Global HF Propagation (W.Hemisphere Zoom)

Band/Frequency Colour Key:
band_spectrum  HF FADEOUT? > 

Click here for Global HF Map
Listen live to the HF band here: WebSDR receiver located in the Netherlands

The map above was generated using G7RAU’s Live MUF application. The map uses Great Circle projection centred on the the mid-Atlantic. It’s 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 tho 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, expecially contest weekends where thousands of amateur operators chase contacts across the globe. The last 100 contacts reported on the DX Cluster can be seen here.

Contact paths remain visible on the map for 15 minutes before being erased.


Additional live data from USAF ionosonde at RAF Fairford in Gloucestershire on the Cotswolds (UK)
Note that this page auto-refreshes once per minute.

RAF Fairford ionosonde
Click here (opens in a new tab).

*MUF = Maximum Useable Frequency

The G7IZU Radio Reflection Detection page. A website featuring articles about space weather, aurora, and things related to the ionosphere