Black Cat Systems has announced the release of DX Toolbox 3.3.0 (US$24.99), a radio propagation / conditions analysis and forecasting tool for amateur radio operators, shortwave listeners, and other radio enthusiasts. This release adds: HTTP Proxy support for those behind a firewall; added a graph of the Planetary Kp Index; can now copy the Grayline map to the clipboard; automatic setting of the UTC offset; and updated for the new Space Environment Center URL which affects data for the Proton and Electron Flux graphs.