Text: Selectivity refers to the ability of an FM tuner to separate stations that are next to each other on the dial. In most large cities, the assigned frequencies of local FM stations are fairly well spread out over the dial, so that mutual interference is avoided. In some areas, however, FM stations received from different cities happen to fall too closely on adjacent frequencies. In such special locations, good selectivity becomes an important tuner specification. Selectivity is expressed as the number of decibels by which the signal from an interfering station in a nearby channel is reduced.

See Also:

Source: 103