{"id":714,"date":"2012-07-07T08:40:53","date_gmt":"2012-07-07T08:40:53","guid":{"rendered":"http:\/\/dev.rsgbtestzone.biz\/wordpress\/?page_id=714"},"modified":"2023-04-30T21:11:35","modified_gmt":"2023-04-30T20:11:35","slug":"current-ionograms-critical-frequencies","status":"publish","type":"page","link":"https:\/\/rsgb.org\/main\/technical\/propagation\/current-ionograms-critical-frequencies\/","title":{"rendered":"Current ionograms &amp; critical frequencies"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-4678\" src=\"https:\/\/rsgb.org\/main\/files\/2012\/07\/ionograms-and-critical-freq.png\" alt=\"\" width=\"193\" height=\"151\" srcset=\"https:\/\/rsgb.org\/main\/files\/2012\/07\/ionograms-and-critical-freq.png 193w, https:\/\/rsgb.org\/main\/files\/2012\/07\/ionograms-and-critical-freq-150x117.png 150w\" sizes=\"auto, (max-width: 193px) 100vw, 193px\" \/><\/p>\n<p><strong>The links below provide information on ionospheric stations and data from around the world.<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p><strong><em>Please note the RSGB is not responsible for the content of external websites.<\/em><\/strong><\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li><a href=\"http:\/\/www.vhfdx.de\/iono.htm\">Worldwide ionograms<\/a> <a href=\"http:\/\/www.ionosonde.iap-kborn.de\/ionogram.htm\">Juliusruh<\/a><\/li>\n<li><a href=\"http:\/\/www.irf.se\/mag\/\">Kiruna magnetogram<\/a><\/li>\n<li><a href=\"http:\/\/www2.irf.se\/Observatory\/?link=Magnetometers\">Lycksele magnetogram<\/a><\/li>\n<li><a href=\"http:\/\/digisonde.oma.be\/\">Dourbes (Belgium)<\/a><\/li>\n<li><a href=\"https:\/\/dynserv.eiscat.uit.no\/LR\/latestLR.html\">Svalbard<\/a><\/li>\n<li><a href=\"http:\/\/ionos.ingv.it\/Roma\/latest.html\">Rome<\/a><\/li>\n<li><a href=\"http:\/\/www.iono.noa.gr\/\">Athens<\/a><\/li>\n<li><a href=\"https:\/\/www.ufa.cas.cz\/zemetreseni-v-ionosfere\/\">Prague<\/a><\/li>\n<li>DIDBase\u00a0 <a href=\"https:\/\/lgdc.uml.edu\/common\/DIDBFastStationList\">List<\/a> of Ionogram Stations<\/li>\n<li><a href=\"http:\/\/dias.space.noa.gr:8080\/LatestDias2\/loginPage.jsp\">Dias<\/a> \u2013 European Digital Upper Atmosphere server. Registration required<\/li>\n<li><a href=\"http:\/\/alanradiog3nyk.ddns.net\/200905-ionograms-1.pdf\">Interpreting Digital Ionosondes<\/a>&#8211; A brief tutorial<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The links below provide information on ionospheric stations and data from around the world. &nbsp; Please note the RSGB is not responsible for the content of external websites. &nbsp; Worldwide ionograms Juliusruh Kiruna magnetogram Lycksele magnetogram Dourbes (Belgium) Svalbard Rome Athens Prague DIDBase\u00a0 List of Ionogram Stations Dias \u2013 European Digital Upper Atmosphere server. Registration [&hellip;]<\/p>\n","protected":false},"author":15,"featured_media":0,"parent":657,"menu_order":10,"comment_status":"open","ping_status":"open","template":"","meta":{"footnotes":""},"class_list":["post-714","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/pages\/714","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/comments?post=714"}],"version-history":[{"count":0,"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/pages\/714\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/pages\/657"}],"wp:attachment":[{"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/media?parent=714"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}