Remote Wireless Infrastructure

Helium hotspot and IoT devices


You probably know what HNT and Helium hotspots are and you may be trying to make the best out of your radio-based HNT miner.


But just in case you are not familiar, HNT is a new form of cryptocurrency for Helium blockchain (A distributed network of Hotspots that creates public long-range wireless coverage for LoRaWAN enabled IoT devices - private CBRS networks also in the works).


The Helium Hotspot creates a Long-Fi radio signal and routes packets from low-power devices in your area that use LoRaWAN and have been deployed to the Helium Network.


You can learn more about Helium hotspots and HNT mining here.

The diagram below shows the general flow of data through a Lora gateway:

LoraWAN Devices  Network Topology

Network Topology For IoT Devices and Helium Hotspot Gateways

 See sample diagram for remote helium hotspot miner:

Sample drawing for remote helium hotspot miner with solar power back up



Approved Hotspots with RP-SMA Female Antenna Port


Indoor Coverage Improvement Accessories

Bobcat Miner 300 (BC00001)

900 MHz Outdoor Omni Antenna

Nebra (NBR-0022)

900 MHz Outdoor Omni Antenna

Syncrobit (SB-US915)

900 MHz Outdoor Omni Antenna


Kerlink (PDTIOT-IFE01)

900 MHz Outdoor Omni Antenna


RAK Wireless (RAK Hotspot V2)

900 MHz Outdoor Omni Antenna

Sensecap (XNM1US915)

900 MHz Outdoor Omni Antenna

Linxdot Hotspot

900 MHz Outdoor Omni Antenna


 Antenna Options Table

High Gain Antennas Key Specifications Available From These Online Stores 

RFWO9008NF 8dBi, 900-928 MHz Omni Directional Antenna

900 MHz Outdoor Omni Antenna


Frequency: 902 - 928 MHz
Gain: 8 dBi
Connectors: N-Female

RFWO9006NF 6dBi, 900-928 MHz Omni Directional Antenna

900 MHz Outdoor Omni Antenna

Frequency: 902 - 928 MHz
Gain: 6 dBi
Connectors: N-Female

RFWP9008NM 8dBi, 902-928 MHz Omni Directional Antenna

900 MHz Outdoor Panel Antenna

Frequency: 902 - 928 MHz ISM
Gain: 8 dBi
Connectors: N-Male

 RFWRD900RPSM 3dBi, 860-960 MHz Omni Directional Antenna900 MHz Indoor rubber duck antenna

Frequency: 860 - 960 MHz
Gain: 3 dBi
Connectors: RP-SMA Male
 Other 900MHz antennas are available here.


Antenna Mount Options

Mount Options  Available From These Online Stores  


RFWOMT10L1P5D Antenna Pole Mounting


RFMT8WBAL 8ft Non-Penetrating Water Ballasted Antenna Roof Mount

non-penetrating antenna mount


FMW4-YMST4 4ft x 1-1/4 inch Aluminum Mast and two 4 inch Standoff Wall Mounts

pole mount kit


100-00043 Advanced J-Mount with Extra Twist

buy RFWY072712D from eBay


FRM238HC 2.5 ft FRM Non-Penetrating Roof Mount

Non penetrating roof mount



170011 Magnetic Antenna Base SMA connectors, CLF cable - 1.6ft


buy RFWY072712D from eBay



FCC Guidelines

Most privately operated LoRaWAN devices operate in the 900 MHz ISM band. FCC part 15 outlines the requirements for this 902-928 MHz band use. Summary of the regulations:

  • Maximum transmitter output power fed into the antenna is 30dBm (1 watt).
  • Maximum EIRP (total transmit power (dBm) to antenna gain (dBi) minus any losses in cabling and connector/transmission line) should be 36 dBm.


For more information on operation within the bands 902-928 MHz, 2400-2483.5 MHz, and 5725-5850 MHz check this link.