2A2GJ-HTM7603Heltec Light Hotspot

https://heltec.org Documents Rev 0.1 P 1 / 4 Jun. 2021 Heltec Automation © Limited standard files Heltec Indoor Hotspot HNT Miner & Helium LongFi Support https://heltec.org Documents Rev 0.1 P 2 / 4 Jun. 2022 Heltec Automation © Limited standard files Heltec Light Hotspot User Manual 1. Information Heltec Light Hotspot features and benefits depend on Helium the people's network and its super stable connectivity enables all uses from Helium community have the ultimate experience on mining. The Heltec is an IoT products manufacturer and a passionate supporter of The People's Network officially approved by Helium. With our extensive experience in the field of electronics design as well as the innovative creation, we are bringing a user-friendly Hotspot to The Helium community. 2. Specifications 2.1 Hardware information Resource Description CPU MT7628 MIPS24KEc@580MHz RAM 128MB DDR2 ROM 32MB FLASH Wi-Fi IEEE 802.11 b/g/n 2.4GHz with internal antenna Ethernet 10/100M Ethernet Security ATECC608 LoRa Baseband Chip SX1303 + SX1250, 8 channels LoRa Supported Bands EU868, US915, AU915, AS923 Host Size (mm) 116 * 65 * 30 https://heltec.org Documents Rev 0.1 P 3 / 4 Jun. 2022 Heltec Automation © Limited standard files 2.2 Interface Interface Description Power Source Input x 1 5V DC. RJ45 Socket x 1 Ethernet connection. SMA Socket x 1 LoRa antenna with SMA socket. Button x 1 Single trigger -- Network configuration via Helium APP; Long press -- System power off. Type C Socket x 1 Used to flash firmware during production. RGB LED System status (Power, System, Miner Status, LoRa TX, LoRa Rx) 3. Quick start Step 1 In order to set up the Hotspot, you need to download the phone app and to follow the next steps. Normally, you start with “Add a new Hotspot”. Download the Helium App directly from the App Store or Google Play by scanning the code below: Step 2 Assemble the miner with the provided antenna. https://heltec.org Documents Rev 0.1 P 4 / 4 Jun. 2022 Heltec Automation © Limited standard files Step 3 When you finish setting up the antenna, subsequently, plug in the adaptor to make sure the power is connected with the miner. As you can see here, please choose to use an internet cable (but you can use the WIFI also if you want) and there is also an antenna and the power cable. Once you do this you can see different lights on the device. First it is blue, if it is on, it means the Wi-Fi is connected with the device. Second it is Red, It is called LoRa TX light. The Miner is sending LoRa data when it becomes red color. Third one is LoRa RX signal light. When the miner is receiving data from other hotspot, the light will turn to green. The orange one is the synchronizing status indicator, the process of synchronization is done when you see it’s on. Last one is the system working light, it will be white when the miner is working smoothly. Step 4 Ready to configure with the Helium Appoint takes a few minutes for the miner to set up by following the paring guidance via the App. Step 5 Check through the App to assure the miner is connected, I must say that the app is easy to use, not over complicated, and if you follow the instructions, you will have your Hotspot set up in no time. If so, your journey of mining with Helium is on. FCC Statement 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. -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. To assure continued compliance, any changes or modifications not expressly approved by the party. Responsible for compliance could void the user’s authority to operate this equipment. (Example- use only shielded interface cables when connecting to computer or peripheral devices). This equipment 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 accept any interference received, including interference that may cause undesired operation. FCC Radiation Exposure Statement: The equipment complies with FCC Radiation exposure limits set forth for uncontrolled enviroment. This equipment should be installed and operated with minimum distance 20cm between the radiator and your body. .

FCC ID: 2A2GJ-HTM7603 TB-RF-074-1.0 Appendix III EUT External Photographs Photo 1 Appearance of EUT Photo 2 Appearance of Adapter LoRa Antenna FCC ID: 2A2GJ-HTM7603 TB-RF-074-1.0 Photo 3 Appearance of Adapter Photo 4 Appearance of EUT FCC ID: 2A2GJ-HTM7603 TB-RF-074-1.0 Photo 5 Appearance of EUT Photo 6 Appearance of EUT FCC ID: 2A2GJ-HTM7603 TB-RF-074-1.0 Photo 7 Appearance of EUT Photo 8 Appearance of EUT FCC ID: 2A2GJ-HTM7603 TB-RF-074-1.0 Photo 9 Appearance of EUT Photo 10 Appearance of EUT FCC ID: 2A2GJ-HTM7603 TB-RF-074-1.0 Photo 11 Appearance of EUT Photo 12 Appearance of EUT

FCC ID: 2A2GJ-HTM7603 TB-RF-074-1.0 Appendix IFCC ID Label Size for the label: 30mm X 30mm FCC ID: 2A2GJ-HTM7603 Model: HT-M7603 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. FCC ID: 2A2GJ-HTM7603 TB-RF-074-1.0 Appendix II ID Label Location ID LOCATION

FCC ID: 2A2GJ-HTM7603 TB-RF-074-1.0 Appendix IV EUT Internal Photographs Photo 13 Internal of EUT Photo 14 Appearance of PCB WIFI Antenna2 WIFI Antenna1 FCC ID: 2A2GJ-HTM7603 TB-RF-074-1.0 Photo 15 Appearance of PCB Photo 16 Appearance of PCB FCC ID: 2A2GJ-HTM7603 TB-RF-074-1.0 Photo 17 Appearance of PCB Photo 18 Appearance of PCB FCC ID: 2A2GJ-HTM7603 TB-RF-074-1.0 Photo 19 Appearance of PCB Photo 20 Appearance of PCB FCC ID: 2A2GJ-HTM7603 TB-RF-074-1.0 Photo 21 Appearance of PCB Photo 22 Appearance of PCB FCC ID: 2A2GJ-HTM7603 TB-RF-074-1.0 Photo 23 Appearance of PCB Photo 24 Appearance of PCB FCC ID: 2A2GJ-HTM7603 TB-RF-074-1.0 Photo 25 Appearance of PCB Photo 26 Appearance of PCB

version01 Heltec Automation Technology Co., Ltd Declaration concerning Antenna Specification It is hereby declared that the product Model No.: HT-M7603 FCC ID: 2A2GJ-HTM7603 fulfills the requirement in FCC test relating to the antenna type. The device specified above confirms to the FCC recommendations for Dipole / FPC antenna type(s) described below: Antenna No. Model No. of antenna: Type of antenna: Gain of the antenna (Max.) Frequency range: LoRa / Dipole Antenna DTS: 3.0dBi for 923.3-927.5MHz; DSS: 3.0dBi for 902.3-914.9MHz; 2.4G WIFI / FPC Antenna1 3.0dBi for 2412-2462MHz; 2.4G WIFI / FPC Antenna2 3.0dBi for 2412-2462MHz; The mounting of the antenna is fixed to the radio module and no other antenna should be used. Company name: Heltec Automation Technology Co., Ltd Address: 1st floor, No. 54, 56, 58 zirui North Street, High-tech Zone, Chengdu city, China Place: Aaron Li Date: 2022-6-28 Signature:

Shenzhen Toby Technology Co., Ltd. Report No.: TBR-C-202205-0119-6 Page: 1 of 6 TB-RF-073-3.0 1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China Tel: +86 75526509301 Fax: +86 75526509195 Maximum Permissible Exposure Evaluation FCC ID: 2A2GJ-HTM7603 1. Client Information Applicant : Heltec Automation Technology Co., Ltd Address : 1st floor, No. 54, 56, 58 zirui North Street, High-tech Zone, Chengdu city, China Manufacturer : Heltec Automation Technology Co., Ltd Address : 1st floor, No. 54, 56, 58 zirui North Street, High-tech Zone, Chengdu city, China 2. General Description of EUT EUT Name : Heltec Light Hotspot Models No. : HT-M7603 Model Difference : ---- Product Description : Operation Frequency: DTS: LoRa(500KHz): 923.3MHz-927.5MHz DSS: LoRa(125KHz): 902.3MHz-914.9MHz 802.11b/g/n(HT20): 2412MHz~2462MHz 802.11n(HT40): 2422MHz~2452MHz Power Rating : Adapter(DSS12D-0502000-E) Input: 100-240V~50/60Hz 0.5A Output: 5V2A Software Version : N/A Hardware Version : N/A Connecting I/O Port(S) : Please refer to the User's Manual Remark : the MPE report used the EUT-2(RW-C-202205-0119-4-2#). Report No.: TBR-C-202205-0119-6 Page: 2 of 6 TB-RF-075-1.0 MPE Calculations 1. Antenna Gain: Antenna Brand Model Name Type LoRa Antenna Gain(dBi) Lora N/A N/A Dipole 3.0 Antenna Brand Model Name Type 2.4G WIFI Antenna1 Gain(dBi) 2.4G WIFI N/A N/A FPC 3.0 Antenna Brand Model Name Type 2.4G WIFI Antenna2 Gain(dBi) 2.4G WIFI N/A N/A FPC 3.0 2. EUT Operation Condition: Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. 3. Exposure Evaluation: Equation from page 18 of OET Bulletin 65, Edition 97-01 S=(PG)/4πR 2 Where S: power density P: power input to the antenna G: power gain of the antenna in the direction of interest relative to an isotropic radiator. R: distance to the center of radiation of the antenna 4. Simultaneous transmission MPE Considerations According to KDB447498: All transmitters and antennas in the host must be either evaluated for MPE compliance, by measurement or computational modeling, or qualify for the standalone MPE test exclusion in section 7.1. Simultaneous transmission MPE test exclusion applies when the sum of the MPE ratios for all simultaneous transmitting antennas incorporated in a host device, based on the calculated/estimated, numerically modeled or measured field strengths or power density, is ≤ 1.0. This means that: ∑ of MPE ratios ≤ 1.0 Report No.: TBR-C-202205-0119-6 Page: 3 of 6 TB-RF-075-1.0 5. Standalone MPE Evaluation: LoRa FHSS Channel Conducted Power(max) (dBm) Turn-up Power (dB) Max tune up power (dBm) [P] ANT Gain (dBi) [G] Distance (cm) [R] Power Density (mW/ cm 2 ) [S] Limit of Power Density (mW/ cm 2 ) (S) Channel 01 21.25 21±1 22 3.0 20 0.0629 0.6015 Channel 32 21.72 21±1 22 3.0 20 0.0629 0.6015 Channel 64 21.12 21±1 22 3.0 20 0.0629 0.6015 LoRa DTS Channel Conducted Power(max) (dBm) Turn-up Power (dB) Max tune up power (dBm) [P] ANT Gain (dBi) [G] Distance (cm) [R] Power Density (mW/ cm 2 ) [S] Limit of Power Density (mW/ cm 2 ) (S) Channel 01 27.20 27±1 28 3.0 20 0.250 0.615 Channel 05 27.18 27±1 28 3.0 20 0.250 0.615 Channel 08 27.09 27±1 28 3.0 20 0.250 0.615 Report No.: TBR-C-202205-0119-6 Page: 4 of 6 TB-RF-075-1.0 2.4G WiFi MPE Result Antenna 1 Mode N TX Freq. (MHz) Conducted Power(max) (dBm) Turn-up Power (dB) Max tune up power (dBm) [P] ANT Gain (dBi) [G] Distance (cm) [R] Power Density (mW/ cm 2 ) [S] 802.11b 1 2412 14.88 14±1 15 3.0 20 0.0125 2437 15.84 15±1 16 3.0 20 0.0158 2462 15.69 15±1 16 3.0 20 0.0158 802.11g 1 2412 13.73 13±1 14 3.0 20 0.0099 2437 13.98 13±1 14 3.0 20 0.0099 2462 14.07 14±1 15 3.0 20 0.0125 802.11n20 1 2412 13.36 13±1 14 3.0 20 0.0099 2437 13.59 13±1 14 3.0 20 0.0099 2462 13.77 13±1 14 3.0 20 0.0099 802.11n40 1 2422 12.52 12±1 13 3.0 20 0.0079 1 2437 14.71 14±1 15 3.0 20 0.0125 1 2452 13.21 13±1 14 3.0 20 0.0099 Note: N TX = Number of Transmit Antennas RF Output power specifies that Maximum Conducted Peak Output Power. Report No.: TBR-C-202205-0119-6 Page: 5 of 6 TB-RF-075-1.0 2.4G WiFi MPE Result Antenna 2 Mode N TX Freq. (MHz) Conducted Power(max) (dBm) Turn-up Power (dB) Max tune up power (dBm) [P] ANT Gain (dBi) [G] Distance (cm) [R] Power Density (mW/ cm 2 ) [S] 802.11b 1 2412 16.33 16±1 17 3.0 20 0.0198 2437 16.38 16±1 17 3.0 20 0.0198 2462 16.25 16±1 17 3.0 20 0.0198 802.11g 1 2412 15.28 15±1 16 3.0 20 0.0158 2437 15.37 15±1 16 3.0 20 0.0158 2462 15.09 15±1 16 3.0 20 0.0158 802.11n20 1 2412 15.47 15±1 16 3.0 20 0.0158 2437 15.26 15±1 16 3.0 20 0.0158 2462 14.98 14±1 15 3.0 20 0.0125 802.11n40 1 2422 14.57 14±1 15 3.0 20 0.0125 1 2437 16.07 16±1 17 3.0 20 0.0198 1 2452 14.94 15±1 16 3.0 20 0.0158 Note: N TX = Number of Transmit Antennas RF Output power specifies that Maximum Conducted Peak Output Power. Remark: 1. Output power including turn-up tolerance; 2. Output power was adjust to duty cycle at 100% if measured duty cycle less than 98%; 3. MPE evaluate distance is 20cm from user manual provide by manufacturer. 4. Only the worst power was evaluated for each wireless function 6. Conclusion: As specified in Table 1B of 47 CFR 1.1310- Limits for Maximum Permissible Exposure (MPE), Limits for General Population/ Uncontrolled Exposure Frequency Range (MHz) Power density (mW/ cm 2 ) 300-1,500 F/1500 1,500-100,000 1.0 Report No.: TBR-C-202205-0119-6 Page: 6 of 6 TB-RF-075-1.0 7. Summary simultaneous transmission information The sample supports three antennas for LoRa and WLAN. The LoRa and WLAN can transmit simultaneous. The WLAN with two different antenna. According to KDB447498 for Transmitters used in mobile exposure conditions for simultaneous transmission operations; ∑ of MPE ratios ≤ 1.0 8. Summary simultaneous transmission results LoRa + 2.4G Wifi Maximum Simultaneous transmission MPE Ratios is 0.4065+0.0158+0.0198=0.4421≤1.0. 9. Conclusion: The measurement results comply with the FCC Limit per …

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Shenzhen Toby Technology Co., Ltd. Report No.: TBR-C-202205-0119-42 Page: 1 of 63 TB-RF-074-1.0 1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China Tel: +86 75526509301 Fax: +86 75526509195 Radio Test Report FCC ID: 2A2GJ-HTM7603 Report No. : TBR-C-202205-0119-42 Applicant : Heltec Automation Technology Co., Ltd Equipment Under Test (EUT) EUT Name : Heltec Light Hotspot Model No. : HT-M7603 Series Model No. : ---- Brand Name : Heltec Sample ID : RW-C-202205-0119-4-1#&RW-C-202205-0119-4-2# Receipt Date : 2022-06-07 Test Date : 2022-06-07 to 2022-06-20 Issue Date : 2022-06-28 Standards : FCC Part 15 Subpart C 15.247 Test Method : ANSI C63.10: 2013 KDB 558074 D01 15.247 Meas Guidance v05r02 Conclusions : PASS In the configuration tested, the EUT complied with the standards specified above. Witness Engineer : Wade. Lv Engineer Supervisor : Ivan Su Engineer Manager : Ray Lai This report details the results of the testing carried out on one sample. The results contained in this test report do not relate to other samples of the same product. The manufacturer should ensure that all products in series production are in conformity with the product sample detailed in the report. Report No.: TBR-C-202205-0119-42 Page: 2 of 63 TB-RF-074-1.0 Contents CONTENTS ............................................................................................................................................. 2 1. GENERAL INFORMATION ABOUT EUT.............................................................................. 6 1.1 Client Information ................................................................................................................. 6 1.2 General Description of EUT (Equipment Under Test) ................................................... 6 1.3 Block Diagram Showing the Configuration of System Tested ...................................... 8 1.4 Description of Support Units .............................................................................................. 8 1.5 Description of Test Mode .................................................................................................... 9 1.6 Description of Test Software Setting .............................................................................. 10 1.7 Measurement Uncertainty ................................................................................................ 10 1.8 Test Facility ......................................................................................................................... 11 2. TEST SUMMARY ..................................................................................................................... 12 3. TEST SOFTWARE ................................................................................................................... 12 4. TEST EQUIPMENT .................................................................................................................. 13 5. CONDUCTED EMISSION ....................................................................................................... 14 5.1 Test Standard and Limit .................................................................................................... 14 5.2 Test Setup ........................................................................................................................... 14 5.3 Test Procedure ................................................................................................................... 14 5.4 Deviation From Test Standard ......................................................................................... 15 5.5 EUT Operating Mode ........................................................................................................ 15 5.6 Test Data ............................................................................................................................. 15 6. RADIATED AND CONDUCTED UNWANTED EMISSIONS ............................................ 16 6.1 Test Standard and Limit .................................................................................................... 16 6.2 Test Setup ........................................................................................................................... 17 6.3 Test Procedure ................................................................................................................... 18 6.4 Deviation From Test Standard ......................................................................................... 19 6.5 EUT Operating Mode ........................................................................................................ 19 6.6 Test Data ............................................................................................................................. 19 7. EMISSIONS IN NONRESTRICTED FREQUENCY BANDS ............................................ 20 7.1 Test Standard and Limit .................................................................................................... 20 7.2 Test Setup ........................................................................................................................... 20 7.3 Test Procedure ................................................................................................................... 20 7.4 Deviation From Test Standard ......................................................................................... 21 7.5 EUT Operating Mode ........................................................................................................ 21 7.6 Test Data ............................................................................................................................. 21 8. 99% OCCUPIED AND 20DB BANDWIDTH ........................................................................ 22 8.1 Test Standard and Limit .................................................................................................... 22 8.2 Test Se…

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FCC ID: 2A2GJ-HTM7603 TB-RF-074-1.0 Appendix V EUT Test Photographs 15C Test Setup Photo of Setup for Radiated Emission (Above 1 GHz) Photo of Setup for Radiated Emission (Above 1 GHz) FCC ID: 2A2GJ-HTM7603 TB-RF-074-1.0 Photo of Setup for Radiated Emission (Below 1 GHz) Photo of Setup for Conducted Emission -----END OF REPORT-----