{"id":3490,"date":"2010-02-19T05:36:00","date_gmt":"2010-02-18T18:36:00","guid":{"rendered":"https:\/\/www.homebrewradio.us\/blog\/2010\/02\/19\/sunspot-1046-explains-mysterious-rome-norway-propagation\/"},"modified":"2025-07-21T15:33:27","modified_gmt":"2025-07-21T05:33:27","slug":"sunspot-1046-explains-mysterious-rome-norway-propagation","status":"publish","type":"post","link":"https:\/\/www.homebrewradio.us\/blog\/2010\/02\/19\/sunspot-1046-explains-mysterious-rome-norway-propagation\/","title":{"rendered":"Sunspot 1046 Explains Mysterious Rome-Norway Propagation"},"content":{"rendered":"

\"\"<\/a>I’ve been trying to understand the propagation conditions that caused my little 20 mW DSB signal to be received ALL-NIGHT-LONG at a distance of 1900 km by station LA3JJ on the night of 12\/13 Feb 2010 (click here<\/a> for more details).<\/p>\n

A visit to spaceweather.com<\/a> provided the answer. At around 1126 UTC on 12 Feb we had the brightest solar flare in more than two years: Sunspot 1046 produced an M8.3 Flare. Helge Mortensen in Norway reported that on 15 Feb in Norway there was “a fantastic blast of aurora.” He took a beautiful picture of it (above). Could it be that we see in this picture particles from the same flare, or a coronal mass ejection associated with it?<\/p>\n

One of the really cool things about the spaceweather.com<\/a> site is that it includes lots of input from amateur astronomers and photographers like Helge. Emiel Veldhuis in the Netherlands happened to be observing 1046 when the M flare occurred and he took this series of shots:<\/p>\n

\"\"<\/a>Terje Isberg in Switzerland was listening to a DRM station on sortwave. He observed and recorded the radio blackout (SID) caused by the flare:
\"\"<\/a>Rogiero Marconi in Brazil took this shot of the sunspot:
\"\"<\/a>Amazing stuff. This is a good example of how WSPR really puts you in touch with solar conditions and space weather.<\/p>\n","protected":false},"excerpt":{"rendered":"

I’ve been trying to understand the propagation conditions that caused my little 20 mW DSB signal to be received ALL-NIGHT-LONG at a distance of 1900 km by station LA3JJ on the night of 12\/13 Feb 2010 (click here for more details). A visit to spaceweather.com provided the answer. At around 1126 UTC on 12 Feb … Continue reading “Sunspot 1046 Explains Mysterious Rome-Norway Propagation”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27,80,26],"tags":[],"class_list":["post-3490","post","type-post","status-publish","format-standard","hentry","category-propagation","category-solar-cycle","category-wspr"],"_links":{"self":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/3490","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/comments?post=3490"}],"version-history":[{"count":1,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/3490\/revisions"}],"predecessor-version":[{"id":3495,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/posts\/3490\/revisions\/3495"}],"wp:attachment":[{"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/media?parent=3490"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/categories?post=3490"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.homebrewradio.us\/blog\/wp-json\/wp\/v2\/tags?post=3490"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}