Frequency is defined as the number of times a repeating event happens per second, and is measured in Hertz (or Hz).
A typical cellular radio might be operated at 700MHz – which means that the peak of the radio wave passes 700 million times per second.
When it comes to radio waves, lower frequencies travel farther and can more easily pass through walls and obstructions. Higher frequencies are more easily blocked and are better suited for shorter range use. The advantage of higher frequencies is that there is much more bandwidth available – making it easier to increase network capacity and speeds.
To keep radios from broadcasting on top of each other, most of the radio spectrum is managed by the government and only licensed broadcasters can transmit on a range of frequencies that they “own.”« Back to Glossary Index