Amateur Radio bands are different frequency ranges used for communication around the world. Each band has unique characteristics, making it suitable for specific distances, times of day, and operating conditions. Lower-frequency HF bands like 160 m and 80 m are ideal for long-distance communication at night because radio signals reflect well from the ionosphere. The 40 m band works for regional contacts during the day and long-distance communication after sunset. 20 m is one of the most reliable all-around DX bands, while 15 m and 10 m provide excellent worldwide communication when solar activity is high. The 6 m “Magic Band” can support surprisingly long contacts through Sporadic-E and other special propagation modes. 2 m and 70 cm are VHF/UHF bands mainly used for local communication, repeaters, emergency services, and amateur satellites.
The main propagation modes for these bands are Ground Wave, Skywave, Line-of-Sight, and Sporadic-E/Tropospheric, which explains how radio signals, at different frequencies, travel under different conditions.
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