OK. So we have a signal that is sent to a radiosmitter's antenna. How does that signal get from the antenna to the air? Let's first take a look at the signal. The signal is an electic current, and ...

AM (Amplitude Modulation) is a method of broadcasting radio and covers both Medium Wave (MW) and Long Wave (LW). Most AM radios have in-built aerials so the location of the radio is often the most ...

Back to our radio signal. The electrons in our wire are moving, but not in one direction. These electrons are moving back and forth. Actually, the wave displayed in the activity is a ...