1. QRS-10 CW marathon (rules 2025) - https://hampass.org/upload/Rules_mQRS10_EN_2025-V1.pdf
2. WWFF 2025 Marathon Rules - https://wwff.co/marathon-rules/
3. Parks on the Air (зимові дні активності): Winter - 3rd Full Weekend of January. January 18-19, 2025 - https://docs.pota.app/docs/events.html
4. NCDXF Newsletter (Winter 2024-25) - https://ncdxf.org/pages/newsletter.html
5. SignalSDR Pro - https://www.crowdsupply.com/signalens/signalsdr-pro
73 de UT2AB
