It’s good to know which summits are microwave-friendly before dragging up a long Yagi. It’s not obvious by staring at a topographical map where obstructions are creating a radio shadow. Suppose you could use radio coverage map software.
Oh that there were 7 million 23cm chasers in reach! I couldn’t resist estimating a very rough number in reach (assuming 23cm operators are evenly distributed). Given UK pop. ~66M, UK hams ~75k, total activator QSOs is 5.123M and total 23cm is QSOs is 5857 then would have about 6000 amateurs in reach of which about 7 would be QRV on 23cm rather than on another band.
But that’s just averaging the historical worldwide SOTA QSO data over many years. In practise, of course the 23cm activity spikes during events and by alerting/emailing chasers - so better odds.
The former method - I went to database -> Summits -> List of All Summits, and selected Association and Region. Then I clicked on the Info link against each of the summits in turn and picked out 23cm QSO total for that summit.
73, Andy (G8CPZ)