-60% Out-of-Stock Telemetry Radio Telemetry 915Mhz 0938 €25.96 €64.90 The Drotek Radio Telemetry (915Mhz) is a 3DR Radio system 100% compatible. Designed as an open-source Xbee replacement radio set, it offers a longer range (approx one mile) and superior performance to Xbee radios, for a lower price. View