A Hamfest's a convention of amateur radio enthusiasts, often combining a trade show, flea market, and various other activities of interest to hams. Activities Hamfests are events organized by amateur radio enthusiasts, for social gathering and promotion of the amateur radio hobby. Typically annual or semiannual events held over a weekend, they can last from several hours to several days. Most feature a flea market where the attendees buy and sell radio and related equipment. The equipment found… (More on Hamfest)