Gray Line Propagation
Propagation along the grey line is very efficient. updates every 5 minutesShort-Path Propagation from UKDay light map of the worldWorking PSKWork the world on low power in low sun spot
VHF Propagation website MMMON-VHFAnother Propagation website worth giving a visit.
HF MUFMaximum Usable Frequency.Marine Traffic RadarWorld coverage of marine activityFlight RadarWorld coverage of flying aircraft
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