Amateur radio emergency communications assisted in disaster relief activities for events such as the September 11 attacks in 2001 , Hurricane Katrina in 2005 , and the Sichuan earthquake in 2008 . In 2017 , the Red Cross requested 50 amateur radio operators be dispatched to Puerto Rico to provide communications services in the wake of Hurricane Maria
Sichuan earthquake
2008 Sichuan earthquake
History of amateur radio