Some types of aerostructures are not RF transparent at 2.4GHz, and some aircraft designs use internal RF shielding. Both types require externally mounted RC antennas. We are fabricating an aircraft using carbon fiber aerostructures that are not RF transparent at 2.4GHz. We currently have an FrSky 2.4GHz Access Archer R8 Pro Receiver attached externally to the aerostructure, but we need to move the RC Receiver internal to the aerostructure and attach external Antenna via an SMA feedthrough and SMA cable. We are looking for suggestions for a FrSky compatible receiver that has SMA connectors for mounting external antenna.