Main Page | See live article | Alphabetical index Selectivity is a measure of the performance of a radio receiver to respond only to the tuned transmission (or station) and reject other signals nearby - such as another broadcast on an adjacent channel. Selectivity is usually measured as a ratio in dBss, comparing the power of the signal received against that of a similar signal on another frequency. If the signal is at the adjacent channel of the selected signal, this measurement is also known as Adjacent Channel Rejection Ratio (ACRR). This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.