Acknowledgements & licensing:
NOAA SWPC (Kp/alerts) ·
GFZ Potsdam
(Kp fallback, CC BY 4.0; Matzka et al. 2021, doi:10.1029/2020SW002641) ·
N0NBH/HamQSL (SFI) ·
ionosonde foF2/MUF via
KC2G
(Andrew Rodland), aggregating GIRO/LGDC Digisonde data
(CC BY-NC-SA 4.0, non-commercial; Reinisch & Galkin 2011, doi:10.5047/eps.2011.03.001) ·
Reverse Beacon Network · WSPR.live · PSK Reporter.
Developed by Mark Haworth (G4EID / KM8H) with the assistance of AI. © 2026 Mark Haworth. ·