In case of disasters, hams exchange health and welfare information with other hams. Some hams use Radioteletype , with computer screens replacing noisy teletype machines of the past. Some ham radio operators use the very reliable Morse code , while others use voice. There are also many digital modes as well,many hams also use computers that are used in radio modems to communicate in various networks. Today, There are approximately 675,000 Amateur Radio operatiors in the United States and more than 2.5 million around the world.
Hams use a variety of frequencies For communications.
Hams are able to use many frequency bands across the radio spectrum, these frequencies are allocated by Ham radio is for anyone who likes to communicate with others. It is also for anyone who enjoys experimentation. Licensed amateur radio operators communicate with each other close by, across the country, around the world or even with astronauts in space. Amateur radio is a worldwide group of people who communicate with each other over a wide frequency spectrum using many different types of transmitting modes. Ham radio is for anyone who likes to communicate with others.