Many thanks to Hamilton (KD0FNR) who writes: Hamie (KO6BTY) and I have been playing with mapping our QSOs for a few years now. We evolved from ionosonde data and Google Earth to data from an NOAA model called GloTEC, (Global Total Electron Content), and Cesium Ion maps. Out of that, we have an app up … Continue reading Mapping the Ionosphere: Hamie and Hamilton’s GloTEC-Powered F2 Layer App