MATEKSYS mLRS MAVLink 900MHz Receiver-mR900-30

About this product

Specifications

• STM32G431KB,  mLRS firmware

• LoRa SX1262 with TCXO

• PA/LNA SE2435L

• RF Frequency: 900MHz (868MHz, 915MHz FCC)

• 915MHz RF power: 21dBm(min) / 22dBm / 24dBm / 27dBm / 30dBm(1000mW)

• 868MHz RF power: 24dBm(min) / 24dBm / 24dBm / 27dBm / 30dBm(1000mW)

• Antenna connector: IPEX MHF-1

• TX1/RX1: Bi-directional Serial MAVLink

• TX2: RC out(CRSF or SBUS)

• one buttom for DFU mode and Bind

• Power supply: 4.5-13V DC @ “V” Pad

• Power dissipation:  340mA@5V IN(31Hz, 30dbm)

• PCB Size: 29x21mm

• Weight: 5.3g w/ antenna

• Packing:

  • 1x mR900-30

  • 1x IPEX MHF1 dipole antenna. 8cm

  • 1x Heatsink 20*20*6mm

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-mr900-30-g431kb

  • TX module mode: tx-matek-mr900-30-g431kb-default

  • TX SiKtelem mode: tx-matek-mr900-30-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

• MATEKSYS mLRS 900MHz series are NOT compatible with ELRS 900MHz & Frsky R9 series using the SX127x. They will not bind with each other.