Wikipedia
WMJH
WMJH ( 810 AM) is a radio station broadcasting a Spanish-language regional Mexican music format under the name La Poderosa, licensed to Rockford, Michigan and serving the Grand Rapids, Michigan market. Owned by Birach Broadcasting, WMJH broadcasts with 3,600 watts of power during the day, which, along with its lower dial position, allows it to be heard as far north as Kalkaska, Michigan, as far east as Redford, Michigan, as far south as Three Rivers, Michigan but must sign off at night to protect WGY in Schenectady, New York. WMJH programming is available around the clock on FM translator W227CG 93.3 FM, licensed to Grand Rapids.