HF Tools
- VOACAP Online HF Predictions https://www.voacap.com/hf
- Near-Real-Time MUF Map https://www.spacew.com/www/realtime.php
- Propagation https://dx.qsl.net/propagation
- HF Propagation and Solar-Terrestrial Data Website https://www.hamqsl.com/solar3.html
- HFLINK http://hflink.com/propagation
- SWS - Global HF - Ionospheric Map https://www.sws.bom.gov.au/HF_Systems/6/5