Radio Propagation
While we wait for the sporadic-E season to get going properly, here's a demonstration fly-through of this afternoon's global 10m to 2m band propagation, recorded live from amateur radio DX Cluster data with a five-minute cadence, at 17h07 UT 28 March.
The yellow lines denote 10m contacts. As you can see, there's not much going on above the 10m band at the time of the recording. All the lower bands have been supressed so as to make 10m clearer.
The number of hops and reflection locations any particular signal path makes are estimated and not real, but is based upon real factors such as ionosphere height, propagation mode and the MUF. Different frequencies reach different heights, as future videos will show.