SELECTIVITY

Selectivity in wireless means the ability of a wireless product to receive the transmitted frequency that they wish, and to avoid receiving interference from adjacent and nearby similar frequencies.  For example, if you are talking on a cellular telephone and you hear another conversation, that other conversation could be due to either selectivity or an on channel frequency caused by Intermodulation.

Wireless products usually contain frequency filters and have excellent electronics such as frequency synthesizers to help guard against interference.  However, if the interfering signal is strong, it might get through anyway.  One thing to do is to move your location at least slightly.  Most wireless products have a good deal of protection against interference.  Therefore, just moving a little away from a strong point of the interfering signal may in fact help.  If not, of course, you may try another channel by hanging up and re-initiating the call.