It is half the bandwidth, 5 kHz.tai man said:The commercial AM radio channels are separated by 10 kHz. What is the maximum bandwidth of the base-band signal each of these channels can carry?
Thank you so much!tech99 said:It is half the bandwidth, 5 kHz.
AM transmission requires two sidebands, one each side of the carrier, and each has the same width as the baseband.
There is an interesting discussion on this subject in an ITU Recommendation at the following URL:-AlexCaledin said:"... to fit more transmitters on the MW broadcast band in the United States, maximum transmitted audio bandwidth is limited to 10.2 kHz by a National Radio Systems Committee (NRSC) standard adopted by the FCC in June 1989, resulting in a channel occupied bandwidth of 20.4 kHz."
https://en.wikipedia.org/wiki/AM_broadcasting#Limitations
Bandwidth is the range of frequencies that can be transmitted over a radio channel. In AM radio, bandwidth is important because it determines the quality of the audio signal that is transmitted. A wider bandwidth allows for better audio quality, while a narrower bandwidth can result in a lower quality signal.
The available bandwidth for an AM radio channel can be found by subtracting the highest frequency from the lowest frequency within the channel. This is known as the bandwidth allocation. For example, if an AM radio channel has a highest frequency of 1600 kHz and a lowest frequency of 540 kHz, the bandwidth would be 1060 kHz.
The maximum bandwidth for an AM radio channel is 10 kHz. This is the standard bandwidth set by the Federal Communications Commission (FCC) in the United States. Any signal that exceeds this bandwidth is considered to be out of compliance and may result in interference with other radio channels.
Bandwidth can affect the range of an AM radio signal in two ways. First, a wider bandwidth can allow for a stronger and more reliable signal, which can increase the range of the signal. Second, if the bandwidth is too narrow, it can restrict the range of the signal and make it difficult for the signal to travel long distances without losing quality.
The bandwidth of an AM radio channel is determined by the FCC and cannot be changed by individual broadcasters. However, broadcasters can use different encoding techniques and technologies to optimize their use of the available bandwidth and improve the quality of their audio signal.