{"id":18168,"date":"2017-08-31T20:02:27","date_gmt":"2017-08-31T20:02:27","guid":{"rendered":"https:\/\/rsgb.org\/main\/?p=18168"},"modified":"2017-10-19T20:12:02","modified_gmt":"2017-10-19T20:12:02","slug":"survey-to-find-the-extent-of-vdsl-broadband-interference","status":"publish","type":"post","link":"https:\/\/rsgb.org\/main\/blog\/news\/rsgb-notices\/2017\/08\/31\/survey-to-find-the-extent-of-vdsl-broadband-interference\/","title":{"rendered":"Survey to find the extent of VDSL Broadband Interference"},"content":{"rendered":"

The RSGB\u2019s EMC Committee has for three years been investigating the problems of interference (RFI) from VDSL broadband on the HF amateur bands and lobbying for action to reduce the problem. We have a lot of historic data, but both Ofcom and Openreach contend that 150 reports from 50,000 amateurs is not indicative of a major problem when there are 9.5 million VDSL installations deployed. The RSGB EMCC has set up a survey<\/a>\u00a0<\/strong>to collect current signal levels at the frequencies of VDSL band transitions (these indicate the presence and strength of interference).\u00a0It is very simple to do you just tune your receiver (set to AM or SSB 3kHz bandwidth) to each frequency requested note the S meter reading on the survey form. Full instructions are included in the survey.<\/p>\n

The results of an initial analysis of the Survey results to date were presented at the 2017 RFI Update RSGB Convention<\/a><\/p>\n

The survey<\/a>\u00a0is still available \u00a0for completion.\u00a0Please complete the survey<\/a> and encourage your friends to do so<\/strong><\/em><\/p>\n

The RSGB has been lobbying Openreach and Ofcom to act to reduce the RFI from overhead lines carrying these broadband signals. We have set up a mechanism with Openreach to investigate lines near amateurs, once we have confirmed problems with VDSL RFI. If a poor line balance is found then Openreach will improve the problem line (normally the neighbour\u2019s line). This has reduced the problems in some cases but many amateurs still suffer from unacceptable levels of RFI from the overhead telephone wires.<\/p>\n

John Rogers, M0JAV
\nChairman RSGB EMC Committee<\/p>\n","protected":false},"excerpt":{"rendered":"

The RSGB\u2019s EMC Committee has for three years been investigating the problems of interference (RFI) from VDSL broadband on the HF amateur bands and lobbying for action to reduce the problem. We have a lot of historic data, but both Ofcom and Openreach contend that 150 reports from 50,000 amateurs is not indicative of a […]<\/p>\n","protected":false},"author":20361,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[283,55],"tags":[313,331,311],"class_list":["post-18168","post","type-post","status-publish","format-standard","hentry","category-emc-committee-papers","category-rsgb-notices","tag-emc","tag-survey","tag-vdsl"],"_links":{"self":[{"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/posts\/18168","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\/20361"}],"replies":[{"embeddable":true,"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/comments?post=18168"}],"version-history":[{"count":0,"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/posts\/18168\/revisions"}],"wp:attachment":[{"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/media?parent=18168"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/categories?post=18168"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/tags?post=18168"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}