{"id":41,"date":"2024-10-17T16:28:48","date_gmt":"2024-10-17T21:28:48","guid":{"rendered":"https:\/\/n9sgg.net\/?p=41"},"modified":"2025-03-27T12:17:52","modified_gmt":"2025-03-27T17:17:52","slug":"rf-ground-site-survey-rfgss","status":"publish","type":"post","link":"https:\/\/n9sgg.net\/index.php\/2024\/10\/17\/rf-ground-site-survey-rfgss\/","title":{"rendered":"RF Ground Site Survey"},"content":{"rendered":"\n<p>So, I need to conduct an RF survey of a ground site. The survey&#8217;s purpose is to determine if there is any QRM in the area of a ground site receiving UHF radio signals for GNSS with RTK radios.<\/p>\n\n\n\n<p>What is QRM? It&#8217;s an amateur radio shorthand for man made noise encountered when trying to receive a signal. That&#8217;s what we are looking for here. Any noise, man made or natural (QRN) interference.<\/p>\n\n\n\n<p>The antenna is cut for 450 MHz.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/n9sgg.net\/wp-content\/uploads\/2024\/10\/quarterwaveantenna-1024x1024.jpeg\" alt=\"\" class=\"wp-image-45\" srcset=\"https:\/\/n9sgg.net\/wp-content\/uploads\/2024\/10\/quarterwaveantenna-1024x1024.jpeg 1024w, https:\/\/n9sgg.net\/wp-content\/uploads\/2024\/10\/quarterwaveantenna-300x300.jpeg 300w, https:\/\/n9sgg.net\/wp-content\/uploads\/2024\/10\/quarterwaveantenna-150x150.jpeg 150w, https:\/\/n9sgg.net\/wp-content\/uploads\/2024\/10\/quarterwaveantenna-768x768.jpeg 768w, https:\/\/n9sgg.net\/wp-content\/uploads\/2024\/10\/quarterwaveantenna-1536x1536.jpeg 1536w, https:\/\/n9sgg.net\/wp-content\/uploads\/2024\/10\/quarterwaveantenna-2048x2048.jpeg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>So, I need to conduct an RF survey of a ground site. The survey&#8217;s purpose is to determine if there is any QRM in the area of a ground site receiving UHF radio signals for GNSS with RTK radios. What is QRM? It&#8217;s an amateur radio shorthand for man made noise encountered when trying to&#8230;<\/p>\n","protected":false},"author":1,"featured_media":45,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-41","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-n9sgg"],"_links":{"self":[{"href":"https:\/\/n9sgg.net\/index.php\/wp-json\/wp\/v2\/posts\/41","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/n9sgg.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/n9sgg.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/n9sgg.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/n9sgg.net\/index.php\/wp-json\/wp\/v2\/comments?post=41"}],"version-history":[{"count":5,"href":"https:\/\/n9sgg.net\/index.php\/wp-json\/wp\/v2\/posts\/41\/revisions"}],"predecessor-version":[{"id":95,"href":"https:\/\/n9sgg.net\/index.php\/wp-json\/wp\/v2\/posts\/41\/revisions\/95"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/n9sgg.net\/index.php\/wp-json\/wp\/v2\/media\/45"}],"wp:attachment":[{"href":"https:\/\/n9sgg.net\/index.php\/wp-json\/wp\/v2\/media?parent=41"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/n9sgg.net\/index.php\/wp-json\/wp\/v2\/categories?post=41"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/n9sgg.net\/index.php\/wp-json\/wp\/v2\/tags?post=41"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}