03/14/2016
The International Amateur Radio Union Region 1 (Europe/Africa) Monitoring
System (IARUMS[1]) reports a spate of over the horizon (OTH) radar signals on
various Amateur Radio HF bands - exclusive and shared. Many of these signals
are being heard outside of the Region 1 confines.
A 50 kHz wide Russian OTH radar has been heard in the evening on 80 meters,
often in the CW part of the band. An "often long-lasting" Russian OTH signal
about 13 kHz wide is being heard on the 7000-7100 kHz segment of 40 meters,
while some digital traffic (FSK or PSK), and a "Codar-like radar from the Far
East" are being heard in the 7000-7200 kHz segment as well as non-amateur CW
transmissions.
The same OTH radar being heard on 40 meters also is appearing on 20 meters,
along with digital traffic in FSK or PSK and on CW and broadband OTH radar
signals from China. Some monitoring reports are intriguing, such as this one on
14.280 MHz from IARU Region 1 Monitoring System Coordinator Wolf Hadel, DK2OM:
"Female voice with encrypted msgs - figures - "SZRU" = Foreign Intelligence
Service of Ukraine in Rivne - every Wednesday at 1005 UTC."
Broadband OTH radars from China, Australia, Cyprus, and Turkey have been
monitored in 15 meters. On 10 meters, radars from Iran with FM CW and different
sweep rates have been monitored, as well as fishery buoys on CW, and taxi
operations on voice from Russia.
Voice traffic from fishing operations has been heard on all or most HF bands,
as well as a variety of broadcasters, including Radio Tajik on 14.295 MHz,
Radio Taiwan and Myanmar Radio, both on 7.200 MHz, and Radio Hargaysa in
Somalia on 7.120 MHz.
The February 2016 IARU Region 1 Monitoring System newsletter[2] offers more
details. There is an online archive[3] of past issues. - Thanks to the IARU
Region 1 Monitoring System
[1] http://www.iarums-r1.org/iarums/
[2] http://www.iarums-r1.org/iarums/news2016/news1602.pdf
[3] http://www.iaru-r1.org/index.php?option=com_content&view=category&la
yout=blog&id=39&Itemid=87
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