The N3PX.com web site is the information center for the
Southern Patuxent Radio Club and the Calvert Amateur Radio Club located in southern
Maryland. The two sister clubs, with well over 100 individual users, sponsor the 145.350
(-,156.7) wide area repeater in Prince Frederick, MD that covers approximately
60 air miles (or about 11,500 square miles) in MD,DC and VA and the 147.195 (+) D-Star repeater in Hollywood, MD that covers St. Mary's county as
well as middle to southern Calvert.
clubs also sponsors the Southern Maryland Link System that connects the 145.350
repeater in Prince Frederick to the W4GMF 146.895 (+,146.2) near Montross, VA
and the W4KGC 146.745 (-107.2) in King George, VA with a UHF backbone system.