Guys, I've been in this hobby for 33 years and the new Futaba transmitters come with a module in the back that can be changed. The frequency is controlled by the module and can be changed as long as you stay within the band, either high or low band. If your thoughts are correct, every time I change the frequency in my synthesized Futaba 9ZAS, I am breaking the law. This is not so. If your transmitter has a frequency module in the rear the simply unplugs, then you can purchase a new module and plug it in and it will work fine, as long as you stay in the high or low band of your transmitter.