Last updated August 2026.
Cookies are small text files a website stores in your browser. We use very few.
Cookies we set
- Session cookie. A single cookie that keeps you signed in and protects forms against cross-site request forgery. It is removed when you sign out or when the session expires.
- Preference cookies. Occasionally used to remember a choice such as a saved search filter.
Third-party cookies
Pages that embed a map may set cookies from the map provider. Links to Join It, HamStudy, the FCC and other external sites are governed by those sites’ own cookie policies.
Managing cookies
You can block or delete cookies in your browser settings. Blocking the session cookie will prevent you from signing in, but the public parts of the site will still work.