What information can be obtained with an antenna analyzer?

An antenna analyzer is a versatile diagnostic tool that contains a low-power RF generator and an impedance-measuring circuit. By connecting it to an antenna system, you can sweep across a range of frequencies to measure the Standing Wave Ratio (SWR) and find the exact resonant frequency of the antenna. Other options like gain, front-to-back ratio, and radiation pattern cannot be measured directly through a basic transmission line connection. These are physical properties of the antenna's radiated field that require field-strength measurements, specialized test ranges, or software modeling to determine.