Here are some of my current TYCO,s
From left to right, 49MHz mutator, 49MHz scorcher, 27MHz scorcher, 49MHz super rebound, 27MHz super rebound, 49MHz slammer
I can can have both scorchers and both super rebounds going at the same time without any interference. So me and 3 buddies can race around together. I think the mutator is the fastest, but I will take some measurements soon to find out for sure then post results.