Many thanks to SRAA contributor, Dan Greenall, who shares the following recording and notes:

Broadcaster: XERH Radio Tricolor, Mexico City 1970

Frequency: 11.880 MHz

Reception location: Ancaster, Ontario, Canada

Receiver and antenna: Hallicrafters S-52 using a longwire antenna

Notes: XERH from Mexico City, Mexico could often be heard here in southern Ontario, Canada in the Spanish language using the jingle "La RH, La RH, Radio Tricolor" to identify. They were using 11880 kHz shortwave in 1970 when this brief recording was made, and typically played "musica ranchera."