Introduction
The concentrator module RAK831 is targeted for a huge variety of applications like Smart Metering, IoT and M2M applications. It is a multi- channel high performance Transmitter/receiver module designed to receive several LoRa packets simultaneously using different spreading factors on multiple channels. The concentrator module RAK831 can be integrated into a gateway as a complete RF front end of this gateway. It provides the possibility to enable robust communication between a LoRa gateway and a huge amount of LoRa end-nodes spread over a wide range of distance. The RAK831 needs a host system for proper operation.
This is a ideal modular products to help you realize the whole Lora system development. With the USB-SPI converter module FT2232, you can quickly to make the software development in your PC. But also, you can integrate the concentrator module to your production product to realize the Lora gateway function.This is very economic way to address for a huge variety of applications like Smart Grid, Intelligent Farm,intelligent Farm and Other IoT applications.
The RAK831 needs a host system like Raspberry Pi or WisAP(OpenWRT based) or WisCam for proper operation . The host processor can be a PC or MCU that will be connected to RAK831 via USB or SPI RAK831 is able to receive up to 8 LoRa packets simultaneously sent with different spreading factors on different channels. This unique capability allows to implement innovative network architectures advantageous over other short range systems:
End-point nodes (e.g. sensor nodes) can change frequency with each transmission in a random pattern. This provides vast improvement of the system robustness in terms of interferer immunity and radio channel diversity.
Key Features
- Compact size 80.0 x 50.0 x 5.0mm
- LoRaTM modulation technology
- Frequency band 433,470, 868,915MHz
- Orthogonal spreading factors
- Sensitivity down to -142.5 dBm
- Maximum link budget162 dB
- SPI interface
- SX1301 base band processor
- Emulates 49 x LoRa demodulators
- 12 parallel demodulation paths
- 1 (G)FSK demodulator
- 2 x SX1257 Tx/Rx front-ends High frequence
- 2 x SX1255 Tx/Rx front-ends low frequence
- Supply voltage 5 V
- RF interface optimized to 50
- Output power level up to 23 dBm
- GPS receiver (optional)
- Range up to 15 km (Line of Sight)
- Range of several km in urban environment - Status LEDs
- HAL is available from
https://github.com/RAKWireless/RAK831_LoRaGateway
Parameter
| Operating Votalge |
DC5V |
| Operating Temperature |
40℃ to 85℃ |
| Radio Chipset |
Sx1301 |
| RF Output Power |
23dBm |
| Input Signal |
Not more than 13dBm |
| Receiver Sensitivity |
Up to 142.5dBm(@293bps) |
| GPS Receiver |
Optional |
| SNR Handling |
9dB |
| Control Interface |
SPI |
| Dimension |
80x50x5mm |
| Firmware |
Gateway HAL |
| Range |
Up to 15km |
| Frequency Band |
433MHz/ 868MHz/915MHz |
Applications
- Smart Metering
- Wireless Star Networks
-.Home-,Building-,Industrial automation
- Remote Control - Wireless Sensors
- M2M, IoT
- Wireless Alarm and Security Systems
UsefulLink
Download
Datasheet
3 D file
Hardware Design
Software Development
Application Notes
Certification Report
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