A radio-frequency remote control works by sending a radio signal from a transmitter to a receiver, which activates motors inside the radio-controlled device. A radio-controlled toy helicopter, for example, only requires ... More »

A remote home temperature control thermostat works by connecting to a phone line and allowing users to access the thermostat settings from anywhere with a phone connection. Many systems also send alerts to users if the m... More »

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To program a Yamaha remote control, look up the model number of the TV or media device on the provided CD or user's manual, press the small Code Set button on the remote control using a pointed object such as a pen, pres... More »

Radio waves are used to transmit signals through the air, with the main benefit being that the only equipment necessary is a transmitter and receiver. There are no cables to string or holes to dig as the waves are simply... More »

Remote controlled toys are typically controlled by a transmitter, which sends a signal over a frequency to the receiver that sits in the toy being controlled. The transmitter has a power source, usually a battery, which ... More »

A carrier frequency is a technical term used to describe a frequency that is generated by a transmitter such as a radio or radar transmitter. A carrier frequency is sometimes known as a resting or center frequency. More »

One of the disadvantages of radio waves is that they cannot transmit a lot of data simultaneously because they're low frequency. In addition, continued exposure to large amounts of radio waves can cause health disorders ... More »