It uses a brokered programming system, where religious leaders buy time on the station and seek donations to their ministries during their shows.
But because 1210 AM is a clear channel frequency, KMIA must reduce power at night to only 220 watts to minimize interference to other stations.
The simulcast lasted until around 2002, when KBSG (AM) flipped to a business format as KNWX (the former call sign of 770 KTTH).
In December 2004, after Bustos Media bought the station, 1210 switched to a Regional Mexican format, first as KWMG and later as KTBK.
[5] In March 2020, Bustos Media took KMIA silent, notifying the FCC that the COVID-19 pandemic made it economically unviable to keep the station on the air.