Feb 29, 2004. #1. I lived in PG County, first in Oxon Hill, then Marlow Heights mostly, in the mid 60s to the mid 70s. At this time, Top 40 radio was at its peak, and we had some radio stations that were quite popular. One was WPGC ("Good Guys Radio"), and I've been able to find some information on the old DJs and such on the Web.