Hamfest and Convention Database
- Provides access to listings of all known ham conventions, swap meets and hamfests.
- http://www.arrl.org/hamfests.html

Dayton Hamvention
- The world's largest topical conference and product exhibition.
- http://www.hamvention.org/

ARRL: Field Day Package
- Annual event held on the fourth full weekend in June. Includes rules, frequencies, and goals.
- http://www.arrl.org/contests/announcements/fd/

The Annual Winter SWL Festival
- The largest annual gathering of shortwave listeners in North America, near Philadelphia, Pennsylvania in March.
- http://swlfest.com/