What is LongFi?

LongFi is the proprietary wireless networking architecture originally developed by Nova Labs (formerly Helium Inc.) for the Helium IoT Network, one of the world's largest decentralized wireless infrastructures for the Internet of Things (IoT). Rather than being a standalone radio protocol, LongFi combines the LoRaWAN® wireless communication standard with Helium's decentralized network architecture, allowing compatible IoT devices to transmit small amounts of data over long distances while enabling independent hotspot owners to provide network coverage.

Unlike conventional cellular IoT networks that rely on licensed spectrum and centralized operators, the Helium Network is built by individuals and organizations that deploy compatible gateways (Hotspots). These gateways create community-driven wireless coverage and securely route data from IoT devices to cloud applications. Historically, Hotspot operators were rewarded through Helium's blockchain-based incentive system, which encouraged rapid expansion of network coverage. Today, the Helium ecosystem continues to evolve while maintaining its focus on low-cost, low-power IoT connectivity.

LongFi is particularly well suited for battery-powered sensors that periodically transmit small packets of information such as environmental measurements, GPS coordinates, equipment status, utility meter readings, agricultural data, or industrial telemetry. Because transmissions are infrequent and highly optimized, battery life often extends for several years, making LongFi an excellent choice for large-scale IoT deployments.

Like LoRaWAN, LongFi connectivity offers several important characteristics:

• Bidirectional communication
• Long-distance wireless coverage
• Very low power consumption
• Low data rates optimized for sensor traffic
• Excellent scalability for thousands of connected devices

These features make LongFi an ideal networking technology for smart cities, Industrial IoT (IIoT), agriculture, logistics, utilities, environmental monitoring, oil and gas, mining, building automation, and countless other sensor-based applications.

Is LongFi the Same as Long-Range WiFi?

No. LongFi is not WiFi, nor is it based on any IEEE 802.11 wireless LAN standard.

Traditional long-range WiFi uses directional antennas and high-gain access points to establish point-to-point or point-to-multipoint wireless bridges over distances of several kilometers while maintaining relatively high data throughput. These systems are commonly used for video surveillance, campus networking, Internet backhaul, and broadband connectivity.

LongFi, on the other hand, is designed specifically for low-bandwidth IoT communications. Instead of transmitting large amounts of data, LongFi focuses on sending small sensor messages while maximizing communication range and minimizing power consumption. As a result, devices can often operate for years using only a small battery.

LongFi vs Wi-Fi HaLow

LongFi vs. LoRaWAN

Although the terms are sometimes used interchangeably, they are not identical.

LoRaWAN is an open networking protocol that defines how LoRa-enabled devices communicate with gateways and network servers. Organizations can deploy private or public LoRaWAN networks using commercially available gateways.

LongFi builds upon LoRaWAN technology by integrating it with the Helium IoT Network's decentralized infrastructure. Compatible Hotspots provide public wireless coverage, allowing authorized devices to communicate without requiring organizations to build their own private gateway infrastructure.

LongFi vs. Bluetooth Low Energy (BLE)

Bluetooth Low Energy (BLE) is designed primarily for Personal Area Networks (PAN), wearable devices, smart home accessories, and short-range communications.

While BLE provides excellent battery life, its transmission range is generally measured in tens of meters rather than kilometers. LongFi provides dramatically greater coverage and is far better suited for remote sensors, industrial monitoring, agriculture, asset tracking, and city-wide IoT deployments.

LongFi vs. Cellular IoT (NB-IoT, LTE-M, and 5G)

Cellular IoT technologies such as NB-IoT, LTE-M, and 5G provide excellent coverage and higher data throughput but require licensed spectrum and subscriptions to mobile network operators.

LongFi operates within license-free Industrial, Scientific and Medical (ISM) frequency bands, reducing deployment costs while providing long-range communications for applications where only small amounts of sensor data must be transmitted. For many monitoring and telemetry applications, LongFi offers a more economical alternative to cellular connectivity.

Technical Specifications of LongFi

Frequency Bands

LongFi operates within regional sub-GHz ISM frequency bands that vary according to local regulations:

• 915 MHz — United States, Canada, Australia, and several Latin American countries
• 868 MHz — Europe
• 433 MHz — Selected Asian and international markets

Because spectrum allocations differ between countries, users should always verify local regulatory requirements before deploying wireless equipment.

LongFi Range

Sub-GHz frequencies provide excellent propagation characteristics compared with higher-frequency wireless technologies such as 2.4 GHz WiFi or Bluetooth.

Depending on antenna height, terrain, line-of-sight conditions, gateway placement, and local interference, LongFi communications typically range between 1 and 10 miles (1.6–16 km), with considerably greater distances possible under ideal conditions using elevated gateways and high-gain antennas.

Low Energy Consumption

LongFi was specifically designed for battery-powered IoT sensors.

Devices typically remain in sleep mode for extended periods, waking only to transmit brief packets of information before returning to low-power operation. This efficient duty cycle enables battery life measured in years rather than months, significantly reducing maintenance costs.

Data Rate

LongFi prioritizes communication range and battery efficiency rather than throughput.

Typical data rates range from approximately 0.3 kbps to 50 kbps, depending on LoRa spreading factors, regional configurations, and network settings. These speeds are ideal for sensor readings, telemetry, alarms, GPS coordinates, and machine status reports.

Modulation

LongFi uses LoRa Chirp Spread Spectrum (CSS) modulation, which provides excellent receiver sensitivity and robust resistance to interference while enabling long-distance communications at extremely low power levels.

Security

Security is fundamental to LongFi deployments.

Multiple layers of protection include:

• AES-128 encryption
• Secure device authentication
• Unique device identifiers
• End-to-end encrypted communications
• Secure network session keys
• Over-the-Air Activation (OTAA)

These mechanisms help protect transmitted data while preventing unauthorized network access.

Firmware Updates

Many LongFi-compatible devices support Over-the-Air (OTA) firmware updates, allowing manufacturers to deploy software improvements, bug fixes, and security patches without requiring physical access to installed equipment.

Compatible Chipsets

LongFi uses the same LoRa radio technology found in many Semtech transceivers, including:

• SX1272
• SX1276
• SX1261
• SX1262

These highly integrated chipsets are widely used in IoT sensors, industrial equipment, agricultural devices, and environmental monitoring systems.

Common LongFi Applications

LongFi supports a wide variety of commercial and industrial IoT applications, including:

• Smart Cities
• Industrial IoT (IIoT)
• SCADA systems
• Smart agriculture
• Precision irrigation
• Livestock tracking
• Environmental monitoring
• Air quality monitoring
• Weather stations
• Utility metering
• Water and gas meters
• Oil and gas monitoring
• Pipeline supervision
• Mining operations
• Asset tracking
• Fleet management
• Cold-chain logistics
• Building automation
• Alarm systems
• Remote equipment monitoring
• Predictive maintenance
• Smart parking
• Waste management
• Smart lighting

These applications typically prioritize low operating costs, long battery life, and reliable long-range communication over high data throughput.

Antennas for LongFi Networks

Antenna selection plays a critical role in overall network performance.

Depending on the installation, suitable antenna types include:

Omnidirectional Antennas

Provide 360-degree coverage for gateways serving sensors distributed in all directions. Commonly installed on rooftops, utility poles, towers, and industrial facilities.

Fiberglass Antennas

Designed for permanent outdoor installations, fiberglass antennas provide excellent resistance to UV exposure, moisture, corrosion, and harsh weather, making them ideal for industrial, agricultural, marine, and municipal environments.

Yagi Antennas

High-gain directional antennas suitable for extending coverage toward remote sites or establishing point-to-point links.

Panel Antennas

Offer directional coverage across defined sectors and are frequently used on buildings, campuses, and industrial facilities.

Magnetic Mount Antennas

Ideal for vehicles, temporary installations, laboratory testing, and mobile monitoring applications.

Embedded and PCB Antennas

Compact antennas integrated directly into IoT devices where space is limited.

RF Cables and Connectors

The performance of any LongFi installation also depends on minimizing cable loss.

Data Alliance offers low-loss coaxial cable assemblies using cables such as:

• LMR-195
• LMR-200
• LMR-240
• LMR-400
• RG58
• RG174
• RG316

Compatible RF connectors include:

• SMA
• RP-SMA
• N-Type
• TNC
• BNC
• FME
• MCX
• MMCX
• U.FL / I-PEX
• MHF4
• MHF4L

Selecting the proper cable and connector combination helps maximize signal strength and overall network reliability.

Installation Best Practices

Reliable LongFi performance depends on proper RF installation practices.

Recommended guidelines include:

• Mount antennas as high as practical.
• Maintain clear line-of-sight whenever possible.
• Use low-loss coaxial cable.
• Minimize cable length.
• Waterproof all outdoor RF connections using self-amalgamating tape and UV-resistant materials.
• Install lightning protectors where appropriate.
• Properly ground outdoor antenna systems.
• Maintain adequate separation from other antennas to reduce interference.

Data Alliance LongFi Solutions

Data Alliance offers a comprehensive selection of RF products for LongFi, LoRaWAN, and other LPWAN applications, including omnidirectional, directional Yagi, panel, fiberglass, magnetic-mount, embedded, and vehicle antennas covering 433 MHz, 868 MHz, and 915 MHz frequency bands. Additional products include low-loss coaxial cable assemblies, RF adapters, surge protectors, mounting hardware, weatherproof accessories, and custom cable assemblies built with SMA, RP-SMA, N-Type, TNC, BNC, U.FL, I-PEX, MHF4, MHF4L, and many other connector interfaces. Combined with experienced technical support, these solutions help customers optimize wireless coverage, maximize gateway performance, and deploy reliable IoT networks across industrial, commercial, municipal, and research applications.

Conclusion

LongFi has become an important technology for long-range, low-power IoT communications by combining the proven capabilities of LoRaWAN with the decentralized infrastructure of the Helium IoT Network. Its ability to provide kilometer-scale coverage, extremely low power consumption, secure communications, and scalable public network access makes it an attractive solution for smart cities, industrial automation, agriculture, environmental monitoring, logistics, utilities, and asset tracking. As IoT deployments continue to expand worldwide, selecting the proper antennas, low-loss coaxial cables, RF connectors, and installation accessories is just as important as choosing the appropriate wireless protocol. With an extensive portfolio of LongFi- and LoRa-compatible antennas, cable assemblies, RF adapters, and mounting solutions, Data Alliance helps organizations design dependable LPWAN systems backed by knowledgeable technical support and application-specific expertise.