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Description
Matek mLRS MAVLink 868/900MHz Receiver, mR900-30Unlock reliable long range communication with the Matek mR900 30 MAVLink Long Range System , designed for those who need precision and power in their UAV or telemetry setup. Operating on the 900 MHz LoRa band, this receiver offers a powerful 30 dBm RF output, ensuring consistent transmission over extended distances. With MAVLink firmware onboard and full compatibility with other LoRa chip SX126x systems, like the mR900 22, you can stay connected with
Unlock reliable long-range communication with the Matek mR900-30 MAVLink Long Range System , designed for those who need precision and power in their UAV or telemetry setup. Operating on the 900 MHz LoRa band, this receiver offers a powerful 30 dBm RF output, ensuring consistent transmission over extended distances. With MAVLink firmware onboard and full compatibility with other LoRa chip SX126x systems, like the mR900-22, you can stay connected with confidence.
Note: This unit is not compatible with ELRS 900MHz or FrSky R9 series using the SX127x chip. Compatibility matters!
Key Features:
- 30 dBm RF Power : 1000mW of power for long-range connectivity.
- LoRa SX1262 Chip with TCXO : Robust performance on the 900 MHz band (868 MHz for EU, 915 MHz for FCC).
- Bi-Directional Serial MAVLink : Ensures smooth communication between devices.
- Multiple TX Options : Supports CRSF or SBUS for versatile RC outputs.
- Compact Design : PCB measures only 29x21mm, weighing just 5.3g with antenna.
- Durable Build : Includes a heatsink for optimal thermal management under high RF power.
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: Average 340mA/Peak 850mA@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/main/firmware/pre-release-stm32
-
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.
Routing and Settings
Use mR24-30 as a TX module : tx-matek-mr900-30-g431kb-default-xxx
Use mR24-30 as a TX in SiKTelem mode : tx-matek-mr900-30-g431kb-siktelem-xxx
Modes and Link Rates
Firmware Flashing
Download STM32CubeProgrammer from ST website
mLRS firmware:
- https://github.com/olliw42/mLRS/tree/main/firmware/pre-release-stm32
-
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
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.
- Select USB
- USB1 and click Refresh
- Connect
- select "Erasing & Programming"
- Tick all sectors and click "erase selected sectors"
- Browse firmware (hex or bin file) related to the hardware.
- Click "Start Programming"
- After programming, unplug USB and plug USB back in. If red LED blinks at 2Hz, the receiver is waiting for connecting with transmitter.
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.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 1575 reviews
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Product Reviews
★★★★★ 4
Great for chewing but very sharp and mangled in a few days
Color: Blue Gator, Size: 1 Count, Color: Blue Gator, Size: 1 Count
I thought this was a fantastic idea having baking soda added for fresh clean teeth while enjoying a new toy. I wanted to review 2 main things about this.
First, if my dog enjoyed this toy. That answer would be yes absolutely! She is chewing it as I’m writing this right now. She can spend a good amount of time chewing away on this and it keeps her busy without having to use a rawhide treat which we only try to use if we re going to be gone for longer then 4 hours. The kids love playing fetch with her and she stays engaged the whole time. It is very heavy and when being thrown can become a weapon so I always supervise!
Last, the durability of the toy. So it is durable but not completely. As you can see the toy got very sharp where she has been chewing it and I’ve even noticed a little blood on it which means it’s cutting her gums. It wasn’t a large enough amount for me to take it away. It is still almost the exact same size but maybe after a month I will re edit this for more accurate on durability since it’s only been about a week that she has gotten it.
Overall, I would recommend this toy it’s a great price and keeps her attention a lot more then other toys I spent twice the amount of money on!
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Reviewed in the United States on March 9, 2022
★★★★★ 3
Too Hard
Color: Blue T-Bone, Size: 1 Count
I have a pit puppy, 20 lbs, who loves to chew. She's huge for her age, and I wanted to get her a new toy. I bought two different toys, hoping she would like one. The other toy was a hit, they both jumped at it and were excited about it, probably because it had rawhide rings that went with it. This one was immediately thrown to the side, even though my pit loves to chew on non edible toys. I think this one was just too hard, because both her, and my Chihuahua-Jack Russell, weren't interested. It didn't have any smell to attract them, which is why I bought it, because they love peanut butter stuff. I'm not going to go as far as to lick it and taste it... I'm pretty sure it won't taste like peanut butter, either. I feel so bad for my little pittie, she's just sitting here with a sad look on her face because my other dog stole the fun chew toy. I've immediately ordered another of one of those so they both have one, but I've just money wasted on this one. It's probably better they don't like it, I'd be worried about them breaking their teeth. I know it's supposed to be for power chewers, but it has no give whatsoever, just extremely hard, shiny plastic. It's useless, unless you're planning on filing it into a point and making a prison shank. Maybe you can leave it in front of the fridge for your SO to step on in the middle of the night when he goes to steal your almond milk. I'll figure out some way to use it. I did dip it into my boyfriend's peanut butter jar to let my puppy lick it, but I can do that with a spoon. I wanted her to feel like she got something, maybe my other dog will let her have a turn with the fun toy after awhile. That's the only reason I gave it 3 stars. You can dip it in peanut butter and I was being generous.
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Reviewed in the United States on March 27, 2022
★★★★★ 5
Can become brittle with sharp edges with use.
Color: Blue T-Bone, Size: 1 Count
Our little dog loved chewing this, however after chewing the toy became jagged and brittle with sharp edges that cut into her upper lip which took about 2 weeks to heal. Unfortunately the return window had closed.
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Reviewed in the United States on March 10, 2026
★★★★★ 5
Busy bone
Color: Blue T-Bone, Size: 1 Count, Color: Blue T-Bone, Size: 1 Count
My dog loves these!! Great busy bone! And they can hold it with her paws really well. It does kill your foot if you step on it barefoot in the middle of the night. This is a picture of the bone after 7months.
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Reviewed in the United States on June 1, 2026
★★★★★ 5
My Dog Loves this!
Color: Blue T-Bone, Size: 1 Count, Color: Blue T-Bone, Size: 1 Count
My dog loves her Nubbies! My Dog chews her Nubbie every morning after she has her breakfast. She sometimes wants my husband or I to hold it for her while she chews on it. I think it is really good for her teeth and gums. These last a few months for our dog who chews it every morning. After a few months the edges get a little rough from all the chewing so I throw it out and replace with a new one. These are very reasonably priced, so I always have a fresh one ready to go. She gets very excited when we get a new one out of the package..
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Reviewed in the United States on September 5, 2025