{"id":25136,"date":"2020-07-13T20:24:00","date_gmt":"2020-07-13T19:24:00","guid":{"rendered":"https:\/\/rsgb.org\/main\/?p=25136"},"modified":"2020-12-23T12:10:13","modified_gmt":"2020-12-23T12:10:13","slug":"13-july-how-to-check-for-vdsl-rfi-by-john-rogers-m0jav","status":"publish","type":"post","link":"https:\/\/rsgb.org\/main\/blog\/tonight-at-eight-archive\/2020\/07\/13\/13-july-how-to-check-for-vdsl-rfi-by-john-rogers-m0jav\/","title":{"rendered":"13 July 2020 &#8211; How to check for VDSL RFI by John Rogers, M0JAV"},"content":{"rendered":"<blockquote><p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/M1IFM52mz2U?start=134\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><span style=\"display: inline-block; width: 0px; overflow: hidden; line-height: 0;\" data-mce-type=\"bookmark\" class=\"mce_SELRES_start\">?<\/span><\/iframe><\/p><\/blockquote>\n<h3>John&#8217;s presentation<\/h3>\n<p>The <strong><a href=\"https:\/\/rsgb.org\/main\/about-us\/committees\/electromagnetic-compatibility-committee\/\" target=\"_blank\" rel=\"noopener noreferrer\">RSGB EMC Committee (EMCC)<\/a><\/strong> has been investigating VDSL interference since 2014. As the number of installations has risen to over 30M the interference level at amateur radio stations has also increased. The majority of radio amateurs are now impacted by this problem.<\/p>\n<p>In the <a href=\"https:\/\/thersgb.org\/members\/publications\/radcom\/2020\/may\/18\/\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>May 2020 RadCom<\/strong><\/a> we outlined how to detect and estimate the level of interference. This can be done by inspection of an SDR spectrum display or by taking a recording and then using a SW package\u2014developed by Martin Sach of the EMCC\u2014which identifies the VDSL signature in the recording and shows how many different VDSL lines are causing the problem and what their relative strengths are.<\/p>\n<p>This talk demonstrates what to look for and how to use the tools to find out if you have a problem yourselves. We hope this will help you respond to our call for action and complain to Ofcom about the level of RFI you are subjected to.<\/p>\n<p><strong>John Rogers, M0JAV<\/strong><br \/>\n<strong> Chair EMCC<\/strong><\/p>\n<h3>About John<\/h3>\n<p>John Rogers, M0JAV is an RSGB Board Director and Chair of the RSGB EMC Committee (EMCC)<\/p>\n<h3>Find out more<\/h3>\n<ul>\n<li><strong>Look<\/strong> at the <strong><a href=\"https:\/\/rsgb.org\/vdsl-reporting\" target=\"_blank\" rel=\"noopener noreferrer\">RSGB VDSL reporting web page<\/a><\/strong><\/li>\n<li><strong>Watch<\/strong> the 2019 Convention presentation <em><strong><a href=\"https:\/\/www.youtube.com\/watch?v=qXce6qASfkA&amp;list=PLmtHS6LSBybadAdZnZ8peyLG3Ycre6PLh&amp;index=6&amp;t=1s\" target=\"_blank\" rel=\"noopener noreferrer\">RFI Clinic<\/a><\/strong><\/em> by John Rogers, M0JAV and David Lauder, G0SNO<\/li>\n<li><strong>Read<\/strong> <strong><a href=\"https:\/\/www.rsgb.shop\/cgi-bin\/sh000025.pl?WD=software%20defined%20radio&amp;PN=Online_Catalogue_What_s_New_26%2ehtml#a1_211627\" target=\"_blank\" rel=\"noopener noreferrer\"><em>Software Defined Radio<\/em> by Andrew Barron, ZL3DW<\/a><\/strong><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>? John&#8217;s presentation The RSGB EMC Committee (EMCC) has been investigating VDSL interference since 2014. As the number of installations has risen to over 30M the interference level at amateur radio stations has also increased. The majority of radio amateurs are now impacted by this problem. In the May 2020 RadCom we outlined how to [&hellip;]<\/p>\n","protected":false},"author":20358,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[381],"tags":[],"class_list":["post-25136","post","type-post","status-publish","format-standard","hentry","category-tonight-at-eight-archive"],"_links":{"self":[{"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/posts\/25136","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/users\/20358"}],"replies":[{"embeddable":true,"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/comments?post=25136"}],"version-history":[{"count":0,"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/posts\/25136\/revisions"}],"wp:attachment":[{"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/media?parent=25136"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/categories?post=25136"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/tags?post=25136"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}