time-lapse frame, W Hemi HF Propagation webcam
Webcam by G7IZU2021-01-25 09:32:55 Etc/UTC

The map above was generated using G7RAU’s Live MUF application. The map uses Great Circle projection centred on the mid-North Atlantic. The page is automatically refreshed approximately once per minute. Radio propagation is reported by amateur radio operators via the DX Cluster network. The Live MUF application plots the path on the map with the colour indicating the frequency of transmission according to the colour key. The normal pattern is for the higher frequencies (above 7 MHz) to be active during daylight, and lower frequencies to be active during the night. Weekends tend to be a lot more active, especially during contest weekends where thousands of amateur operators chase contacts across the globe. Solar flares can often cause intense bursts of X-rays to be blasted towards Earth. When they strike the atmosphere the ionosphere becomes highly ionized, which can cause severe radio blackouts due to noise on the HF frequencies. Blackouts can also affect VHF, UHF and higher frequencies. Contact paths remain visible on the map for 15 minutes before being erased. The colour key for contact reports can be found on this page: https://www.tvcomm.co.uk/g7izu/?page_id=108