LEFROG is a southeastern Wisconsin amateur radio club that specializes in portable operating and educational events. The club was started in 1988 by a group of hams that wanted to participate in field day. They partnered with a local scouting troupe and operated from Upper Lake Park in Port Washington Wisconsin. They also partnered with the scouts to operate Jamboree on the AIR (JOTA). Lefrog has been affiliated with the American Radio Relay League since 1992.