Finding Bandwidth: AM Radio Channels & Max Bandwidth

[tai man]

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?

 

[tech99]

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?

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.

 

[tai man]

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.

Thank you so much!

 

[AlexCaledin]

"... 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

 

[tech99]

"... 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

There is an interesting discussion on this subject in an ITU Recommendation at the following URL:-
https://www.itu.int/dms_pubrec/itu-r/rec/bs/R-REC-BS.639-0-198607-I!PDF-E.pdf
Notice that in Europe a 9kHz channel spacing is used with 4.5kHz audio restriction.