From 1935 to 1939, XERA was the call sign of a border blaster licensed to Ramón D. Bósquez Vitela in September 1935 to Compañía Mexicana Radiodifusora Fronteriza in Villa Acuña, Coahuila.

Months later in September 1935 he was granted a new concession via his partnership of Cía Mexicana Radiodifusora Fronteriza, a company which was represented by Bósquez as the owner; this was officially awarded on November 18 of that year.

One of his Texas engineers called XERA "the world's most powerful broadcasting station," which was a slogan that he would use again in the 1960s for two more of his engineering endeavors: the United States military transmitters which communicated with the U.S. submarine fleet, and again for the offshore pirate station Swinging Radio England.

Following the signing of various international treaties with the United States, the Mexican government forced XERA off the air in the closing days of 1939, by which time it had moved to 800 kHz.

[2] Again the equipment was removed and the location would not become the site of another, unrelated border blaster until years later following World War II in 1947.