Which of the following can reduce interference to a 2-meter band transceiver from a nearby commercial FM station?

Answer: D. Installing a band-reject filter

A band-reject filter blocks a narrow range of frequencies, such as a strong commercial FM broadcast signal, while letting your 2-meter signals through. A preamplifier would boost the interfering signal too and could make overload worse.

Tip: Reject the band that bothers you.