RAKwireless WisDevice RAK7243 User manual

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User Manual for
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Version V1.1 | January 2019
Pilot Gateway Pro RAK7243
WisDevice Series

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Table of Contents
1Overview..................................................................................................................................................... 4
1.1 Introduction......................................................................................................................................... 4
1.2 Main Features.................................................................................................................................... 5
2Pilot Gateway Pro RAK7243.................................................................................................................. 6
2.1 Overview............................................................................................................................................. 6
2.2 Interfaces............................................................................................................................................ 6
2.3 System Structure............................................................................................................................... 7
2.4 LoRa Operating Frequencies...........................................................................................................7
2.5 Hardware Structure
............................................................................................................................ 7
2.5.1 LoRa Concentrator RAK2245 Pi HAT................................................................................8
2.6 Power Requirements.........................................................................................................................8
2.7 Environmental Requirements.......................................................................................................... 8
2.8 LoRa RF Characteristics.................................................................................................................. 9
2.8.1 Transmitter RF Characteristics........................................................................................... 9
2.8.2 Receiver RF Characteristics..............................................................................................10
3Antenna.....................................................................................................................................................11
3.1 LoRa Antenna.................................................................................................................................. 11
3.1.1 Overview...............................................................................................................................11
3.1.2 Antenna Dimension.............................................................................................................11
3.1.3 Antenna Parameter.............................................................................................................11
3.2 GPS Antenna................................................................................................................................... 12
3.2.1 Overview...............................................................................................................................12
3.2.2 GPS Antenna Dimensions................................................................................................. 12
3.2.3 GPS Environmental Requirements.................................................................................. 12
3.2.4 GPS Antenna Parameter................................................................................................... 13
4Flash the Gateway Image.....................................................................................................................13
5Warning.....................................................................................................................................................14
6Contact Information...............................................................................................................................15
7Revision History..................................................................................................................................... 16
8Document Summary..............................................................................................................................16

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List of Tables
Table 1 | LoRa Operating Frequencies..................................................................................................... 7
Table 2 | Power Requirements................................................................................................................... 8
Table 3 | Environment Requirements........................................................................................................ 8
Table 4 | RF Output Power Level...............................................................................................................9
Table 5 | TX RF Characteristics............................................................................................................... 10
Table 6 | RX RF Characteristics...............................................................................................................10
Table 7 | LoRa Antenna Parameter.........................................................................................................11
Table 8 | GPS Environmental Requirements......................................................................................... 12
Table 9 | GPS Antenna Parameter..........................................................................................................13
List of Figures
Figure 1 | Pilot Gateway Pro Overview..................................................................................................... 5
Figure 2 | Outer Dimensions....................................................................................................................... 6
Figure 3 | Interfaces..................................................................................................................................... 6
Figure 4 | Pilot Gateway Pro System Structure....................................................................................... 7
Figure 5 | LoRa Hardware Structure..........................................................................................................8
Figure 6 | LoRa Antenna Overview......................................................................................................... 11
Figure 7 | LoRa Antenna Dimension....................................................................................................... 11
Figure 8 | GPS Antenna............................................................................................................................ 12
Figure 9 | GPS Antenna Dimensions...................................................................................................... 12

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1Overview
1.1 Introduction
The RAK7243 Pilot Gateway Pro 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 it’s housing is built with an
aluminum casing. Raspberry Pi 3B+ can support many functions, for marketing
purpose, this module only support/enable USB port and Ethernet port in US, the other
functions( 2.4G WiFi,5G WiFi, Bluetooth, HDMI port, Audio port) have been forbidden
by the manufacturer’s software.
For the build-in RAK2245 Pi HAT, it uses the SX1301 chip from Semtech which built-in
LoRa 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 available in multiple variants so it can be used for internartinal
standard bands. This unique capability allows to implement innovative network
architectures advantageous over other short range systems. 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 for the
evaluation. It includes a ready to use LoRaWan 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 LoRaWan system. 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.

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Figure 1 | Pilot Gateway Pro Overview
1.2 Main Features
Computing with Raspberry Pi 3B+(Linux).
SX1301 base band processor, emulates 49 x LoRa demodulators 10
programmable parallel demodulation paths, support 8 uplinks channel, 1 downlink
channel.
Built-in the Ublox MAX-7Q GPS Module.
Built-in Heat Sink for thermal heat dissipation management.
TX power up to 11.73dBm, RX sensitivity down to -139dBm@SF12, BW 125KHz.
LoRa frequency supports global license-free frequency band (EU433, CN470,
EU868, US915, AS923, AU915, KR920, IN865 and AS920).
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.

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2Pilot Gateway Pro RAK7243
2.1 Overview
The outer dimension of Pilot Gateway Pro is 92 x 68.3 x 53.5 mm as shown below.
Figure 2 | Outer Dimensions
2.2 Interfaces
Figure 3 | Interfaces

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2.3 System Structure
The following figure shows the basic concept for LoRaWAN system. RAK7243 Pilot
Gateway Pro 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 is done by 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 4 | Pilot Gateway Pro System Structure
2.4 LoRa Operating Frequencies
The Pilot Gateway Pro supports all LoRaWAN frequency channels as below. Which is
easy to configure while building the firmware from the source code.
Region
Frequency ( MHz )
North America
903-927.5Mhz
Table 1 | LoRa Operating Frequencies
2.5
Hardware Structure

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2.5.1 LoRa Concentrator RAK2245 Pi HAT
RAK2245 Pi HAT is a LoRa Concentrator board which follows the Pi HAT
standard, and can be mounted to Pi board with 40-pin connector.
Figure 5 | LoRa Hardware Structure
2.6 Power Requirements
The Pilot Gateway Pro can be powered by micro USB with 5V.
Table 2 | Power Requirements
2.7 Environmental Requirements
The table below lists the operation and storage temperature requirements:
Table 3 | Environment Requirements
Parameter
Min.
Typical
Max.
Active Mode(TX)
1500mA
Active Mode(RX)
1560mA
Parameter
Min.
Typical
Max.
Operation Temperature Range
-35 ºC
+25 ºC
+55 ºC
Storage Temperature Range
-40 ˚C
+25 ºC
+55 ˚C
RAK2245 Pi HAT

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2.8 LoRa RF Characteristics
2.8.1 Transmitter RF Characteristics
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.
Note：The maximum output power setting should not exceed 11.73dBm.
Table 4 | RF Output Power Level
T=25℃, VDD=5V(Typ.) if nothing else stated.
PA Control
DAC Control
MIX Control
DIG Gain
Nominal RF Power
Level
0
3
8
0
-6 dBm
0
3
10
0
-3 dBm
0
3
14
0
0
1
3
9
3
4 dBm
1
3
8
0
8 dBm
1
3
9
0
10 dBm
1
3
11
0
12 dBm
1
3
12
0
14 dBm
1
3
13
0
16 dBm
2
3
12
0
17 dBm
2
3
13
0
19 dBm
2
3
14
0
20 dBm
3
3
10
0
0
3
3
11
0
0
3
3
12
0
25 dBm
3
3
13
0
26 dBm
3
3
14
0
27 dBm
Parameter
Condition
Min
Typ.
Max
Frequency Range
903 MHz
927.5 MHz
Modulation Techniques
FSK/LoRaTM
TX Frequency Variation vs.
Temperature
Power Level
Setting : 20
-3 KHz
+3 KHz
TX Power Variation vs.
Temperature
-5 dBm
+5 dBm
TX Power Variation
-1.5 dBm
+1.5 dBm

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Table 5 | TX RF Characteristics
2.8.2 Receiver RF Characteristics
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 typically sensitivity level of the RAK2245.
Table 6 | RX RF Characteristics
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

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3Antenna
3.1 LoRa Antenna
3.1.1 Overview
The LoRa Antenna with RP-SMA female connector shown as follow figures.
Figure 6 | LoRa Antenna Overview
3.1.2 Antenna Dimension
The antenna's mechanical dimension is shown below:
Figure 7 | LoRa Antenna Dimension
3.1.3 Antenna Parameter
Items
Specifications
Voltage Standard Wave Radio (VSWR)
1:1.5
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%
Table 7 | LoRa Antenna Parameter

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3.2 GPS Antenna
3.2.1 Overview
The GPS antenna for Pilot Gateway Pro is shown below.
Figure 8 | GPS Antenna
3.2.2 GPS Antenna Dimensions
Figure 9 | GPS Antenna Dimensions
3.2.3 GPS 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%
Table 8 | GPS Environmental Requirements

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3.2.4 GPS Antenna Parameter
Antenna specifications are listed in the table below:
Table 9 | GPS Antenna Parameter
4Flash the Gateway Image
When you received your gateway, firstly you need flash the gateway image by yourself.
Please refer to the Image Start Quide for RAK7243, here is the link:
https://www.rakwireless.com/en/download/LoRa/Pilot-Gateway-Pro-RAK7243#Application-
Notes
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
-

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5Warning
FCC Warning：This device complies with part 15 of the FCC Rules. Operation is
subject to the following two conditions.
(1) This device may not cause harmful interference;
(2) This device must accept any interference received, including interference that may
cause undesired operation.
Any Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
Note: This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions,may cause harmful interference to radio
communications. However there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
-Reorient or relocate the receiving antenna.
-Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
-Consult the dealer or an experienced radio/TV technician for help.
This module complies with FCC radiation exposure limits set forth for an uncontrolled
environment .This equipment should be installed and operated with minimum distance
20 cm between the radiator& your body.
Manufacture name and address：
Shenzhen Rakwireless Technology Co., Ltd.
Room 506, Bldg B, New Compark, Pingshan First Road, Taoyuan Street, Nanshan District,
Shenzhen

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6Contact Information
Shenzhen Business
[e-mail]
Room 506, Bldg B, New Compark, Pingshan First Road, Taoyuan Street, Nan
shan District, Shenzhen
Shenzhen Technical
[e-mail]
0755-86108311
Room 506, Bldg B, New Compark, Pingshan First Road, Taoyuan Street, Nan
Shan District, Shenzhen

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7Revision History
Revision
Description
Date
1.0
Initial version
2018-12-21
1.1
Update the description, some pictures
2019-01-15
8Document Summary
Document Name: RAK7243 Pilot Gateway Pro User Manual
Revision Number: V1.0
Prepared by
Checked by:
Approved by:
Terry & Penn
Terry
About RAKwireless:
RAKwireless is the pioneer in providing innovative and diverse cellular and LoRa
connectivity solutions for IoT edge devices. It's easy and modular design can be used in
different IoT applications and accelerate time-to-market.
For more information, please visit RAKwireless website at www.rakwireless.com.