Makar Petrov

Scale-dependent WSPR response to geomagnetic storms: frequency dependence and baseline-invariant absolute loss

We test the hypothesis that geomagnetic storms (Kp ≥ 5) suppress WSPR spot counts on HF amateur bands. Using openly available data from wspr.live (hourly aggregated, 3 bands: 20 m, 40 m, 15 m) and GFZ Potsdam Kp index, covering 18 months (April 2024 – September 2025, 39 456 WSPR...