I found a simple and reliable way to connect the existing Remoterig Radio Control to a Wireless Lan.
The Nanostation M5 is a very professional low cost solution, with Power over Ethernet (15V PSU works), you just have to put a Ethernet Wire to the mast, and install the Nano Station M5 on the mast, that would easily connect a 3-4 Mile far away WLAN Access Point.
i didnt find any better solution on the market with the same price/value
its using 802.11an (5GHz and speed is up to 70mbit Full duplex real life througput)