As a way of keeping off the street I've been working on a project to make contacts across all amateur modes, across all bands, across all countries.
Software Defined Radio (SDR) is a way of looking at radio spectrum that goes far beyond Valves and Transistors. Getting started with this kind of project can be as simple as plugging in a USB DVB-T dongle and running the right software.
From time-to-time I create visualisations to explore random data-sets. For the first time I'm collating them in one place.