User's Manual

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RAK2245 Pi HAT
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RAK2245 Pi HAT User Manual V1.2
1 Overview
1.1 Introduction
RAK2245 Pi HAT is a module with Raspberry PI form factor. It can be plugged into
Raspberry PI such as Raspberry Pi 3 Model B+ as a complete RF front end of LoRa
gateway.It supports eight channels and is available for LoRaWAN global frequency
bands. The board is the smallest LoRaWAN gateway concentrator which integrates the
Ublox MAX-7Q GPS Module and heat sink.
The board can provide low data rate LoRa radio links in ultra-fast speed. It is powered
by a Semtech SX1301 transceiver concentrator that is capable of managing packets
from many remotely dispersed end-points. Two Semtech SX125X are integrated for RF
front end I/Q transceivers.
The RAK2245 Pi HAT is a complete and cost efficient LoRa gateway solution that can
help you develop a full LoRa system. This is an economical way to create different
solutions like smart grid, intelligent farm and other IoT applications. It is also ideal for
manufacturing small series that can expand into more applications.
1.2 Main Features
 Compatible with Raspberry Pi 3 Model B+ edition.
 Integrated Ublox MAX-7Q GPS Module and heat sink.
 SX1301 base band processor, emulates 49 x LoRa demodulators, 10 parallel
demodulation paths, supports 8 uplink / 1 downlink channels.
 2 units of SX125x Tx/Rx front-ends for high/ low frequency.
 Supports 5V power supply, integrated level conversion circuit.
 TX power up to 11.73dBm, RX sensitivity down to -139dBm@SF12, BW 125KHz.
 Supports latest LoRaWAN 1.0.2 protocol.
 Supports global license-free frequency band (EU433, CN470, EU868, US915,
AS923, AU915, KR920, IN865 and AS920).
 Supports SPI, UART, I2C interface.