Despite several advances in offshore voice communications such as satphones, marine single sideband SSB isn't going away anytime soon. That's because SSB, unlike satphones, allows an unlimited number of people to listen to a transmission at the same time. When someone has a question about the forecast, everyone can hear the question and Don's response. They're good for safety — but fun, too. The folks with SSBs are able to actively participate in all the roll calls, weather and fishing reports, and other fleet news.
Amateur radio frequency allocation is done by national telecommunication authorities. Globally, the International Telecommunication Union ITU oversees how much radio spectrum is set aside for amateur radio transmissions. Individual amateur stations are free to use any frequency within authorized frequency ranges; authorized bands may vary by the class of the station license. Radio amateurs use a variety of transmission modes, including Morse code , radioteletype , data, and voice. Specific frequency allocations vary from country to country and between ITU regions as specified in the current ITU HF frequency allocations for amateur radio.