Current ionograms & critical frequencies
The links below provide information on ionospheric stations and data from around the world.
Please note the RSGB is not responsible for the content of external websites.
- Worldwide ionograms Juliusruh
- Kiruna magnetogram
- Lycksele magnetogram
- Dourbes (Belgium)
- Svalbard
- Rome
- Athens
- Prague
- DIDBase List of Ionogram Stations
- Dias – European Digital Upper Atmosphere server. Registration required
- Interpreting Digital Ionosondes– A brief tutorial
