FCC ID: 2AF6B-RAK7248 WisGate

RAK Hotspot Miner Datasheet | RAKwireless Documentation Center 31/03/2021, 06:11 Documentation Center RAK Hotspot Miner v2 Datasheet Overview Description Hotspot Details Efficient miner for a new cryptocurrency, Helium (HNT) Complete set-up in minutes using a smartphone LongFi technology maximizes range and battery life without Wi-Fi, cellular or Bluetooth Low Power only uses about the same amount as an LED light bulb (5W) Easily manage Hotspots and tokens from the mobile app LongFi Technology Helium LongFi is a technology architecture that combines a leading wireless technology, LoRaWAN, and the Helium Blockchain. LongFi is optimized for miles of range, and long battery life for IoT devices. RAK Hotspot Miners earn Helium when devices connect, and for validating wireless coverage delivered by peers. Using a system called Proof-of-Coverage, RAK Hotspot Miners earn more Helium when they're in range of other RAK Hotspot Miners, but need to be at least 300 meters apart. Range depends on the environment, for rural areas up to 10 miles or more, but for more dense areas up to a mile. Single RAK Hotspot Miners earn less as they can only issue Challenges over the internet, and cant participate in Proof-of-Coverage. http://localhost:8080/Product-Categories/WisGate/RAK-Hotspot-Miner-v2/Datasheet/#overview Page 1 of 12 RAK Hotspot Miner Datasheet | RAKwireless Documentation Center 31/03/2021, 06:11 Deliver may square miles of coverage from a single RAK Hotspot Miner Based on initial testing, only about 50 to 100 RAK Hotspot Miners are needed to provide complete coverage for an entire city Create a new global network for billions of devices Any IoT device can become Helium-enabled using readily available off-the-shelf hardware components, software, and a reference design that is open source for anyone to improve upon Features Computing with Raspberry Pi4 (Linux) 2GB on-board RAM 32GB SD card Based on the LoRa Concentrator Engine: Semtech SX1302 Built-in Heat Sink for thermal heat dissipation management Supports 5V/ 3A power supply IP30 housing TX power up to 27dBm, RX sensitivity down to -139 dBm @SF12, BW 125 KHz LoRa Frequency band support: RU864, IN865, EU868, US915, AU915, KR920, AS923. Includes Pi ready 'ID EE PROM', GPIO setup, and device tree can be automatically configured from vendor information Supports a fully open source LoRaWAN server Specifications Overview The overview covers the RAK Hotspot Miner hotspot details and block diagram. Board Overview The outer dimension of RAK Hotspot Miner is 92 x 68.3 x 57.2 mm. http://localhost:8080/Product-Categories/WisGate/RAK-Hotspot-Miner-v2/Datasheet/#overview Page 2 of 12 RAK Hotspot Miner Datasheet | RAKwireless Documentation Center 31/03/2021, 06:11 Figure 1: Device Dimensions Hotspot Details The figure below summarizes the basic building blocks of the RAK Hotspot Miner. The RAK2287 is an essential part of it as it provides all LoRaWAN connectivity. It receives and transmits LoRa Frames and takes care of modulating/demodulating the signals among others. The processing of the LoRa Frames as well as higher-level protocol related tasks are done by the embedded host system (Raspberry Pi). Received and processed LoRa Frames are being sent to a LoRaWAN Server. The segmentation of protocol related tasks is outside the scope of this document. Figure 2: RAK Hotspot Miner System Structure Block Diagram The RAK Hotspot Miner 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 the embedded host system

(Raspberry Pi 4). Received and processed radio messages are being sent to a LoRaWAN http://localhost:8080/Product-Categories/WisGate/RAK-Hotspot-Miner-v2/Datasheet/#overview Page 3 of 12 RAK Hotspot Miner Datasheet | RAKwireless Documentation Center 31/03/2021, 06:11 server. The following fgure shows the block diagram of the RAK Hotspot Miner. Figure 3: RAK Hotspot Miner Block Diagram NOTE

The concrete segmentation of the protocol related tasks is outside the scope of this document. Hardware Interfaces The interface of RAK Hotspot Miner is shown in the figure below. Figure 4: RAK Hotspot Miner Interfaces RF Characteristics Operating Frequencies http://localhost:8080/Product-Categories/WisGate/RAK-Hotspot-Miner-v2/Datasheet/#overview Page 4 of 12 RAK Hotspot Miner Datasheet | RAKwireless Documentation Center 31/03/2021, 06:11 The RAK Hotspot Miner supports all LoRaWAN frequency channels as below. It is easy to configure while building the firmware from the source code. Region Europe North America Asia Australia Korea India Russia Frequency (MHz) EU868 US915 AS923 AU915 KR920 IN865 RU864 LoRa RF Characteristics Transmitter RF Characteristics The RAK Hotspot Miner 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. http://localhost:8080/Product-Categories/WisGate/RAK-Hotspot-Miner-v2/Datasheet/#overview Page 5 of 12 RAK Hotspot Miner Datasheet | RAKwireless Documentation Center 31/03/2021, 06:11 PA Control PWID Control 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 10 13 17 20 0 2 4 7 9 10 12 13 16 18 20 22 Power

-6 dBm

-3 dBm 0 dBm 4 dBm 8 dBm 10 dBm 12 dBm 14 dBm 16 dBm 17 dBm 19 dBm 20 dBm 23 dBm 25 dBm 26 dBm 27 dBm http://localhost:8080/Product-Categories/WisGate/RAK-Hotspot-Miner-v2/Datasheet/#overview Page 6 of 12 RAK Hotspot Miner Datasheet | RAKwireless Documentation Center 31/03/2021, 06:11 NOTE

Normally, there is a 1.5dB difference between the actual test value and the table data. NOTE

T=25, VDD=5V (Typ.) if nothing else is stated. Parameter Condition Min Typ. Max Frequency Range Modulation Techniques FSK/LoRa TX Frequency Variation vs. Temperature TX Power Variation vs. Temperature Power Level Setting : 20 Power Level Setting : 20 TX Power Variation 863 MHz

-3 KHz

-5 dBm

-1.5 dBm 870 MHz

+3 KHz

+5 dBm

+1.5 dBm Parameter Condition Min Typ. Max Frequency Range 902 MHz 928 MHz Modulation Techniques FSK/LoRa Receiver RF Characteristics It is highly recommended, to use optimized RSSI calibration values, which is part of the HAL v3.l. For both, Radio 1 and 2, the RSSI-Offset should be set -169.0. The following table gives the typical sensitivity level of the RAK Hotspot Miner. http://localhost:8080/Product-Categories/WisGate/RAK-Hotspot-Miner-v2/Datasheet/#overview Page 7 of 12 RAK Hotspot Miner Datasheet | RAKwireless Documentation Center 31/03/2021, 06:11 Signal Bandwidtth (Khz) Spreading Factor Sensitivity (dBm) 125 125 250 250 500 500 12 7 12 7 12 7

-139

-125

-136

-123

-134

-120 Antenna Specifications LoRa Antenna Overview The LoRa Antenna with RP-SMA female connector shown in the figure below:

Figure 5: LoRa Antenna Antenna Dimension The antenna's mechanical dimension is shown below:

Figure 6: LoRa Antenna Dimension (mm) Antenna Parameters http://localhost:8080/Product-Categories/WisGate/RAK-Hotspot-Miner-v2/Datasheet/#overview Page 8 of 12 RAK Hotspot Miner Datasheet | RAKwireless Documentation Center 31/03/2021, 06:11 Items Specifications Specifications Frequency Range 863~870 MHz 902~928 MHz Peak Gain 2.8 dBi 2.3 dBi Voltage Standard Wave Ratio

(VSWR) Efficiency 1.5

>80%

1.5

>80%

Feed Impedance 50 Ohms 50 Ohms Working Temperature &

T: -35~+75 C, H:

T: -35~+75 C, H:

Humidity 5~95%

5~95%

Electrical Requirements The RAK Hotspot Miner operates at 5V/ 3A Parameter Min. Typical Max LoRa Tx mode Standby power Burn test mode NOTE

950 mA 550 mA

940 mA LoRa Tx mode: The LoRa module works at the maximum transmit power state. Burn test mode: Raspberry Pi CPU and memory are running at full capacity. Environmental Requirements The table below lists the operation and storage temperature requirements:

http://localhost:8080/Product-Categories/WisGate/RAK-Hotspot-Miner-v2/Datasheet/#overview Page 9 of 12 RAK Hotspot Miner Datasheet | RAKwireless Documentation Center 31/03/2021, 06:11 Parameter Min. Typical Max Operation Temperature Range

-10 C

+25 C

+55 C Storage Temperature Range

-40 C

+85 C Software Firmware Model Raspberry Pi Board Firmware Version Source RAK Hotspot Miner Raspberry Pi 4 LoRaWAN Supports class A, C Supports connect to TTN server Supports LoRa package forward Supports build-in ChirpStack LoRaWAN Server Network Protocol Stack Supports 802.11ac Supports Wi-Fi AP mode and Client mode Supports DHCP Certification FCC Caution Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 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, and (2) this device must http://localhost:8080/Product-Categories/WisGate/RAK-Hotspot-Miner-v2/Datasheet/#overview Page 10 of 12 RAK Hotspot Miner Datasheet | RAKwireless Documentation Center 31/03/2021, 06:11 accept any interference received, including interference that may cause undesired operation. IMPORTANT NOTE

This equipment has been tested and found to comply with the limits for a Class B digital device, according 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 following 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. Increase the separation between the equipment and receiver. 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. FCC Radiation Exposure Statement This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20 cm between the radiator & your body. http://localhost:8080/Product-Categories/WisGate/RAK-Hotspot-Miner-v2/Datasheet/#overview Page 11 of 12 RAK Hotspot Miner Datasheet | RAKwireless Documentation Center 31/03/2021, 06:11 ISEDC Warning

This device complies with Innovation, Science, and Economic Development Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions:

1. this device may not cause interference, and 2. this device must accept any interference, including interference that may cause undesired operation of the device. The device complies with RF exposure guidelines, users can obtain Canadian information on RF exposure and compliance. The minimum distance from the body to use the device is 20 cm. http://localhost:8080/Product-Categories/WisGate/RAK-Hotspot-Miner-v2/Datasheet/#overview Page 12 of 12

FCC ID Label Product:WisGate Oo} L: ol Model:RAK7248 =

Input:DC 5V === 3A FCC ID:2AF6B-RAK7248 . 23 1C:25908-RAK7248 Oo} mm Contains FCC ID:2AF6B-RAK2287,2ABCB-RPI4B Contains IC:20953-RPI4B SIN:XXXXXXXXXXXXXXXXXX 58mm

Bay Area Compliance Laboratories Corp. (Shenzhen) Project No.: RSZ200814003-RF EXHIBIT A - FCC ID LABEL AND LOCATION FCC ID Label FCC ID Label Location Information The label shown shall be permanently affixed at a conspicuous location on the device and be readily visible to the user at the time purchase (Labeling requirements per 2.925)

Authority to Act as Agent Date: 2021.04.01 TUV Rheinland Group 762 Park Avenue Youngsville, NC 27596 To Whom It May Concern:

I appoint TUV Rheinland (Shenzhen) Co., Ltd. to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the FCC or Industry Canadas regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for Certification, as specified by TUV Rheinland Group, still resides with Shenzhen Rakwireless Technology Co., Ltd. /

Room 506, Tsinghua Harbor, Science and Technology Park North Buildings, Nanshan District, Shenzhen, China For TCB applications, We certify that we are not subject to denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Further, no party, as defined in 47 CFR 1.2002 (b), to the application is subject to denial of federal benefits, that includes FCC benefits. Thank you, Agency Agreement Expiration Date:

12 months Title Engineer Telephone

19926584202 By

(Signature) On behalf of

QF094234 Shenzhen Rakwireless Technology Co., Ltd.

(Company Name) Vivian Xu

(Print Name) Page 1 of 1 Revision 0

Confidentiality Letter Date: 2021-04-14 Subject: Confidentiality Request for FCC ID: 2AF6B-RAK7248 Pursuant to FCC 47 CRF 0.457(d) and 0.459 and IC RSP-100, Section 10, the applicant requests that a part of the subject FCC/IC application be held confidential. Type of Confidentiality Requested Short Term Short Term Short Term Short Term Short Term Short Term Short Term Short Term Permanent Permanent Permanent Permanent Permanent Permanent Exhibit Block Diagrams External Photos Internal Photos Operation Description/Theory of Operation Part List/Tune-Up Procedure Schematics Test Setup Photos Users Manual Shenzhen Rakwireless Technology Co., Ltd. has spent substantial effort in developing this product and it is one of the first of its kind in industry. Having the subject information easily available to "competition"

would negate the advantage they have achieved by developing this product. Not protecting the details of the design will result in financial hardship. Permanent Confidentiality:

The applicant requests the exhibits listed above as permanently confidential be permanently withheld from public review due to materials that contain trade secrets and proprietary information not customarily released to the public. Short-Term Confidentiality:

The applicant requests the exhibits selected above as short term confidential be withheld from public view for a period of 180 days from the date of the Grant of Equipment Authorization and prior to marketing. This is to avoid premature release of sensitive information prior to marketing or release of the product to the public. Applicant is also aware that they are responsible to notify TUV Rheinland in the event information regarding the product or the product is made available to the public. TUV Rheinland will then release the documents listed above for public disclosure pursuant to FCC Public Notice DA 04-

1705. Sincerely,

(Signature/Title) Vivian Xu

(Print name) By:

Shenzhen RAKwireless Technology Co.,Ltd. Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 2021-04-14 To whom it may concern:

FCC ID: 2AF6B-RAK7248 Pursuant to CFR 2.1043, Shenzhen RAKwireless Technology Co.,Ltd. hereby request a Permissive Change Class II for its application with FCC ID: 2AF6B-RAK7248, model No.: RAK7248, granted on 09/24/2020. Modifications as following:

Modifications #

Remark Remove GPS function Remove the GPS function, modify relative circuit and connector. Remove USB and TF card interface Use plastic seal TF card and USB interface alternative converted board Original model RAK2003 and new model RAK2004 for converted board. alternative enclosure Add one button and shape changes The Radiated Spurious Emissions and Conducted power retested with report 60386707 003. The Radiated Emissions and Conducted Emissions was retested with report CN21M8L6 001. Sincerely, _______________________

(Vivian Xu / safety engineer) Shenzhen RAKwireless Technology Co., Ltd.

Shenzhen RAKwireless Technology Co., Ltd. Address: Room 506, Bldg B, New Compark, Pingshan First Road, Taoyuan Street, XiLi town Nanshan District, Shenzhen, China Email: zhangziwei@rakwireless.com Tel: 17666100770 FCC Authorization 2020-09-02 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern:

We (Shenzhen RAKwireless Technology Co., Ltd.), the undersigned, hereby authorize Bay Area Compliance Laboratories Corporation to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Bay Area Compliance Laboratory Corporation on our behalf shall have the same effect as our own action. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. This authorization is valid until further written notice from the applicant. Sincerely, Signature:

Ziwei Zhang Title: Engineer QA-FR-170-B

Shenzhen RAKwireless Technology Co., Ltd. Address: Room 506, Bldg B, New Compark, Pingshan First Road, Taoyuan Street, XiLi town Nanshan District, Shenzhen, China Email: zhangziwei@rakwireless.com Tel: 17666100770 FCC Confidential Authorization 2020-09-02 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2AF6B-RAK7248 In accordance with Sections 0.457 and 0.459 of the Commissions Rules, (Shenzhen RAKwireless Technology Co., Ltd. ) hereby requests long-term confidential treatment of information accompanying this application as outlined below:

Block Diagram Schematics Operation Description The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely, Signature:

Ziwei Zhang Title: Engineer