1240 AM

The following radio stations broadcast on AM frequency 1240 kHz: 1240 AM is a regional (Class B) frequency outside the coterminous 48 United States (Alaska, Hawaii, Puerto Rico, & U.S. Virgin Islands), and a local frequency (Class C) within the coterminous 48 United States.

Argentina

 * Cadena Uno in Argentina
 * LRI218 Universidad Nacional del Sur in Bahia Blanca, Buenos Aires

Mexico

 * XEBQ-AM in Guaymas, Sonora
 * XECG-AM in Nogales, Sonora
 * XEMEFM-AM in Morelia, Michoacan
 * XERD-AM in Pachuca, Hidalgo
 * XEWG-AM in Cd.Juarez, Chihuahua

United States
Between 1951 and 1963, the frequency was also one of two used for the United States' CONELRAD emergency broadcasting system, the other frequency being 640 AM.