Have you ever seen someone playing with an RC airplane radio? Or perhaps you have seen someone play with a similar radio controlled toys, such as cars, fantasy vehicles, helicopters, sailboats, submarines, animals, trucks, blimps, motor boats, and robots? Are you the type of person who is always curious about how various technologies and items work?
Although the mechanics of how an airplane radio operates is a bit different in comparison to some of the other radio controlled toys, all rely on the same basic principle. In addition, all radio controlled toys have the same four parts, known as the transmitter, receiver, motor(s), and power source.
The transmitter is held in your hands to control the toy and sends radio waves to the receiver. The power source in the transmitter is usually a 9 volt battery that provides power for both the controls and signal transmission. However, do not confuse radio controlled toys with remote controlled toys, because radio controlled toys are always wireless. Whereas, remote controlled toys have a wire connecting the controller and toy.
As for frequency level, most radio controlled toys function at 27 MHz or 49 MHz. Transmitters can also come in single function or full function. A single function controller usually has one trigger that moves the toy forward when pressed and backwards when released. A full function controller allows you to move the toy forward, backward, forward and left, forward and right, backward and left, and backward and right.
In an RC Airplane radio system the transmitter translates the motions into a radio signal. This process is known as modulation. In turn, the transmitter broadcasts the signal.
The receiver is an antenna and circuit board inside the toy that activates the motors within when it receives the radio waves from the transmitter. In an RC airplane radio system, the receiver picks up the data from the radio waves and sends it to each servo. A servo has a horn that is attached to its shaft and a control surface, also known as an engine throttle. As the servo rotates, the horn converts it into a linear movement. Because the motion of the servo is directly proportional to the movement of the control sticks on the transmitter, the control surfaces on the airplane move the way the stick on the transmitter is moved.
The motors are responsible for turning the wheels, steering the vehicle, operating the propellers, etc. The power source can be either a rechargeable battery pack or normal batteries. Usually radio controlled toys are powered by a rechargeable battery pack.
Most radio controlled toys, such as the rc airplane radio, uses the motor to guide a particular part, while another source of power provides locomotion. In the model airplane, a small gas-powered engine turns the propeller, while the RC motor controls the flaps.
Understanding how an RC airplane radio operates is just as simple as playing with it. The four parts making up this system are the transmitter, receiver, motor(s), and power source.
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