Motorola's C-Quam system was finally chosen by the FCC as the standard in 1993, but, by that time, the luster had worn off.Broadcasters who were leery of buying AM Stereo equipment in the early 1980s (fearing that it would become obsolete at the whim of the FCC) slowly abandoned interest in the concept by the late 1980s.) AM started out as a freewheeling, 'throw up a transmitter and go with it' gamut of radio waves in its earliest days, with a couple of assigned frequencies (833 kc [primarily news and weather] and 618.6 kc [primarily music.]) and virtually no rules to allow a fair distribution of the dial for broadcasters.(By mid-1922, all five DFW stations agreed to a timesharing plan on each frequency.) November 11, 1928 was declared "National Frequency Allocation Day," when the Federal Radio Commission (FRC, predecessor to the FCC) brought organization to the dial by assigning dedicated frequencies to the strongest stations, and culling out many of the small-time opportunists who weren't serious about broadcasting.AM's popularity and far-reaching capabilities were used by the government to launch a civil defense system, CONELRAD ("CONtrol of ELectromagnetic RADiation,") the forerunner of the Emergency Broadcast System (now Emergency Alert System,) in 1951.(WRR engineer Rick Teddlie co-created the CONELRAD system.) While the nuclear threat of the Cold War prompted the dedication of a national broadcast frequency, it wasn't until 1958 that the system was first used for weather alerts.
Mc Lendon and Todd Storz's simultaneous discovery of the "Top 40" in the 1950s gave radio a special popularity among the younger generation, and his KLIF, along with KBOX and KFJZ, developed formats to capitalize on current music, especially rock and roll.
However, AM Stereo broadcasts are still conducted by several DFW stations today, and Kahn Communications has recently unveiled a improved system, "Cam-D," which might create a resurgence of interest in AM broadcasting in the future.
Also in the late 1980s, The FCC decided to extend the AM band to 1710 k Hz.
Nickname: "La Poderosa," "Gospel 540." Program: "Mambo Express." Notables: Jim Henderson, Ted Sauceman (GM,) Lazaro Saldaña, Wilbert Mejia, Yary Uhing, Luiz Munguia, Juan Benitez, Sara Treviño.
Once applied for change of license city to De Soto. Westmoreland, then Red Bird Mall (to 10/2005,) then to 5801 Marvin D. Station moved from its 43-year home at 1190 AM on 11/29/1990, although it was simulcast on both frequencies until 12/6/1990. First radio station in the world to simulcast on the internet. Program: Talknet (syndicated talk show programming,) "Weekend Workout," "Love, Sex and Relationships," "The Skip Bayless Show," "The Gary Cogill Show," "The Deborah Norville Show" (via satellite, 1991.) Notables: Terese Arena (ND; hired away from a long stint at KRLD in 2003,) Martin Birnbach, Ed Busch, Freddie Mertz (1992,) David Gold (to 1997; known as "The Conservative Freight Train,") Bob Ray Sanders, Norm Hitzges, Dr.