SWR (Standing Wave Ratio)

Standing Wave Ratio (SWR) measures how efficiently radio frequency energy is transmitted between a transmitter and an antenna. It indicates the level of mismatch: a low SWR (close to 1:1) means most energy is transmitted effectively, while a high SWR suggests reflected energy, which can cause inefficiency or damage. Think of it like water flowing through a pipe; if the pipe isn’t matched properly, pressure builds up, causing echoes or standing waves. Maintaining a low SWR ensures clear signal transmission, optimal performance, and equipment safety.