Matek MLRS MAVLink 900MHz Receiver, MR900-22
by Matek Systems

mR900-22 900MHz LoRa Module with mLRS Firmware

The mR900-22 is a compact and efficient 900MHz LoRa module, designed for long-range communication in UAVs and remote control systems. Powered by the STM32WLE5CC with TCXO and running mLRS firmware, this module supports RF frequencies of 868MHz and 915MHz (FCC), making it versatile for various regional applications. It offers adjustable RF power outputs ranging from -9dBm to 22dBm (158mW), ensuring reliable connectivity even in challenging environments.

The module features bi-directional Serial MAVLink communication via TX2/RX2, and RC output options (CRSF or SBUS) via TX1. It is equipped with an IPEX MHF-1 antenna connector and comes with an 8cm dipole antenna. The mR900-22 is designed for ease of use with two buttons for boot mode and binding, making it simple to integrate into your UAV or remote control setup.

Specifications:

• MCU: STM32WLE5CC with TCXO, mLRS firmware
• RF Frequency: 900MHz (868MHz, 915MHz FCC)
• RF Power Options: -9dBm(min), 0dBm, 10dBm, 20dBm, 22dBm (158mW)
• Antenna Connector: IPEX MHF-1
• Communication: TX2/RX2 Bi-directional Serial MAVLink, TX1 RC out (CRSF or SBUS)
• Power Supply: 4-9V DC @ “V” Pad
• Power Dissipation: 67mA @ 5V IN (31Hz, 22dBm)
• Dimensions: 24 x 15.5 mm
• Weight: 2.3g with antenna
• LED Status Indicators: Red flashing 2Hz (not connected), Green flashing 1Hz (connected), Red and Green alternately (binding mode)

In the Box:

• 1x mR900-22 module
• 1x IPEX MHF1 dipole antenna (8cm)

Binding Instructions: After powering on, press the bind button for approximately 4 seconds. The LEDs will blink alternately in red and green at 2.5 Hz when in binding mode.

Firmware:

• mLRS Firmware: mLRS GitHub Repository
• Targets: rx-matek-mr900-22-wle5cc-xxx