This article has not yet been rated on Wikipedia's content assessment scale. It is of interest to the following WikiProjects:

Engineering This article is within the scope of WikiProject Engineering, a collaborative effort to improve the coverage of engineering on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.EngineeringWikipedia:WikiProject EngineeringTemplate:WikiProject EngineeringEngineering ??? This article has not yet received a rating on the project's importance scale.

A sound of the signal in an AM receiver capable of receiving its frequency