GW0TQM's Amateur Radio Collection. This started as a series of bookmarks but has had comment added and is updated frequently. Its a hotchpotch, but so is Amateur Radio. This app hotlinks you to a range of amateur radio interest. Solar and Geomagnetic s. On screen MUF and Greyline indicators. NEW: HF propagation for the UK. VHF propagation from the APRS Network.