Please Help: I am looking for a "full range" RC Radio for use in a carbon composite aircraft. I need to mount the antenna external to the aerostructure. I want to use two 2.4GHz antenna connected via an SMA connector mounted on the aerostructure with the cable going to the the RC Radio. So what I need is a means to connect an external antenna to either a FrSky or FlSky RC radio mounted inside the aerostructure via an SMA Cable. Any suggestions? I am currently using an FrSky 2.4GHz Access Archer R8 Pro Receiver.