RAK7243C WisGate Developer D3+ Gateway Datasheet
Overview
Description
The RAK7243C WisGate Developer D3+ Gateway is a device that consists of Raspberry Pi 3B+, RAK2245 Pi HAT which includes a GPS module and a Heat Sink for better performance and thermal heat dissipation management, and a RAK2013 Cellular Pi HAT and its housing is built with an aluminum casing.
For the build-in RAK2245 Pi HAT, it uses the SX1301 chip from Semtech which built-in LPWAN concentrator IP core is a powerful digital signal processing engine. It is able to receive up to 8 LoRa packets simultaneously sent with different spreading factors on different channels and is available in multiple variants so it can be used for international standard bands. This unique capability allows to implement innovative network architectures advantageous over other short range systems. For the build-in RAK2013 Cellular Pi HAT, it supports optional QUECTEL BG96 / EG91 / EG95 which can support NB-IOT / CAT-M / CAT1 LTE / CAT4 LTE. It follows Raspberry Pi specifications and is easy to mount with Raspberry Pi and RAK2245 Pi HAT module.
Pilot Gateway Pro is ideal for prototyping, proof-of-concept demonstration or the evaluation. It includes a ready to use gateway OS that can be connected to a LoRaWan® server. Also, it is developer friendly and simple even for no-so-techy users to set up the system for LoRaWAN®. It has to be the best value and function for connectivity to address a variety of applications like Smart Grid, Intelligent Farm and other IoT enterprise applications.
Features
- Preassembled, fully functioning gateway
- SX1301 base band processor, emulates 49 x LoRa demodulators 10 programmable parallel demodulation paths, support 8 uplinks channel, 1 downlink channel
- Support optional Cellular module(Quectel BG96 or EG91 or EG95) for NB-IOT / CAT-M / CAT1 LTE / CAT4 LTE
- Built-in the Ublox MAX-7Q GPS Module
- Built-in Heat Sink for thermal heat dissipation management
- Supports 5V/2.5A power supply
- TX power up to 27dBm, RX sensitivity down to -139dBm@SF12, BW 125KHz
- Frequency band support: EU433, CN470, RU864, IN865, EU868, US915, AU915, KR920, AS923
- Housing with top cover, body, bottom cover with riveted motherboard standoff
- Includes Pi ready 'ID EEPROM', GPIO setup and device tree can be automatically configured from vendor information
- Supports fully open source code connected to a LoRaWAN server
Specifications
Overview
The overview covers the board overview of RAK7243C and its block diagram that discusses the basic concept of LoRaWAN system.
Board Overview
Figure 8725: RAK7243C Outer DimensionsBlock Diagram
The following figure shows the basic concept of the of the system for LoRaWAN®. RAK7243 Pilot Gateway is the central hardware solution for all LoRa based radio communication. It receives and transmits radio messages. The processing of radio messages as well as the protocol related tasks are done by an embedded host system (Raspberry Pi). Received and processed radio messages are being sent to a LoRaWAN server. The concrete segmentation of the protocol related tasks is outside the scope of this document
Figure 8726: RAK7243C WisGate Developer D3+ Gateway System StructureHardware
The hardware specification is categorized into six parts. It discusses the interfacing, pinouts, and the corresponding functions and diagrams of the board. It also covers the parameters and the standard values of the antenna, and the electrical and environmental requirements.
Interfaces
Figure 8727: RAK7243C InterfacesLTE Antenna(DIV) is only used for the EG91 / EG95 Version and reserved for the BG96 Version.
Pin Definition
The RAK7243C WisGate Developer D3+ Gateway is composed of the LPWAN Concentrator RAK2245 Pi HAT and the RAK2013 Pi HAT |
RAK2245 Pi HAT
Figure 8728: RAK2245 Pi HATRAK2245 Pi HAT(Model Name is: RAK2243) is an LPWAN Concentrator board that follows the Pi HAT standard and can be mounted to Pi board with 40-pin connector.
- For detailed information about the RAK2245, Go to the RAK2245 Pi HAT Datasheet.
Figure 8729: LoRa Hardware StructureRAK2013 Cellular
Figure 8730: RAK2013 Cellular Pi HATRAK2013 is an add-on board following Raspberry Pi HAT standard. It can transmit UART data from Raspberry Pi to a Cellular network. It can support several cellular protocols, such as NB-IOT, CAT-M, CAT1 or CAT 4, by choosing different modular on the board.
The RAK2013 integrates an audio codec and amplifier on it, with the carrier operator's network, it can support VoLTE function. For easy use, there are earphone connector, MIC connector and speaker connector with audio amplifier
- For detailed information about the RAK2013, go to RAK2013 Cellular Datasheet.
Figure 8731: Cellular Hardware StructureRF Characteristics
Operating Frequencies
The Pilot Gateway supports all LoRaWAN frequency channels as below. Which is easy to configure while building the firmware from the source code.
| Region | Frequency (Mhz) |
|---|---|
| Europe | EU433, EU868 |
| China | CN470 |
| North America | US915 |
| Asia | AS923 |
| Australia | AU915 |
| Korea | KR920 |
| Indian | IN865 |
| Russia | RU864 |
LoRa
Transmitter RF
The RAK2245 has an excellent transmitter performance. It is highly recommended to use an optimized configuration for the power level configuration, which is part of the HAL. This results in a mean RF output power level and current consumption
| PA Control | DAC Control | MIX Control | DIG Gain | Nominal RF Power Level (dBm) |
|---|---|---|---|---|
| 0 | 3 | 8 | 0 | -6 |
| 0 | 3 | 10 | 0 | -3 |
| 0 | 3 | 14 | 0 | 0 |
| 1 | 3 | 9 | 3 | 4 |
| 1 | 3 | 8 | 0 | 8 |
| 1 | 3 | 9 | 0 | 10 |
| 1 | 3 | 11 | 0 | 12 |
| 1 | 3 | 12 | 0 | 14 |
| 1 | 3 | 13 | 0 | 16 |
| 2 | 3 | 12 | 0 | 17 |
| 2 | 3 | 13 | 0 | 19 |
| 2 | 3 | 14 | 0 | 20 |
| 3 | 3 | 10 | 0 | 0 |
| 3 | 3 | 11 | 0 | 0 |
| 3 | 3 | 12 | 0 | 25 |
| 3 | 3 | 13 | 0 | 26 |
| 3 | 3 | 14 | 0 | 27 |
- T=25℃, VDD=5V (Typ.) if nothing else is stated.
| Parameter | Condition | Min | Typ. | Max |
|---|---|---|---|---|
| Frequency Range | 863 Mhz | 870 Mhz | ||
| Modulation Techniques | FSK/LoRa | |||
| TX Frequency Variation vs. Temperature | Power Level Setting : 20 | -3 Khz | +3 Khz | |
| TX Power Variation vs. Temperature | Power Level Setting : 20 | -5 dBm | +5 dBm | |
| TX Power Variation | -1.5 dBm | +1.5 dBm |
Receiver RF
It is highly recommended, to use optimized RSSI calibration values, which is part of the HAL v3.1. For both, Radio 1 and 2, the RSSI-Offset should be set - 169.0. The following table gives the typical sensitivity level of the RAK2245.
| Signal Bandwidth (Khz) | Spreading Factor | Sensitivity (dBm) |
|---|---|---|
| 125 | 12 | -139 |
| 125 | 7 | -126 |
| 250 | 12 | -136 |
| 250 | 7 | -123 |
| 500 | 12 | -134 |
| 500 | 7 | -120 |
Cellular
The Pilot Gateway supports different frequency bands according to the modular mounted on the board.
BG96 Module
BG96 is a series of LTE Cat M1/Cat NB1/EGPRS module offering a maximum data rate of 300Kbps downlink and 375Kbps uplink.
| Frequency | BG96 |
|---|---|
| LTE (FDD-LTE) | B1 / B2 / B3 / B4 / B5 / B8 / B12 / B13 / B18 / B19 / B20 / B26 / B28 |
| LTE (TDD-LTE) | B39 (for CAT M1 only) |
| EGPRS | 850 / 900 / 1800 / 1900 MHz |
EG91 Module
Quectel EG91 is a series of LTE category 1 module optimized specially for M2M and IoT applications. It delivers M2M-optimized speeds of 10Mbps downlink and 5Mbps uplink. These make EG91 an ideal solution for numerous IoT applications that are not reliant on high speed connectivity but still require the longevity and reliability of LTE networks
| Frequency | EG91-E | EG91-NA |
|---|---|---|
| LTE FDD | B1 / B3 / B7 / B8 / B20 / B28A | B2 / B4 / B5 / B12 / B13 |
| WCDMA | B1 / B8 | B2 / B4 / B5 |
| GSM /EDGE | 900 / 1800 MHz | |
| Region | Europe | North America |
EG95 Module
Quectel EG95 is a series of LTE category 4 module optimized specially for M2M and IoT applications. Adopting 3GPP Rel. 11 LTE technology, it delivers 150Mbps downlink and 50Mbps uplink data rates
| Frequency | EG95-E | EG95-NA |
|---|---|---|
| LTE FDD | B1 / B3 / B7 / B8 / B20 / B28A | B2 / B4 / B5 / B12 / B13 |
| WCDMA | B1 / B8 | B2 / B4 / B5 |
| GSM / EDGE | 900 / 1800 MHz | |
| Region | Europe | North America |
Antenna Specifications
LoRa
The LoRa Antenna with RP-SMA male connector is shown in the figure below:
Figure 8732: LoRa Antenna OverviewAntenna Dimension
The antenna's mechanical dimension is shown below:
Figure 8733: LoRa Antenna Dimension in mmAntenna Parameters
| Items | Specifications |
|---|---|
| Voltage Standard Wave Ratio (VSWR) | 1.5:1 |
| Gain | -2.0 dBi |
| Working Temperature & Humidity | T:-35 ºC ~ +80 ºC, H: 0% ~ 95% |
| Storage Temperature & Humidity | T:-40 ºC ~ +85 ºC, H: 0% ~ 95% |
LTE
For module built-in BG96, there is one LTE antenna and one GPS antenna. For module built-in EG91/EG95, there are two LTE antennas, and no GPS antenna with the module.
The LTE antenna for the Developer Gateway with RP-SMA male connector covers the working frequency band from 824MHz to 2690MHz. The antenna is shown below.
Figure 8734: LTE AntennaAntenna Dimension
Figure 8735: LTE Antenna DimensionAntenna Parameters
| Items | Specifications |
|---|---|
| Frequency (MHz) | 700 / 800 / 880 / 960 / 1710 / 1880 / 2170 |
| Voltage Standard Wave Ratio (VSWR) | 9.3 / 4.6 / 3.6 / 4.9 / 9.3 / 4.4 / 15 |
| Gain (dBi) | 1.63 / 1.84 / 1.96 / 2.23 / 0.03 / 0.01 / 1.97 |
| Working Temperature & Humidity | T:-35 ºC ~ +80 ºC, H: 0% ~ 95% |
| Storage Temperature & Humidity | T:-40 ºC ~ +85 ºC, H: 0% ~ 95% |
GPS
The GPS antenna with SMA Male Connector for Developer Gateway is shown below
Figure 8736: GPS AntennaGPS Antenna Dimension
Figure 8737: GPS Antenna DimensionsGPS Environmental Requirements
The antenna environmental requirements are listed in the table below:
| Conditions | Temperature | Humidity |
|---|---|---|
| Working | -35 ºC ~ +80 ºC | 0% ~ 95% |
| Storage | -40 ºC ~ +85 ºC | 0% ~ 95% |
GPS Antenna Parameters
Antenna specifications are listed in the table below:
| Item | Specifications | PET |
|---|---|---|
| Range of Receiving Frequency | 1575.42±1.1 | ±2.5 |
| Center Frequency (MHz) w/ 30mm2 GND plane | 1575.42 | ±3.0 |
| Bandwidth (MHz) (Return Loss ≤ -10dB) | ≥10 | ±0.5 |
| VSWR (in Center Frequency) | ≤2.0 | ±0.5 |
| Gain (Zenith) (dBi Typ.) w/ 70mm2 GND Plane | 4.5 | ±0.5 |
| Axial Ratio (dB) w/ 70mm2 GND Plane | 3.0 | ±0.2 |
| Polarization | Right-Handed Circular | - |
| Impedance (Ω) | 50 | - |
| Frequency Temperature Coefficient (ppm/ºC) | 0±10 | - |
- Amplifier Specifications are listed below:
| Item | Specifications |
|---|---|
| Frequency Range | 1575.42 MHz |
| Gain | 27 dB |
| VSWR | ≤ 2.0 V |
| Noise Coefficient | ≤ 2.0 dBm |
| DC Voltage | 3 ~ 5 V |
| DC Current | 5 ± 2 mA |
- Environmental test performance specifications are listed below:
| Item | Normal Temp. | High Temp (1)* | Low Temp (2)* |
|---|---|---|---|
| Amplifier Gain | 27dB ± 2.0 | 27dB ± 2.0 | 27dB ± 2.0 |
| VSWR | ≤ 2.0 | ≤ 2.0 | ≤ 2.0 |
| Noise Coefficient | ≤ 2.0 | ≤ 2.0 | ≤ 2.0 |
1 - High temperature test: soap in temperature (85º C) and humidity (95%) chamber for 24-hour and return to normal temperature (at least for 1-hour) without visual shape change.
2 - Low temperature test: soap in temperature (-40º C) chamber for 24-hour and return to normal temperature (at least for 1-hour) without visual shape change
Electrical Characteristics
The Pilot Gateway operates at 5V/2.5A. It can be powered by micro USB with 5V.
| Parameter | Min. | Typical | Max |
|---|---|---|---|
| Current in CAT M mode | - | 300mA | - |
| Current in GSM mode (peak） | - | - | 3500mA |
| Cellular power | - | 10mA | - |
Environmental Requirements
The table below lists the operation and storage temperature requirements:
| Parameter | Min. | Typical | Max |
|---|---|---|---|
| Operation Temperature Range | -20 ºC | +25 ºC | +65 ºC |
| Extended Temperature Range | -40 ˚C | +85 ˚C | |
| Storage Temperature Range | -40 ˚C | +85 ˚C |
Firmware
Download the latest firmware of RAK7243 and RAK7243C in the table provided below.
| Model | Raspberry Pi Board | Firmware Version | Source |
|---|---|---|---|
| RAK7243 WisGate Developer D3 Gateway | Raspberry Pi 3 / 3B+ | 4.2.6R | Download |
| RAK7243C WisGate Developer D3+ Gateway | Raspberry Pi 3 / 3B+ | 4.2.6R | Download |
Models / Bundles
| Part Number | Package | Description |
|---|---|---|
| RAK7243-1x-142 | With 1x LoRa Antenna, 1x GPS Antenna, 2x LTE Antenna, 1x Power Adapter and 1x SD card | EG95-E version for Cat 4 Cellular, GPS and for EU433 / Cn470 / IN865 / EU868 / US915 / AU915 / AS923 / KR920 regions |
| RAK7243-1x-141 | With 1x LoRa Antenna, 1x GPS Antenna, 2x LTE Antenna, 1x Power Adapter and 1x SD card | ECG95-NA version for Cat 4 Cellular, GPS and for US915 / AU915 / / AS923 / KR920 regions |
| RAK7243-0x-000 | With 1x LoRa Antenna, 1x GPS Antenna, 1x LTE Antenna, 1x Power Adapter and 1x SD card | Without Cellular version for EU433 / CN470 / IN865 / EU868 / US915 / AU915 / AS923 / KR920 regions |
