People often wonder how antennas work and how they’re able to pick up the likes of radio stations and more through the use of different radio frequencies. This is because they can often seem like a complicated technical way of doing something, which helps to make it more fascinating to people with an interest in it. However, before we look at the relationship between a radio frequency, it’s important to look at what an antenna is so that everyone’s on the same page.
These are essentially a piece of a device that sticks out and picks up the information that it’s been instructed to look for; these would be the likes of a particular radio station or something else. Antennas come as both a transmitter and a receiver, the both of which are designed to do what you’d expect. Because of that, many people may wonder how this is done and how radio frequencies come into play.
How Antennas & Radio Frequency Work
Let’s say you work in a radio station and you want to get your audio across to radios and other devices. How would you go about this? Once you have it recorded, it’s a matter of transmitting it using your transmitter; this audio is then picked up by a receiver, which lets the listener hear the recording. This is done through the use of radio waves that convert the audio into energy at the transmitter and then back again at the receiver. This is what lets sound waves be transmitted from long distances; however, how far these waves can travel and be heard effectively determines on the size of the transmitter, as well as a receiver to an extent.
However, that still leaves the question as to how a radio frequency comes into play. While the exact process of this can be somewhat complicated, it boils down to something quite simple. When a radio station transmits its content, they do so at a frequency that’s reserved for their station. This is rooted in practicality, as it allows stations to broadcast at a reliable frequency that listeners can tune into when they want to listen to a particular station. As such, it means that radio stations aren’t transmitting from vastly different frequencies daily.
Think of it as a television; you expect certain content on a specific channel. Because of that, when you start watching that channel, you have a certain degree of expectations. The same is true for radio, which is why it’s become essential for stations to broadcast at a consistent frequency. By tuning a receiving antenna to this frequency, you’re able to listen to a certain station, similar to changing the channel on the television.