Radio Tambora 94.5 FM was originally part of Radio Cadena Nacional, a group that had their offices in Downtown and operated also another legendary station RCN 1470 AM, that had old radio shows like La Tremenda Corte and Kaliman. Radio Tambora was one of the first stations that featured on FM mexican regional popular music, alongside X99 Fiesta Mexicana on 99.3 FM (Califormula) . Uniradio bought around 96-97 both stations.
On the Uniradio bussiness website (
www.uniradio.com), there is some info:
About La Invasora 94.5, i quote: "...In 1998 Uniradio continued growing and integrated 3 more radio stations into the group, one of them was Invasora 94.5. Invasora started off strong and quickly became one of the most listened radio stations in the region. Thanks to the music variety, its radio DJ´s, promotions and events, Invasora is the #1 radio station in Tijuana...."
About La Invasora 99.7 FM: "...Acquired by Uniradio in 1988, Invasora 99.7 covers mainly the San Diego area, and a part of Tijuana. Since its beginning, Invasora 99.7 came in strong and quickly positioned itself amongst the top Latin radio stations. Invasora 99.7 targets the ever-growing Latin audience in San Diego, which is constantly seeking to stay close to their culture and roots...".
I hope this helps a little bit...