What is the difference between 49 mhz and 27mhz

There is really very little technical differences between 27 MHz and 49 MHz when it comes to the consumer. But that doesn't mean as a consumer you can go and buy either one. The real reason why radio control toys are available in two different frequencies is that you can't play with multiple radio control toys concurrently if they are on the same frequency.

For example, if you buy your two kids two radio control cars on the same frequency, then your two kids can't play with the two cars at the same time. Being on the same frequency causes the two controller to conflict with each other. Therefore, the frequency is important in situations when you want to play with multiple radio control toys.

Having 27 MHz and 49 MHz channels allows you to play with two radio control toys simultaneously, as long as you buy a toy at each frequency. Higher end hobby toys are available in more frequencies, so check your local hobby shop if you have more than two kids, or if your kids want to play with neighborhood kids.

An example of a single-function controller is one that makes the toy go forward when the trigger is pressed and backward when it is released. To stop the toy, you have to actually turn it off. In most full-function controllers, not pressing any buttons or turning any knobs causes the toy to stop and await further commands. Controllers for more advanced RC systems often use dual joysticks with several levels of response for precise control.

Let's take a closer look at the RC truck we saw on the last page. We will assume that the exact frequency used is Here's the sequence of events that take place when you use the RC transmitter:. Inside our RC truck, we have two electric motors, an antenna, a battery pack and a circuit board. One motor turns the front wheel right or left, while the other motor turns the rear wheels to go forward or backward. The circuit board contains the IC chip, amplifier and radio receiver. A few simple gears connect the motors to the wheels.

It is really amazing how versatile the range of movement is with so few components. For more information on RC toys, radio control and related topics, check out the links on the next page. Sign up for our Newsletter! Mobile Newsletter banner close. Mobile Newsletter chat close. Mobile Newsletter chat dots. Mobile Newsletter chat avatar. Mobile Newsletter chat subscribe. How Radio Controlled Toys Work. Transmitter - You hold the transmitter in your hands to control the toy. It sends Radio waves to the receiver.

Receiver - An antenna and circuit board inside the toy receives signals from the transmitter and activates motors inside the toy as commanded by the transmitter. Motor s - Motors can turn wheels, steer the vehicle, operate propellers, etc. Power source.

A model airplane often has a small gas-powered engine to turn the propeller; the RC motor controls the flaps. A sailboat uses the wind for propulsion; the RC motor controls the rudder. A blimp uses helium or hot air for lift; the RC motors control small propellers. More Radio Controlled Toys. RC Toy Transmitter " ". Radio Control " ". You press a trigger to make the truck go forward. The trigger causes a pair of electrical contacts to touch, completing a circuit connected to a specific pin of an integrated circuit IC.

The completed circuit causes the transmitter to transmit a set sequence of electrical pulses see How Radio Works for details.

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