_lf_group-archives\/html\/rsgb_lf_group\/2018-12\/msg00557.html<\/a><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Stefan DK7FC przeprowadzi\u0142 udane eksperymenty z nadawaniem z dipola ziemnego na VLF. Da\u0142o to naprawd\u0119 silny sygna\u0142 na naszym grabberze w Warszawie (odleg\u0142o\u015b\u0107 ponad 900km):<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[8,37,12],"class_list":["post-1206","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-dk7fc","tag-ground-dipole","tag-vlf"],"translation":{"provider":"WPGlobus","version":"3.0.1","language":"en","enabled_languages":["pl","en"],"languages":{"pl":{"title":true,"content":true,"excerpt":false},"en":{"title":true,"content":true,"excerpt":false}}},"_links":{"self":[{"href":"https:\/\/klubnl.pl\/wpr\/en\/wp-json\/wp\/v2\/posts\/1206","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/klubnl.pl\/wpr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/klubnl.pl\/wpr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/klubnl.pl\/wpr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/klubnl.pl\/wpr\/en\/wp-json\/wp\/v2\/comments?post=1206"}],"version-history":[{"count":4,"href":"https:\/\/klubnl.pl\/wpr\/en\/wp-json\/wp\/v2\/posts\/1206\/revisions"}],"predecessor-version":[{"id":1212,"href":"https:\/\/klubnl.pl\/wpr\/en\/wp-json\/wp\/v2\/posts\/1206\/revisions\/1212"}],"wp:attachment":[{"href":"https:\/\/klubnl.pl\/wpr\/en\/wp-json\/wp\/v2\/media?parent=1206"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/klubnl.pl\/wpr\/en\/wp-json\/wp\/v2\/categories?post=1206"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/klubnl.pl\/wpr\/en\/wp-json\/wp\/v2\/tags?post=1206"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}