Specifically, air platform users require their equipment to comply with DO-160, which is an avaition environmental conditions and Test Procedures certification. In addition, Military customers demand increased link robustness and security protocols such as encryption and very low failure rates. ECS has adapted its TDL product family to suit the evolution of air-platforms, such as UAS which, require TDLs to be ever smaller and consume less power, whilst increasing their range and capability. ECS has developed diversity reception to maximise performance for demanding ground to ground and air to ground transmission. TDLs also need to integrate with complex wide area networks to deliver the sensor data to multiple points.