RE: Difference between AM and FM
Wise choice! You will not be disappointed. Though they might be as much as $200 for a mid-grade 2.4Ghz radio set, you will not be disappointed because that radio will be superior to the RTR AM (and even RTR FM) radios in every way. Most 2.4Ghz radio systems have multi-model memory, so you can actually program several RCs' parameters into the smae radio.