By contrast a typical plastic portable AM radio of today is built at as low a cost as possible with very little attention to the quality of the sound it delivers. Even with a bandwidth-restricted ...

BMW, Mazda and Volkswagen are among the automakers that have decided to stop putting AM radios in new electrical vehicles, citing electric engines interfering with the sound of AM stations.

With AM radio, the amplitude, or overall strength, of the signal is varied to incorporate the sound information. With FM, the frequency (the number of times each second that the current changes ...

Below is a list of all the BBC's radio services that are available on FM and AM. We have listed the frequency ... services are can also be found on BBC Sounds along with BBC's digital-only radio ...