amplitude modulation

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Related to AM station: AM broadcasting

amplitude modulation

Altering the height (amplitude) of an electrical or acoustical wave.
See: A-mode ultrasound
References in periodicals archive ?
Over the past few months Mr Murfin has been building a mini-empire of four AM stations across the region.
So far, WLNC has worked with WEWO, another local AM station, to broadcast football coverage after dark.
They argued that a rewording of the rules state that the coverage contour of an FM translator rebroadcasting an AM station as its primary station must be contained within the greater of the 2 mV/m daytime contour or a 25-mile radius.
Simply stated, "It's extremely difficult to tune to AM stations inside a building without noise," Blanco-Pi said in an FCC petition shared by Fletcher, Heald & Hildreth'sCommLawBlogon Tuesday.
Burbank, Pasadena and 160 other cities in California use the same type of low-power AM stations for public service announcements, as do many airports including LAX.
No AM station (heard) in the (San Fernando) Valley can carry CSUN,'' Himelstein said.
commuters are frantically trying to find the AM station with Jack Buck and Hank Stram calling the game on their car radios.
One recent success is WMLB, a 5,000-watt AM station on the northern fringe of Atlanta that had been playing gospel and conventional country and losing money until it switched to Americana, said Chris Marino, a disc jockey there who has become something of an evangelist for the format.
Miller said the AM station is definitely in for change of the upgrade variety, with increases in personnel and local news.
As for programming, it was noted that most big markets have a successful AM station or two.
Since the start of his career in 1988 on a one-kilowatt AM station in Missouri, Mancow has catapulted to the top of the nation's radio marketplace.
A Dearborn MI AM station that wound up in the portfolio of the station-licensing wing of non-profit Minority Media & Telecommunications Council courtesy of Clear Channel is now on its way to a new owner.