3DR Single TTL MINI Radio Telemetry 433MHz 500mW for PIXHAWK and APM FC

(6 customer reviews)

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SKU: 127297
  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


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Category: FPV Antennas and Trans-Receivers
Tags: Transmitter, Receiver, 250mW transreceiver, 433MHz

This 3DR Radio Telemetry 433MHz 500mW 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.

Note : Product may be available with casing or without casing

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.

Range (m)


Frequency Range


Rated Power (W)


Sensitivity (dBm)


Operating Voltage (VDC)

3 ~ 6

Max. Operating Current (mA)


Operating Temperature (°C)

-24 to 84

Module Size (LxWxH) mm

54 x 260 x 12

Antenna Length (mm)


Weight (g):


Shipping Weight 0.037 kg
Shipping Dimensions 10 × 6 × 5 cm
15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects.  Reimbursement or replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

Based on 6 reviews

4.7 overall

Add a review

  1. gauravlucky Rauthan

    good product.

    gauravlucky Rauthan

  2. Das Diwakar Bommaji (verified owner)

    Good service and lighting speed delivery ?….

    Das Diwakar Bommaji

  3. sayandas8101@gmail.com

    good quality


  4. sayandas8101@gmail.com

    good product


  5. mayurkumarchauhan19@gmail.com

    Good telemetry



    Must have for APM , Pixhawk & Naze32 for wireless telemetry. I have used this without any glitches.


SIK Firmware

Questions and answers of the customers

    Do we get both the modules , I mean ground station... Read more
  1. 0 votes
    Q Do we get both the modules , I mean ground station module and module for the actual vehicle? answer now
    Asked by mamidisettisanthosh2004 on October 31, 2023 12:14 pm

    Yes, it comes with both module.

    thank yo... Read more

  2. can we connect it to arducopter or mission planner
  3. 0 votes
    Q can we connect it to arducopter or mission planner answer now
    Asked by rishabhkumarkurucheti on August 17, 2023 8:10 pm

    Yes you can use it in mission planner

  4. How much is the antenna Gain ? What type of connec... Read more
  5. 0 votes
    Q How much is the antenna Gain ? What type of connector it is ?
    Asked by mahendar.bhatewada on September 12, 2020 9:13 pm
    There are no answers for this question yet. Answer now
  6. telemetry is not pairing properly when connected t... Read more
  7. 0 votes
    Q telemetry is not pairing properly when connected to pixhawk answer now
    Asked by krishna561999 on February 5, 2020 1:08 am

    Please send us a mail at info@robu.in with your... Read more

  8. does it require internet at receiver side
  9. 0 votes
    Q does it require internet at receiver side answer now
    Asked by Anonymous user on December 27, 2019 7:07 am

    No, It doesn't require an internet connection.... Read more

  10. does this work for pixhawk cube?
  11. 0 votes
    Q does this work for pixhawk cube? answer now
    Asked by dronaid.care on October 14, 2019 1:08 am

    Yes, it will work with pixhawk cube.

Only registered users are eligible to enter questions
Country Of Origin: China

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