You might have noticed that Toy RC controllers usually come in 27 MHz or 49 MHz frequencies, but what is the differences and why those two?
There’s not really any technical differences between the two frequencies, and one doesn’t perform better than the other. The real reason is so if you have two children playing, they would be able to control their own car without their control frequencies interfering with the other.
Some toy manufactures provide the end user the option of tweaking these ranges of frequencies so you can have more than two cars playing in the same proximity.
If you see an RC toy labeled as 27MHz but it says something like “Play with up to 3 vehicles at once” then what you have is a toy with selectable channels within the 27MHz range. The manufacturer rarely specifies what those specific channels are but if they use standard color coding, you might be able to figure it out:
- 26.995 MHz — Channel 1 (Brown)
- 27.045 MHz — Channel 2 (Red)
- 27.095 MHz — Channel 3 (Orange)
- 27.145 MHz — Channel 4 (Yellow)
- 27.195 MHz — Channel 5 (Green)
- 27.255 MHz — Channel 6 (Blue)
Higher end radio controlled toys do come with more ranges for frequencies all the way up to 2.4GHz, the same as your house phone.
Do any of them go faster because of the frequency? NO, it’s only so you can have more than one player in the proximity without interfering with their control.