I run a Spektrum DX3S system in all of my models, but I chose to use the Marine receivers in my boats because I was a little wary about the range. The Spektrum marine receivers have two antennas - so far I haven't encountered any range problems, however I haven't tested how far I can go before I lose signal. I just run the longer antenna as high as I can above the water's surface and the shorter antenna is left inside the radio box.