Measurement of AM Band RF Noise Levels and Station Signal Attenuation 

This report covers measurements of RF noise levels on various roadway types from open interstate highways to city streets, to determine how the noise would affect AM broadcast reception. These environments reflect the current habits of AM radio listening, which is primarily in vehicles. In addition to RF noise level, RF signal levels were measured for three AM stations operating on frequencies in the lower, middle and upper portions of the AM broadcast band. These measurements provide a better understanding of how AM radio reception is affected by RF signal strength and noise in a range of roadway environments from rural to dense urban environments.

John Kean | Cavell Mertz & Associates | Alexandria, Va., United States