8 What is the bandwidth of the guardbands between stations f

8. What is the bandwidth of the guardbands between stations for standard FM radio?

Solution

These FM stations have a 75 kHz maximum deviation from the center frequency, which leaves 25 kHz upper and lower \"gaurd bands\" to minimize interaction with the adjacent frequency band.

A guard band is a narrow frequency range that separates two ranges of wider frequency. This ensures that simultaneously used communication channels do not experience interference, which would result in decreased quality for both transmissions.

Guard bands are used in frequency division multiplexing (FDM).

Techopedia explains Guard Band

A spectrum\'s unused portion is intended to prevent crosstalk, or noise or interference from other modulated signals on the same transmission medium, such as AM or FM radio.

The guard band concept applies to wired and wireless communications. It also simplifies the process of signal filtering for hardware, software or both.