This evening (24/7/14) i set a slow moving waterfall to average the spectrum on 24GHz around GB3MAN beacon.
There is no RS about but 10GHz signal is up peaking 15dB/10Hz, Dew point is 8C.

I can see a trace of the beacon above my local gps locked marker, see screen grab below:

GB3MAN 24GHz weak tropo signal

GB3MAN path plot from IO94IL