Broadcasters interfere with exclusive amateur radio frequencies




The International Union of Amateur Radio Region 1 (IARU-R1) Surveillance system (IARUMS) reports that Radio Hargeisa in Somaliland returned to 7,120 kHz after a hiatus of several weeks, while Radio Eritrea was reported at 7,140 and 7,180 kHz. Radio Sudan transmitted on 7,205 kHz with excessive splash, IARUMS said. The German telecommunications authorities have lodged official complaints.

IARUMS also reported digital signals assigned to the Israeli Navy on 7,107 and 7,150 kHz. In addition, a Russian military signal F1B was observed in mid-November on 7179 kHz. A radar above the Russian horizon returned to 20 meters on 14 335 – 14 348 kHz. He was monitored on November 22. Earlier this fall, IARUMS reported digital signals from the Polish military daily on 7,001.8 kHz where amateur radio has a primary global allocation. Telecommunications officials in Germany have filed a complaint.

IARUMS has received reports of short “beeps” spaced exactly 1 second apart, as well as frequency hops between 10,108 and 10,115 kHz and between 18,834 and 18,899 kHz. The signals are believed to originate from a site near Chicago associated with an FCC-licensed experimental operation involved in low-latency exchange trading on HF (see “Experiments seek to take advantage of low latency HF technology to reduce exchange times by microseconds“). Although amateur radio is secondary over 30 and 17 meters, experimental licenses cannot interfere with amateur radio operations.

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