40m interference

Folks, anyone knows what is that? I hear it S9 in Ireland and it is booming all across EU WebSDRs right now.
40m RFI

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i heard it before, when i was out /p in the car… I reckoned on it being the Russians up to no good again!

Alan

I’ve initially though it is something local, maybe new neighbours plazma or something. It is on for at least an hour now! Weird, haven’t seen that before for so long.

Maybe this can help, it has sound samples…

Sly VA2YZX

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Aha, thanks Sly! It looks like that one - 29B6, nicknamed ‘Контейнер’ (Kontayner), is a Russian over the horizon radar. It is currently very active in Europe. The radar uses 150 antenna masts with data transmission systems, transmitters and receivers, a power station, and control buildings. It can detect high-altitude and low-altitude aircraft and missiles at very long ranges.

As on 23:40 UTC it is still on air, non-stop, occupying 7000-7020kHz - S9 +10db in Dublin - nasty!

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Well, they ARE on the receiving end nowadays, which explains the radars being active… They never thought of asking SOTA activators if this would be inconvenient though… :thinking:

I’ve heard a strong digital signal on or about 7.0MHz on a few recent occasions I’ve been in the shack. My guess is it’s a military Tx as they are legally allowed (by the ITU) to dump on civilian RF allocations. Annoying as they have huge swathes of the HF spectrum anyway. BTW some nation’s militaries are more prone to this behaviour than others and in the police jargon “have history”. So, we can speculate as to origin.

Yeah, everything is posible these days. I guess military uses the spectrum the way they like. That signal is gone now anyway, wondering if it returns at night.

yes, i think its a night time signal

Alan

If it is like the late unlamented “woodpecker” radar it moves following the MUF.

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