We are starting to have pileups in the 8270Hz band, you can see this on our grabber: https://klubnl.pl/wpr/en/index.php/klubnl-pl-grabbers/grabber-4-8270hz/
Joe VO1NA on 8270.0075Hz , Stefan DK7FC on 8270.0Hz, Uwe DJ8WX on 8269.996Hz. And maybe Riccardo IW4DXW on 8270.003Hz
Spectrogram with average amplitude normalisation, but without annotations:
Spectrogram without amplitude normalisation:
