Used Frequency Counter and RF Finders, Frequency counters and RF finders are essential tools in the field of electronics and telecommunications. These devices are used to measure and locate radio frequency signals, helping technicians and engineers troubleshoot and optimize wireless communication systems.A frequency counter is a device that measures the frequency of a periodic signal. It works by counting the number of cycles of the signal within a given period. This information is then used to determine the frequency of the signal. Frequency counters are commonly used in various applications, such as testing and calibrating radio transmitters, receivers, and antennas.