3DR Radio Telemetry Kit 433MHz 500mW The 3DR Radio Telemetry Kit has a 433Mhz frequency band and Receiver sensitivity to -124 dBm. This 3dr telemetry kit allows you to link to a flight controller to a USB or UART-equipped device such as a computer, laptop or tablet supporting a USB connection (OTG). The Radio set lets you see live data, such as live GPS position overlaid on a map, system voltage, heading, waypoint navigation and much more. The system utilizes the 433MHz band and provides a full-duplex link using HopeRF’s HM-TRP modules running custom, open-source, firmware. Using open-source MAVlink based ground station software, you can even fly your aircraft with a joystick via your computer and update settings live! Or just use it for your DIY projects that need a wireless Serial interface. This kit offers a great low price, longer range, and superior performance. The system utilizes the 433MHz band and provides a full-duplex link using HopeRF’s HM-TRP modules running custom, open-source, firmware. Features : MAVLink protocol framing status documents Frequency modulation and Spread Spectrum (FHSS) Self-adaption to time-division multiplexing Support LBT and AFA Configurable duty cycle Built-in error-correcting code(up to 25% data bit error) AT command configure data transmission RT command remote control data transmission Interchangeable air and ground 433MHz modules Micro-USB port 6-position Molex connector 500 mW maximum output power (adjustable) SMA connector 2-way full-duplex communication through adaptive TDM UART interface Transparent serial link Open-source SIK firmware Configurable through *Mission Planner and *APM Planner Based on the HM-TRP wireless module, with Si1000 8051 microcontroller and Si4432 wireless module Package Includes: 1 x Telemetry Air Module. 1 x Telemetry Ground Module. 2 x 2.5dbi Antenna  1 x Micro USB OTG cable. 1 x DF13 cable  1 x Extra 5-pin connector for both cables Swapping to connect to APM FC. Specifications: Range (m)  2500 Frequency Range 433MHz Rated Power (W) 0.5 Receive Sensitivity(dBm) -124 Voltage(V) 3.6 to 7 Dimensions  54 x 260 x 12(mm) Weight  75 grams