Getting a ham radio license can open up a whole new world of discovery, community, friendship, and public service. They can take part in contests with their fellow hams, meet each other in person, and even attend ham conventions with hundreds or even thousands of other ham radio enthusiasts. During natural disasters and other emergencies, ham operators can literally save lives, as they are often called upon to perform vital communication services when all others are inoperable. These are just a few of the reasons many ham radio operators think ham radio is one of the most fulfilling and rewarding hobbies a person can have. There are three different ham radio licenses available. Until a few years ago there were six.
Today, there are over , people who hold an amateur radio license. There are two main reasons for this renewed interest in ham radio. The first one is the decision by the Federal Communications Commission in to stop requiring ham operators to know how to send and interpret Morse code. For decades, a person had to pass a Morse code test in order to receive a license. When the requirement was dropped, a lot more people began applying for a ham radio license. The other factor, of course, is technology.
Additional reference material is listed on my Study Materials page. Which of the following precautions should be taken when measuring high voltages with a voltmeter? What is the voltage across a ohm resistor if a current of 2 amperes flows through it?