Okay, I have a 27, 49, and 57mhz cars. I am tired of hauling around so many controllers, and I don't wanna buy a multi (which doesn't accomodate all of these frequencies anyway.
Here's my solution... Run as many frequency crystals on 1 contoller as you want with a switch to select between them. You could run all of the frezuencies out there if you get the right switches.
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