Germany's DARC reports: Once again we have problems with short wave
radars. On almost every evening at 5310-5410 kHz the Russian coastal
radar 'Sunflower' broadcasts. This also makes our new miniband useless
A Google translation of their post reads:
The system is located near the city of
Makhachkala on the Caspian Sea. Acoustically we perceive it as a deep
hum. It transmits in FMOP (Frequency Modulation On Pulse) with 43 sweeps
/ sec and captures aircraft at a range of up to 450 km.
Over water ships are recognized. Even stealth
planes can be classified. The system is so successful that the Chinese
operate several "sunflowers" on the east coast. Chinese OTHs
(Over-Horizon Radars) work almost daily in the 20-meter band.
In the mornings we can often receive them with
high field strengths. They send in blocks of several seconds and jump
over wide frequency ranges. Very noticeable is the radar, which
resembles a foghorn sound (66.6 sweeps / sec). The worst "QRM brooms",
however, are the broadband radars of the Chinese. They work with 10 or
20 sweeps / sec and a signal width of 160 kHz.
In the mornings we find them in the 20 m band
and in the evening also in the 40 m band. There they are particularly
noticeable when the transmission line is in the dark. At the moment we
have extreme problems with the new Container Radar from Russia. It works
as an over horizon radar in FMOP with 40 sweeps / sec and a signal
width of about 40 kHz often for hours in the 20 m band. In the past few
days we see two systems side by side on our SDR screens.
The station is located north of Penza and not
far from Saransk. On the S-meter we see S9 + 40 dB and sometimes +50 dB.
The DARC-Bandwacht has informed the BNetzA-Konstanz [Federal Network
Agency].
Please visit the Bandwacht website again and again and click on the current intruder
http://www.iarums-r1.org/iarums/latest.pdf
The newsletters are also recommended. The image material there should also serve for further education.
The website of the Bandwacht and the IARU monitoring system is
http://www.iarums-r1.org/
This is reported by Wolf Hadel, DK2OM, from the DARC-Bandwacht.
DARC https://darc.de/
