{"id":3937,"date":"2022-07-12T07:44:37","date_gmt":"2022-07-12T10:44:37","guid":{"rendered":"http:\/\/www.summersidearc.com\/?p=3937"},"modified":"2022-07-12T07:44:39","modified_gmt":"2022-07-12T10:44:39","slug":"unknown-intruder-on-21-mhz-band","status":"publish","type":"post","link":"http:\/\/www.summersidearc.com\/index.php\/2022\/07\/12\/unknown-intruder-on-21-mhz-band\/","title":{"rendered":"Unknown Intruder on 21 MHz Band&#8230;."},"content":{"rendered":"\n<figure class=\"wp-block-table\"><table><tbody><tr><td>IARUMS newsletter &#8211; Unknown intruder in 21 MHz band!<br><br>IARU Monitoring System (IARUMS) Region 1 newsletter reports in June they received a new unknown signal in the 15m band. It was on 21003.5 kHz for several days with long\u2013lasting transmissions, and also received several times around 21122 kHz<br><br>The newsletter says:<br><br>Although it is probably a radar transmission, as we cannot officially confirm it, we report it as an unknown signal, XXX. TDoA radiolocations taken seem to show the area of Iran for this signal.<br><br>The International Amateur Radio Union Monitoring System (IARUMS) Region 1 June 2022 newsletter can be read at<br><a rel=\"noreferrer noopener\" href=\"https:\/\/www.iaru-r1.org\/wp-content\/uploads\/2022\/07\/IARUMS-R1-Newsletter-2022-06.pdf\" target=\"_blank\">https:\/\/www.iaru-r1.org\/wp-content\/uploads\/2022\/07\/IARUMS-R1-Newsletter-2022-06.pdf<\/a><br><br>Recordings of military transmissions can be found on the Signal Identification Guide Wiki at<br><a href=\"https:\/\/www.sigidwiki.com\/wiki\/Category:Military\">https:\/\/www.sigidwiki.com\/wiki\/Category:Military<\/a><br><br>Monitor the short wave bands on-line with a web based SDR receiver at<br><a rel=\"noreferrer noopener\" href=\"http:\/\/www.websdr.org\/\" target=\"_blank\">http:\/\/www.websdr.org\/<\/a><br><br>IARU Monitoring System (IARUMS)<br><a rel=\"noreferrer noopener\" href=\"https:\/\/www.iarums-r1.org\/\" target=\"_blank\">https:\/\/www.iarums-r1.org\/<\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>IARUMS newsletter &#8211; Unknown intruder in 21 MHz band! IARU Monitoring System (IARUMS) Region 1 newsletter reports in June they received a new unknown signal in the 15m band. It was on 21003.5 kHz for several days with long\u2013lasting transmissions, <a href=\"http:\/\/www.summersidearc.com\/index.php\/2022\/07\/12\/unknown-intruder-on-21-mhz-band\/\" class=\"read-more\">Read more\u2026 <\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3937","post","type-post","status-publish","format-standard","hentry","category-archive"],"_links":{"self":[{"href":"http:\/\/www.summersidearc.com\/index.php\/wp-json\/wp\/v2\/posts\/3937","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.summersidearc.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.summersidearc.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.summersidearc.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.summersidearc.com\/index.php\/wp-json\/wp\/v2\/comments?post=3937"}],"version-history":[{"count":1,"href":"http:\/\/www.summersidearc.com\/index.php\/wp-json\/wp\/v2\/posts\/3937\/revisions"}],"predecessor-version":[{"id":3938,"href":"http:\/\/www.summersidearc.com\/index.php\/wp-json\/wp\/v2\/posts\/3937\/revisions\/3938"}],"wp:attachment":[{"href":"http:\/\/www.summersidearc.com\/index.php\/wp-json\/wp\/v2\/media?parent=3937"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.summersidearc.com\/index.php\/wp-json\/wp\/v2\/categories?post=3937"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.summersidearc.com\/index.php\/wp-json\/wp\/v2\/tags?post=3937"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}