Overcoming the Mode 5 SWaP Challenge in the RQ-21A STUAS

Earlier this year uAvionix's RT-2087/ZPX-B Micro IFF Transponder (ZPX-B) became the world's smallest and lightest AIMS-certified Mode 5 transponder, creating new equipage opportunities for vertical-lift aircraft, where weight savings translate to longer flight duration or heavier payload. Small unmanned aircraft systems (sUAS) especially benefit because size and weight traditionally have been deal-breakers for Mode 5 [...]