📡⤴️✨⤵️📡

#radio propagation #ionosphere #signal reflection #shortwave radio #HF radio #over the horizon communication

📻⚡🌏

#shortwave radio #signal propagation #radio transmission #ham radio #global communication #DXing #ionosphere

📻🌊🌍

#shortwave radio #SWL #DXing #global communication #amateur radio #ham radio #world band radio #radio waves