New Developments in CB Radio

AM is the transmission of audio signals by changing the amplitude of the carrier signal. In AM modulation, the amplitude of the audio signal changes as the audio signal changes. The receiver demodulates the signal by detecting the change in amplitude to restore the original audio signal. In the AM wave receiver, the noise component is amplified along with the signal component. AM signals are more susceptible to interference during transmission. It is greatly affected by weather conditions, electronic devices, and other radio signals. Generally speaking, AM broadcasting is more commonly used to transmit voice content such as news, sports reports, and talk shows.

FM mode is an option available only since 2021 when the FCC began permitting the use of FM CB frequencies. This mode provides close-range higher sound quality because it locks onto the strongest signal and decreases background noise and interference. This mode is easy to use and an affordable upgrade from AM only.

The mode you should select for CB communication depends on your needs and the distance between users. The main advantage of AM for CB is longer range, and the main advantage of FM is sound quality at close range. Having a dual mode AM/FM CB radio allows the user to modulate between the two types of channels to find and use the best signal for communication based on their needs.

Retevis MB3A Dual-Mode AM/FM CB Radio. 
Providing more reliable communications to highway drivers.MB3A CB radio is equipped with AM/FM dual mode, allowing the driver to communicate with more users, ensuring the clarity of the call regardless of long distance or short distance.