I just went through this with my GW MX2 30 ccer.
I had both my switches up front close to the firewall and when I did a range check I wasn't able to get more than 65 ft.
I had to relocate my RX switch.
I have a futaba 9c with a hitec supreme RX on Nimhs.
main thing to do is range check.
If your not getting a 100 ft with a collasped ant don't fly
I end up with a 15 ft difference beteewn the engine running and stopped 150/135 ft