Radio Features:

- Very small size

- Light weight (under 4 grams without antenna)

- Available in 900MHz or 433MHz variants

- Receiver sensitivity to -121 dBm

- Transmit power up to 20dBm (100mW)

- Transparent serial link

- Air data rates up to 250kbps

- Range of approx 1 mile

- 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

- AT commands for radio configuration

- RT commands for remote radio configuration

- Adaptive flow control when used with APM

- Based on the HopeRF HM-TRP radio module, featuring an SiLabs Si1000 RF microcontroll