because of am radio signal reach, nighttime hosts enjoyed a listenership at considerable distances such as the former head of the virginia chapter of the naacp, host jack gravely, whose evening show was heard hundreds of miles away well into neighboring states overnight. an overnight country music program headed by "big john" trimble targeted truckers in the 1970s, again taking advantage of the large nighttime coverage area of the clear channel station. broadcasting from a remote studio located at jarrell's truck stop in doswell, virginia, the show ran for eighteen years. it made big john into a national radio personality.