The Federal Communications Commission (FCC) has recently approved the use of FM mode on Citizen Band Radios (CB radios), which is the biggest change in CB radio technology in the United States since the late 1970s. CB radios have traditionally used AM and single-sideband (SSB) modes, but the addition of FM mode offers several advantages, particularly in terms of voice quality and reduced background noise.
According to the Department of Electrical Engineering and Computer Sciences at U.C. Berkeley, FM mode provides an "improved signal to noise ratio (about 25dB) with regards to man-made interference" compared to AM, which could significantly reduce background noise interference and improve voice quality. This development could be particularly beneficial for truckers, who are among the top users of CB radios in the United States.
Professional users of the CB radio band, such as truckers, have long faced challenges communicating effectively, especially during peak times when solar cycles can interfere with signals. However, the addition of FM mode is expected to cut down on this interference and offer a more reliable communication method for professional users.
In summary, the FCC's approval of FM mode for CB radios represents a significant advancement in the technology, offering improved voice quality and reduced background noise interference. This development is expected to be particularly beneficial for professional users of CB radios, such as truckers.