Define the following as used in radio receivers. Selectively Sensitivity

Selectivity

- Definition: The ability of a radio receiver to distinguish between signals at closely spaced frequencies.
- Function: To prevent interference from adjacent channels and improve the reception quality of the desired signal.

Sensitivity

- Definition: The minimum signal strength required for a radio receiver to produce an audible or visible signal.
- Measurement: Expressed in microvolts (µV) or decibels microvolts (dBµV).
- Function: Indicates the receiver's ability to detect weak signals and provide a clear reception even in environments with low signal levels.