We are a volunteer-run organization. Therefore, support is free for everyone. To become a supporter, subscribe to the SOS newsletter (available in English, German, French, Spanish, Arabic, and Luxembourgish).
If you would like to participate in the “Frequency Initiative 71,” please contact the SOS office by email.
https://sos-save-our-spectrum.org/frequenzinitiative-71-gegruendet/
