In June 2020 Anritsu Company launched AeroShield™ MX280002A, a hardware and software solution for passive RF detection and tracking of drone activity. Consisting of a flexible Application Programming Interface (API) and demonstration program, the AeroShield tracking process uses Time Difference of Arrival (TDOA) for accurate drone positioning. Tracking speed and reliability are optimized by continuously adjusting the receivers’ signal-to-noise (SNR) ratio during the drone’s incursion. Typical drone detection and tracking range with three Anritsu Remote Spectrum Monitors (RSMs) is 500 meters but is scalable to cover wider areas with additional receivers. Alarms and reports are automatically generated for the user. The drone detection and tracking process is fully automated and active 24/7. The application continuously scans 2.4 GHz and 5.8 GHz ISM bands for drone activity. Additional custom bands can be added by the user. Proprietary algorithms have also been implemented to minimize false positives; a constant problem faced by C-UAS providers.