Category: Protocols & RF Technology

The RC control link landscape has changed significantly in recent years. ExpressLRS (ELRS), a modern open radio protocol built upon Semtech LoRa hardware, has introduced long-range performance and extremely low latency typically associated with expensive proprietary systems. Meanwhile, CC2500-based protocols such as FrSky ACCST and Futaba SFHSS represent the legacy 2.4 GHz ecosystem that dominated…

Before the rise of ELRS and modern bidirectional radio systems, the CC2500 chipset and associated multiprotocol firmware served as a functional backbone for many RC radios and receivers. Although often overshadowed by newer standards, CC2500 remains relevant due to its wide compatibility, low hardware cost and broad protocol support spanning helicopters, fixed-wing aircraft and early…