Broadcasting Pioneer. In 1921 he became the first full-time announcer at Pittsburgh’s KDKA, America’s first radio station. He was the first to announce a major league baseball game (the Pirates vs. the Phillies on August 21, 1921).  Family links:  Parents:  Byron A. Arlin (1862 – 1918)  Emma Wampler Arlin (1865 – 1944)  Spouse:  Emily Pace Arlin (1897 – 1954)*  Children:  Ralph W Arlin (1921 – 2006)* *Calculated relationship