5G Helium Hotspot Overview


Product Overview

The Nebra 5G gateway is a multi-protocol miner for the Helium network. Primarily it will mine HNT for providing proof of coverage using the LoRaWAN® protocol, but will also have the ability to add a 5G small cell antenna, CBRS certified. The 5G miner will have the functionality to mine mobile cellular traffic on the Helium network.

In the future, this 5G Nebra miner will also be able to expand to other wireless technologies such as providing Wi-Fi coverage.

The Firmware comes pre-loaded on the gateway and combines the Helium LoRaWAN® miner with the mobile cellular network, based on the open-source project Magma.


Open 5G Revolution - Expand your Nebra 5G gateway over time as the blockchain evolves to support 5G and Wi-Fi by connecting cellular antennas and Wi-Fi access points.

OTA Updates - The Nebra 5G miner will feature automatic over-the-air (OTA) updates ensuring that the software on your gateway is always up-to-date with no manual intervention required, giving you peace of mind.

Deploy - Indoor or outdoor, the all-aluminium chassis has a rugged design to be deployed in a number of varying scenarios, including outdoor using a compatible IP-rated enclosure.

Troubleshooting - All our hotspots feature the Nebra local diagnostic dashboard which makes it easy to troubleshoot and report issues with ease.

Instant sync - With the Quad-Core Intel CPIU and 8GB of RAM, the Nebra gateway is the most powerful on the market, which features the fastest blockchain sync times.


Specification5G Miner
Dimension126x134x45.3mm (LxWxH)
MaterialHigh quality aluminium alloy
ProcessorOn-board Intel ATOM Bay-trail J1900 Quad-Core Processor 2.4GHz
GraphicsOn-board Intel HD graphics
Memory8GB Single channel DDR3L 1333MHz
Concentrator Module for LoRa®Nebra SX1303 concentrator module (USB)
Storage64GB mSATA SSD
LED Indicator1x Power indicator (red), 1x SSD activity (green)
Network4x Intel I225 Gigabit Ethernet
Power InterfaceDC power supply
Button1x Power switch (with LED), 1x Reset button
USB1x USB 2.0, 1x USB 3.0
Console1x RJ45 RS232/RS485
WirelessWi-Fi 4, Bluetooth 4.0 Built-in
Power SupplyDC 12V 5A (60W Max)
Operating Temperature-20C ~ +60C
Storage Temperature-40C ~ +85C
Relative Humidity5%-95%, no condensing
Vibration0.5g rms/5-500Hz/random/operating


The 5G miner comes with a number of interfaces for its operations and current status indicators. It is designed to be fully automated with very little physical interaction required.

  1. Gigabit Ethernet WAN port for network connectivity
  2. Gigabit Ethernet port for LTE/5G Small Cell or Wi-Fi access point connectors
  3. Power LED (red)
  4. SSD activity LED (green)
  5. DC 12V power input 2.1mm

  1. Power button (with LED)
  2. USB 3.0 % USB 2.0 ports for external accessories
  3. RS232 (RJ45) console port
  4. Reset button
  5. SMA antenna connector for LoRa®
  6. GPS antenna connector SMA


RF Characteristics

Operating Frequencies

FrequencyNebra SKUBarcode
433MHZ (EU433)N/A
470MHz (CN470)N/A
868MHz (EU868, IN868, RU864)N/A
915MHz (US915, AU915, KR920, AS923-1/2/3)TBCTBC

RF Features

  • Mini PCIe form factor with mounted heatsink
  • SX1303 base band processor emulates 49 x demodulators, 10 parallel demodulation paths. Supports 8 uplink channels and 1 downlink channel
  • Built-in USB interface
  • 2x SX1250 Tx/Rx front-ends high/low frequency
  • Tx power up to 27 dBm, Rx sensitivity down to -141 dBm @ SF12, BW 125KHz
  • Supports global license-free frequency band (EU433, CN470, IN865, EU868, US915, AU915, KR920, and AS923)

3GPP Feature Specifications

  • 3GPP Release: 15 for LTE, 15 for 5G SA
  • 4G Core: MME, SGW, PGW, HSS-lite
  • 5G Core: AMF, SMF, UPF, UDM-lite
  • Stateless: Stateless MME and S-GW allow for hitless service, updates/restarts
  • User plane T-put: 1Gbps
  • Connected users: >600
  • QoS Control: 3GPP standard QoS Class Identifier (QCI)
  • CUPS Support: native
  • Handover: S1 & X2 handover

Antenna Specification


Antenna Parameters

SpecificationGPS Antenna
Frequency1575.42 MHz
Cable Length3m
Connector TypeSMA Male
Cable TypeRG174
Operating Temperature (C)-40C ~ +85C

Antenna for LoRa®

Antenna Dimension

The antenna mechanical dimensions are shown below:

Antenna Parameters

Specification915MHz Model
VSWR< 1.8
Connector TypeRP SMA Male
Polarisation TypeVertical
Input Impedance50 Ohms

Environmental Requirements

This product should be operated only in a well-ventilated environment to ensure there is enough heat dissipation.

The hotspot should be placed on a flat surface

For ideal hotspot placement please see the documentation here - https://helium.nebra.com/#/handy-guides/hotspot-ideal-location 

Safety Instructions

To avoid malfunction or damage to this product, please observe the following:

Do not expose to water or moisture

Do not expose to any source of extreme heat. The 5G miner is designed for reliable operation and has been tested at normal ambient room temperatures (25C)

Take care when handling to avoid mechanical, shock, vibration or electrical damage to the connectors or components inside

Do NOT open the case unless specifically requested to do so by a member of our support team. If opening the case please observe anti-static procedures

Any modification to the 5G miner will void any warranty

Compliance Information

We are working on getting the Nebra 5G miner certified in multiple regions. Below is a list of approved regions with links to certification for viewing.

CEEuropean Economic Area868MHzN/A
UKCAUnited Kingdom868MHzN/A
FCCUnited States of America915MHzPendingUS 915
RCMAustralia & New Zealand915MHzN/A
AU 915

Certification Codes



All our miners have been tested under the EU RoHS Directive 2011/65/EU and its amendment directive 2015/863/EU

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