ADS-B (Automatic Dependent Surveillance – Broadcast) helps aircraft operators sense and avoid possible collisions. Used now primarily on manned aircraft, miniaturizing the equipment was essential to make it useable for small drones. pingRX measures 32mm x 15mm x 3mm, which is a fraction of the size of earlier units. The small footprint and extremely low weight of pingRX results in greatly enhanced situational awareness with almost zero impact on payload and performance.