The International Amateur Radio Union Region 1 (IARU-R1) Monitoring System (IARUMS) reports that one of China’s over-the-horizon radar (OTHR) installations has been causing interference in the Amateur Radio 7 MHz band. The IARUMS February newsletter reports on that intruder and others.
Other top 5 intruders include a “single-letter beacon” transmitting either the letter “K” or the letter “T” on …
Source: ARRL News
Link: Just When You Thought It Was Safe: Chinese Over-the-Horizon Radar Appears on 40 Meters