Matek Matek mLRS 2.4GHz Receiver mR24-30

The Matek mR24-30 MAVLink Long Range System is your ticket to unparalleled long-range connectivity. With 30dBm RF power and operating in the 2.4GHz LoRa band , this receiver delivers robust signal strength and reliability over extended distances, perfect for demanding telemetry applications or long-range control links. The MAVLink firmware and STM32G431KB processor ensure seamless data transmission, while its compact size (just 28x21mm) makes it a perfect fit for tight builds. Whether you’re running it in standard or SiKTelem mode, this receiver is a powerhouse in the field.

Key Features:

• 30dBm RF Power : Long-range connectivity with up to 1000mW transmission power.
• 2.4GHz LoRa SX1281 with TCXO : Ensures stable performance in the ISM band.
• MAVLink & RC out (CRSF or SBUS) : Supports bi-directional serial data and control signal output.
• Compact & Lightweight : Only 4.5g including antenna, making it ideal for small UAVs.
• Versatile Power Supply : Operates on a wide voltage range (4.5-13V DC).
• Easy Setup & Flashing : Use DFU mode for firmware flashing via USB or the INAV/BetaFlight configurators .
• LED Status Indicators : Clearly signal connection and binding states for ease of use.
• Customizable RF Power : Adjustable power levels from 13dBm up to 30dBm.

Specifications:

• Processor : STM32G431KB
• Firmware : mLRS
• LoRa Module : SX1281 with TCXO
• Power Levels : 13dBm to 30dBm (1000mW)
• Connector : IPEX MHF-1
• Power Supply : 4.5-13V DC @ “V” Pad
• Current Draw : 360mA @ 5V (30dBm)
• PCB Size : 28x21mm
• Weight : 4.5g (including antenna)

Modes & Firmware:

• Standard TX Module : tx-matek-mr24-30-g431kb-default
• SiKTelem Mode : tx-matek-mr24-30-g431kb-siktelem
• RX Receiver Mode : rx-matek-mr24-30-g431kb

LED Indicators:

• Red Flashing (2Hz) : Waiting for transmitter connection.
• Green Flashing (1Hz) : Successfully connected to transmitter.
• Red & Green Alternating : Binding mode.

Setup & Firmware Flashing:

Flash firmware via USB using STM32CubeProgrammer or via INAV/BetaFlight Configurator . For detailed setup, download the firmware from mLRS GitHub .

What’s in the Box:

• 1 x Matek mR24-30 Receiver
• 1 x IPEX MHF1 Sleeve Dipole Antenna (15cm)
• 1 x Heatsink (20x20x6mm)

Disclaimer: Accessories may vary based on stock availability.

Setup:

Use mR24-30 as a TX module : tx-matek-mr24-30-g431kb-default-xxx

Use mR24-30 as a TX in SiKTelem mode : tx-matek-mr24-30-g431kb-siktelem-xxx

Modes & Link Rate

Firmware Flashing:

Download STM32CubeProgrammer from ST website

• https://www.st.com/en/development-tools/stm32cubeprog.html

mLRS firmware:

• https://github.com/olliw42/mLRS/tree/v1.3/firmware/release-matek
• Targets:
  • RX Receiver: rx-matek-mr24-30-g431kb
  • TX module mode: tx-matek-mr24-30-g431kb-default
  • TX SiKtelem mode: tx-matek-mr24-30-g431kb-siktelem

Make sure DFU driver has been installed. Check out “Install DFU Drivers” in this page

Connect the Receiver USB to computer while holding the boot button in.

1. Select USB
2. USB1 and click Refresh
3. Connect
4. select “Erasing & Programming”
5. Tick all sectors and click “erase selected sectors”
6. Browse firmware (hex or bin file) related to the hardware.
7. Click “Start Programming”
8. After programming, unplug USB and plug USB back in. If red LED blinks at 2Hz, the receiver is waiting for connecting with transmitter.

*** You can also flash it via INAV or BetaFlight configurator, load firmware local, just like flashing a flight crontroller.

Com / CLI Commands:

• Install serial_port_utility
• Firmware tx-matek-mr900-30-g431kb-default, USB = COM/CLI, connect USB directly to computer, install STM VCP driver, select STM32 COM port
• Firmware tx-matek-mr900-30-g431kb-siktelem, LT1/LR1 = COM/CLI, connect USB-TTL module to LT1/LR1, select USB-TTL COM port
• more CLI commands details.

LED Status

• [Red flashing 2Hz], not connected to transmitter
• [Green flashing 1Hz], connected to transmitter
• [Red and Green alternately ], Binding mode enabled

Binding

• After powering on, press the bind button (for ca. 4 seconds) on the receiver. When in bind mode, the green and red LEDs will blink alternatively with ca 2.5 Hz.
• https://github.com/olliw42/mLRS-docu/blob/master/docs/BINDING.md

Firmware

• mLRS https://github.com/olliw42/mLRS/tree/v1.3/firmware/release-matek
• Targets:
  • RX Receiver: rx-matek-mr24-30-g431kb
  • TX module mode: tx-matek-mr24-30-g431kb-default
  • TX SiKtelem mode: tx-matek-mr24-30-g431kb-siktelem

Tips

• mLRS Github & Documentation
• mLRS Discord
• mLRS Facebook group
• If set RF power >=500mW, It is recommended to attach the heatsink to the bottom side of PCB. The gaps between fins can be used for mounting with M3 screws