1、MAV Link protocol framing and status reporting 2、Supporting LBT and AFA 3、Configurable duty cycle 4、Frequency hopping spread sprectrum (FHSS) 5、Self-adaptive time division multiplex (TDM) and flow control for APM Description: This radio telemetry is ideal for the remote connection for APM and ground. Light weight with wide range and open source firmware allows you to do what other radio telemetry can't do. Features: Light weight, portable size and transparent visible serial links. MAV Link protocol framing and status reporting. Supporting LBT and AFA. Configurable duty cycle. Frequency hopping spread sprectrum (FHSS). Self-adaptive time division multiplex (TDM) and flow control for APM. Built-in error correction code, which can correct up to 25% data bit error. Small omnidirectional antenna allows several kilometers of signal coverage. Can get more range with a bi-directional amplifier. Based on the HM-TRP radio module, it features a Si1000 8051 microcontroller and Si4432 wireless module. Specifications: Compatible: For APM / Pixhawk Optional Bands: 433Mhz, 915Mhz Receiver Sensitivity: -121 dBm Transmit Power: 20dBm (100mW) Air Data Transfer Rate: 250kbps Open Source Firmware: AT commands for radio configuration, RT commands for remote radio configuration Package Weight: 47g Type: RC Accessory Package Include: 2 x Antennas 2 x Telemetry Modules 2 x Cables