ARRL: Field Day Package: Annual event held on the fourth full weekend in June. Includes rules, frequencies, and goals.Dayton Hamvention: The world's largest topical conference and product exhibition.Hamfest and Convention Database: Provides access to listings of all known ham conventions, swap meets and hamfests.SaskHamfest: An annual event in Regina, Saskatchewan, Canada. Includes summaries of activities, presentations, and information.The Annual Winter SWL Festival: The largest annual gathering of shortwave listeners in North America, near Philadelphia, Pennsylvania in March.