Frequency conversion is the process of changing the frequency of a signal to a different value. This is commonly used in telecommunications and broadcasting to ensure that signals can be transmitted over various media without interference. For example, a radio station may convert its signal frequency to reach different areas or to avoid overlapping with other stations. In electronics, frequency conversion is often achieved using devices like mixers or frequency synthesizers. These devices can take an input signal and produce an output signal at a desired frequency, which is essential for applications such as wireless communication and signal processing.