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Just When You Thought It Was Safe: Chinese Over-the-Horizon Radar Appears on 40 Meters

A

ARRL

Well-Known Member
Nov 15, 2008
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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 ...

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