What reading on an SWR meter indicates a perfect impedance match between the antenna and the feedline?

A reading of 1 to 1 on an SWR (Standing Wave Ratio) meter signifies a perfect impedance match between the antenna and the feedline. This means that there is no reflected power and all of the transmitted power is being effectively radiated by the antenna.

In a 1 to 1 ratio, the impedance of the antenna exactly matches the characteristic impedance of the feedline, typically either 50 ohms or 75 ohms, depending on the system design. This ideal match is crucial in ham radio operations to ensure optimal performance and efficiency, as it minimizes signal loss and potential damage to the transmitter.

Higher SWR values indicate increasing levels of reflected power due to mismatch in impedance, which can lead to inefficient operation and heating of the transmitter.