For radio amateurs, several companies manufacture equipment and various components for construction. Yaesu is one of the best-known manufacturers of amateur radio equipment, Kenwood a Icom, For radio amateurs, several companies manufacture equipment and various components for construction, For radio amateurs, several companies manufacture equipment and various components for construction. For radio amateurs, several companies manufacture equipment and various components for construction, For radio amateurs, several companies manufacture equipment and various components for construction.