What does AM mean in a vehicle?
2 Answers
AM stands for the radio frequency band. Here is some related information about AM and FM: 1. AM represents amplitude modulation band: The broadcast frequency range, such as the medium wave (525~1610KHz) and shortwave (3200~22000KHz) marked on ordinary civilian radios. The frequency range may vary for radios of different brands. 2. FM represents frequency modulation band: The broadcast frequency range is 87.5~108MHz. Due to the different audio signal modulation methods used, the restored sound quality is clearer and far better than that of amplitude modulation. For example, in wireless TV signals, the image uses amplitude modulation, while the sound uses frequency modulation.
When people ask about AM in vehicles, I always recall those days of driving, especially during long trips, when tuning the radio to AM mode for listening to broadcasts was so convenient. Simply put, AM stands for Amplitude Modulation, a common feature in car audio systems that transmits audio by altering the amplitude of signal waves. Most news, talk shows, or sports channels use the AM band. Compared to FM (Frequency Modulation) broadcasting, AM doesn't offer as clear sound quality and may have some noise, but it boasts a wider signal coverage, making it particularly reliable in remote mountainous areas or during bad weather. I often use AM to listen to local traffic reports or weather forecasts to avoid congested routes. New car owners might want to give this feature a try—it's easily switchable on the steering wheel or control panel, simple and practical to operate.
