The aviation-grade external antennas are perfect for aircraft that regularly exceed 60kts. These are monopole designs which require a ground plane for an optimum range. If these antennas are installed on a metal skinned airframe, then this will give an excellent range. If these antennas are going to be installed in a fabric or composite skinned airframe, then a ground plane will be required. It's recommended that a sheet of metal 200x200mm is used. Futher installation instructions can be found here. This pack includes.
1 x 1090MHz TED Aerial with BNC connector.
1 x 869.5MHz Bespoke Engineered Antenna with BNC connector.