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Chinese Over-the-Horizon Radar QRMing Low End of 40 Meters


The IARU Region 1 (IARU-R1) Monitoring System newsletter reports that one of China’s HF Over-the-Horizon radars (OTH-R) has been transmitting on 6.999 MHz, impinging on the very low end of the 40-meter band.

As the newsletter reported: “A jumping Chinese OTH radar covered the CW DX-edge of our exclusive 7 MHz band on November 17 at about 1500 UTC and later (long lasting).” The signal was 67 sweeps per second with a 10 kHz bandwidth.

Elsewhere on 40 meters, military ALE transmissions have been heard from Kyrgyzstan on 7050.0 kHz. IARUMS also reports that the Australian Jindalee Operational Radar Network (JORN) has been heard on 10.131 MHz in the amateur 30-meter band; Amateur Radio is secondary on 30 meters.

Radio Eritrea appeared in November on 7180 kHz together with white noise from Ethiopia. The frequencies 7146.5, 7175, and 7185 kHz were reported to be still in use as well.

Reports of Amateur Radio band intruders may be logged on the IARU Region 1 Monitoring System logger. 



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