Digital 3kHz wide signal overlapping 20m WSPR band

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PA0SIM
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Joined: 2021/05/06 - 09:05
Digital 3kHz wide signal overlapping 20m WSPR band

Hello all,
last week I saw a topic addressing it, but can't find it any more.
On the WebSDR in Maasbree I hear regularly a digital signal overlapping the WSPR band on 20m.
At my QTH I have too much QRM to hear it.
Does anyone know what it is?

73 Jan PA0SIM
websdrmaasbree.nl