Amateur radio is a hobby that allows individuals to communicate with others locally and worldwide using radio waves. Amateur radio operators, or "hams," use their own equipment to transmit and receive messages, experiment with radio technology, and participate in emergency communication services.
FT8 has revolutionized the hobby. It allows operators to make contacts even when signal conditions are extremely poor, using computer software to decode signals that the human ear cannot hear. 2. Software Defined Radio (SDR)