Radio remote controls use radio waves to send commands to dissimilar devices. These are electromagnetic waves of varying frequencies, emitted straight through antennas and picked up by radio receivers.
Therefore, when you press a button on your radio remote, it sends radio waves to your music system, which decodes the signal and obeys your command. An astounding aspect of radio remotes is that they can send signals from greater distances, since radio waves travel as long as 100 feet to reach the receiver. They can even drill walls, and therefore an addition whole of contemporary appliances are now being designed with radio remotes.
Bluetooth technology also uses the principle of radio frequencies. For example, Bluetooth technology can interconnect your home theater system, mobile phone, music system, computer and television by using radio frequencies to send signals in the middle of them. It creates a wireless community of your gadgets that nothing else but speak to each other. Every appliance works on dissimilar bands of frequency.
For example, alarm and security systems work at 40 megahertz, mobile phones in the middle of 824 to 849 megahertz and an air traffic radar at everywhere in the middle of 960 to 1,215 megahertz. Now the request arises that, if there are so many frequencies traveling in the air at the same time, how do gadgets know which ones to receive and which to ignore? When developed radio remotes send radio waves, their unique digital address is also sent embedded in the waves, which the target receiver recognizes and accepts. This smart technology is already being used in cellular phones, Wireless Fidelity (WiFi) environments and cordless phones.
In the future, as our need to remotely control multiple appliances increases, radio remotes will be seen playing greater roles. Tasks in risky environments, such as space and soldiery scenarios, can be performed straight through remote control. Devices and remotes will become more sharp as radio remote control technology develops.
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