Did you know that the idea of a radio was developed in the 1890s? In 1895 the same inventor sent a wireless Morse Code message to a source that was more than a kilometer away. If you have ever wondered how things such as walkie-talkies operate or a wireless radio, we are here to teach you everything there is to know.
Read on to learn the ins and outs of wireless radio.
Table of Contents
How Do Wireless Radios Work?
Electromagnetic waves are transmitted and received. The radio signal itself moves back and forth extremely quickly in the form of an electronic current. Then, a transmitter radiates the field with the help of an antenna and then a receiver picks up the field and translates it to what we can hear via a radio.
You can check out this website with Motorola radios to give you an idea of the different ranges you can reach with different models and to help you choose from some of the best radios around.
The Wireless World
In case you are not aware our lives nowadays are really affected by radio waves. Think about your morning how you probably start your day with an alarm from your smartphone – you can thank radio waves for this convenience.
Then while you’re eating breakfast, do you turn on the television or the radio? Radio waves are what makes it possible for you to receive these bits of video and audio. On your way to work or to run errands you might use the GPS on your phone or in your car, and once again you can thank radio waves for making this possible.
How Do the Frequency Waves Get From Place to Place?
The reason that we are able to pick up a cell phone out of our purse or pocket and call a friend no matter where they are in the world is the same basic method that every radio uses. This is with the help of both a transmitter and a receiver.
The transmitter takes the information through the air in the form of a sine wave. Then the sine wave goes through the air and then it is caught by the receiver. Here the receiver decodes the information that is in the sine wave and it extracts this info whether it is a voice, music, or another piece of data.
Keep in mind that the sine wave on its own doesn’t contain any of the data that is needed, it is actually an empty signal. The sine wave needs to be modulated, which is when another layer of useful information is added to the wave.
The three main methods of modulation include pulse, amplitude, and frequency modulation.
Feeling Like a Wireless Radio Technology Pro?
Now that you have learned everything there is to know about wireless radio and how it works, you can truly understand how radio waves work in practice.
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