- Date: ...March 1925-1929... ( Note: Station is shown in an April 1929 RADEX listing, but a note from a reader in the same issue indicates that at least one other Mexican station had been changed from CZE to XFX, so this date is questionable.)
- Frequency:
- 901 kHz (...March 1925...)
- 923 kHz (...January 31, 1927...)
- Location:
- Mexico City, Mexico (...March 1925-1929...)
- Owner of license:
- Excelsior & Cia Parker (...March 1925...)
- El Excelsior (...January 31, 1927...)
- Pablo Langarica (...1929...)