XEX-FM
| 
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|---|---|
| Broadcast area | Greater Mexico City | 
| Frequency | 101.7 MHz | 
| Branding | Los 40 | 
| Programming | |
| Language | Spanish, English | 
| Format | Contemporary hit radio | 
| Ownership | |
| Owner | 
 | 
| History | |
| First air date | October 1, 1975 | 
| Technical information | |
| Class | C1 | 
| ERP | 51,190 watts | 
| HAAT | 172 m (564 ft) | 
| Transmitter coordinates | 19°23′40″N 99°10′26″W / 19.39444°N 99.17389°W | 
| Links | |
| Webcast | Listen live | 
| Website | los40.com.mx | 
XEX-FM (101.7 FM) is a commercial radio station in Mexico City. Broadcasting from a tower atop the World Trade Center Mexico City, XEX-FM airs a contemporary hit radio format and is the flagship station of the Mexican Los 40 network. Most songs in the playlist are hits in English.
XEX-FM is a Class C1 station. It has an effective radiated power (ERP) of 51,190 watts.