3DR Single TTL MINI Radio Telemetry 433MHz 250mW for PIXHAWK and APM


  1. A range of several Kilometers with a small Omni Antenna
  2. Can be used with a bi-directional amplifier for even more more range
  3. Open Source Firmware
  4. At command for radio configuration
  5. RT Commands for Remote radio Configuration
  6. Adaptive flow control when used with APM
  7. Based on the Hope RF HM-TRP radio Module
  8. Featuring a SiLabs Si1000 RF Microcontroller
  9. Support OTG of Android Cellphone and Computer

2,199.00 3,999.00

Product Details:

Material Plastic
Usage/Application Outdoor
Weight Light weight (under 4 grams without antenna)
Frequency band 433Mhz
Receiver sensitivity -117 dBm
Transmit power up to 20dBm (100mW)
Air data rates up to 250kbps
Range approx 1 mile with supplied antennas


This 3DR Radio Telemetry 433MHz 250mW Set 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 new V2 radios, no longer have a separate Air/Ground module, as both transceivers can use UART or USB connections and supports both modes. The Radio set not only lets you see live data, such as live GPS position overlaid on a map, system voltage, heading, waypoint navigation even artificial horizon and so much more.

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.

Note: The reference to APM refers to the ArduPilot project, a family of open source autopilots based on the Arduino open-source computing platform, developed by 3DR and the open source community. It consists of a choice of ArduPilot Mega (APM) electronics and a range of free software versions for different vehicles and is governed by an open source creative commons license.

Important Note:  Do not turn ON the 3DR telemetry without attaching the antenna.

Features :

  1. MAVLink protocol framing status documents
  2. Frequency modulation and Spread Spectrum (FHSS)
  3. Self-adaption to time division multiplexing
  4. Support LBT and AFA
  5.  Configurable duty cycle
  6. Built-in error correcting code(up to 25% data bit error)
  7. AT command configure data transmission
  8. RT command remote control data transmission
  9. Interchangeable air and ground 433MHz modules
  10.  Micro-USB port
  11. 6-position Molex connector
  12. 250mW maximum output power (adjustable)
  13. SMA connector
  14. 2-way full-duplex communication through adaptive TDM
  15. UART interface
  16. Transparent serial link
  17. Open-source SIK firmware
  18. Configurable through *Mission Planner and *APM Planner
  19. Based on the HM-TRP wireless module, with Si1000 8051 microcontroller and Si4432

Package Includes :

1 x Radio Telemetry Base Station (USB Connection).

1 x Telemetry Transreceiver (Pin Header).

2 x 2.5dbi Antenna.

1 x 5-pin Lead cable for APM FC.

1 x 6-pin Lead cable for PIXHAWK FC.

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