SV1XV's photos with the keyword: OTHR

Unusual narrow band OTHR on 27196 kHz on September 4, 2022, recorded on SV1XV KiwiSDR.

Obnoxious Over The Horizon Radar - OTHR signal covers 10120-10140 kHz and obliterates 40% of the 30m band on April 7, 2019.

Spectrum capture of a OTHR (Over The Horizon Radar) on 10140-10160 kHz, using a Microtelecom Perseus Receiver. 2016-05-07, 20:15 UTC. This transmission obliterates the amateur radio JT56 & WSPR band.

20 kHz wide Over the Horizon Radar (OTHR) intruder obliterates 10135-10165 kHz, including the digital mode section of 30 m ham band. Spectrum capture using a Perseus SDR receiver.

Two OTHR signals on 3185-3215 kHz and 3240-3260 kHz, below the 80 m band. According to Wolf Hadel, DK2OM, in his 2013 IARU report "Radar Systems on Shortwave", the one on 3250 is located in Romania or Greece. The strong signal just above 3260 kHz and the one near 3158 kHz are second harmonics of a greek MW pirate broadcasters. Captured on Perseus SDR receiver on 2014-12-26 at 1656 UTC.

Spectrum capture of PLUTO OTHR (Over The Horizon Radar) on 28370 kHz, in the 10m ham radio band, usign a Microtelecom Perseus Receiver. 20014-12-25, 09:40 UTC.

Spectrum capture of the Iranian OTHR (Over The Horizon Radar) on 28000 kHz, usign a Microtelecom Perseus Receiver. 20014-10-28, 08:13 UTC. From Wikipedia: Sepehr (OTHR) is an Over-the-horizon radar system being developed by Iran. Little is known of the project, except it has a reported range of 3,000 kilometers. It was scheduled to enter operational status in 2013. In August 2013, Iran announced completion of a first stage of the project with a range of only 300-700km. In 2014 Iran announced it wished to establish a Space Based radar system. It is currently expected to be finalised by the end of 2014.

Spectrum capture of Russian 29B6 OTHR (Over The Horizon Radar) on 14230 kHz, using a Microtelecom Perseus Receiver. 2014-12-25, 14:20 UTC. This intruding transmission obliterates the amateur radio SSTV band.

Spectrum capture of PLUTO OTHR (Over The Horizon Radar) on 13000 kHz, usign a Microtelecom Perseus Receiver. 20014-12-25, 14:46 UTC.