The following radio stations broadcast on AM frequency 840 kHz: WHAS in Louisville is the dominant Class A station on 840 AM, which is a United States clear channel frequency.
In Argentina
- General Belgrano in Buenos Aires
- LT12 Gral Madariaga in Paso de los Libres, Corrientes
- LU2 in Bahia Blanca, Buenos Aires
- LV9 in Salta
In Canada
In Mexico
- XETEY-AM in Tepic, Nayarit
- XEXXX-AM in Tamazula de Gordiano, Jalisco
In the United States
Stations in bold are clear-channel stations.
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