Today on 6m my best DX (spots exchanged in both directions) is G4BRK (134km). I suspect this is tropo enhanced by the presence of aircraft in favorable positions. This was certainly the case with G8EPQ earlier. Eddie G3ZJO was tracking where planes would be to give enhancements. No sign of Es today on 6m WSPR, well not so far.
I am pretty sure some paths are only possible when planes are near the path and the reflections off the aircraft result in favorably low Doppler shift. It is quite common to see strong aircraft reflections but no WSPR decodes. I have seen this on both 6m and 2m. There is some drift as my rig goes from TX to RX, so often the Doppler I report is not Doppler, but drift in my rig. With aircraft reflection it is quite common to see multiple reflections with different amounts of Doppler. On some transmissions I have seen up to 6 different signals from a single TX as a result, presumably, of planes in a stack.
|6m WSPR unique spots so far today.|