| IARUMS newsletter – 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–lasting transmissions, and also received several times around 21122 kHz The newsletter says: 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. The International Amateur Radio Union Monitoring System (IARUMS) Region 1 June 2022 newsletter can be read at https://www.iaru-r1.org/wp-content/uploads/2022/07/IARUMS-R1-Newsletter-2022-06.pdf Recordings of military transmissions can be found on the Signal Identification Guide Wiki at https://www.sigidwiki.com/wiki/Category:Military Monitor the short wave bands on-line with a web based SDR receiver at http://www.websdr.org/ IARU Monitoring System (IARUMS) https://www.iarums-r1.org/ |
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