Please read the notice at
http://www.piersystem.com/go/doc/780/140048/ concerning 121.5 and 243 MHz beacons. If you have a 121.5/243 MHz beacon, you can no longer use it after 1 January 2007. Call the Recreational Boating Safety office at 1-800-478-6381 (Alaska only) or (907) 463-2297 if you have questions, thanks!