Brand N/A Model 868MHz Quantity 1 Piece(s)/pack Color Green Material Aluminium alloy Compatible device Open source firmware Functions R/C control Keywords 3DR Radio Telemetry Kit 868MHz Air and Ground Pair with 2pcs 3db Antenna Other Feature Specifications: 868MHz; Receiver sensitivity to -121 dBm; Transparent serial link ; Transmit power up to 20dBm (100mW); Air data rates up to 250kbps; MAVLink protocol framing and status reporting; Frequency hopping spread spectrum (FHSS); Adaptive time division multiplexing (TDM); Support for LBT and AFA; Configurable duty cycle; Built in error correcting code (can correct up to 25% data bit errors); Demonstrated range of several kilometers with a small omni antenna; Can be used with a bi-directional amplifier for even more range; Open source firmware; RT commands for remote radio configuration; AT commands for radio configuration; Adaptive flow control when used with APM; Based on HM-TRP radio modules with Si1000 8051 micro-controller and Si4432 radio module Packing List 1 x Air 868mhz 1 x Ground 868mhz 2 x 3db Antenna 1 x 1 to 1 connecting cable (15cm) 1 x 1 to 3 connecting cable (15cm)