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Field strength meter is actually a simple receiver. After a tuner circuit, the signal is detected and fed to a microammeter, which is scaled in dBÅ³. The frequency range of the tuner is usually within the terrestrial broadcasting bands.Some FS meters can also receive satellite (TVRO and RRO) frequencies.he relation between the electric field and the transmitted power [edit]. In ideal free space, the electric field strength produced by a transmitter with isotropic radiator is readily calculated.
Field technicians can convert the input signal from any passive or active magnetic speed sensor, Hall effect sensor, or zero speed sensor. In the Frequency to Current converter configuration, the output settings are 4-20mA or 10-50mA. The coarse range is set by jumpers and the fine tuning is set by precision potentiometers. The scale of the output is proportional to the frequency of the input signal.