5 links
ARRL: Field Day Package
arrl.org
Annual event held on the fourth full weekend in June. Includes rules, frequencies, and goals.
Hamfest and Convention Database
arrl.org
Provides access to listings of all known ham conventions, swap meets and hamfests.
SaskHamfest
qsl.net
An annual event in Regina, Saskatchewan, Canada. Includes summaries of activities, presentations, and information.
The Annual Winter SWL Festival
swlfest.com
The largest annual gathering of shortwave listeners in North America, near Philadelphia, Pennsylvania in March.