There are over 100 channels in the AM broadcast band. During the day, you can hear signals on only a few of these channels. At night, you can hear signals on almost all of them. Why?
Tag: propagation
HF Radio Propagation – Tools You Can Use
HF radio propagation is the science and art of understanding how and when shortwave radio signals travel from a transmitter to a receiver. Beyond a short distance, shortwave radio signals travel by bounding off layers in the ionosphere. Often, there are several bounces. Here’s how to figure out how and when you can expect a signal to arrive at your location.