The Long Range Bluetooth Chip That Rewrites What BLE Can Do
RFOXiA Long Range Bluetooth Module
Meet the Long Range Bluetooth Chip Built for Builders Who Refuse to Accept 100-Meter Limits
Every hardware developer has hit the wall. You design a drone, a robot, or a remote sensing station — and then you discover the uncomfortable truth about standard Bluetooth: it dies at 100 meters, maybe 150 on a good day with clear line of sight. The entire wireless world between 100 meters and military-grade radio systems costing thousands of dollars has been a dead zone for makers and engineers. Until now.
The MultiNav Pro+ BLE Module from RFOXiA is the long range bluetooth chip that closes that gap permanently. It reaches 5KM when paired with a smartphone. It reaches 15–20KM in man-to-drone configurations. And when two modules communicate directly — drone to drone — it achieves an extraordinary 50KM range using Bluetooth Low Energy technology.
This is not a modified commodity module. This is purpose-engineered RF hardware, FCC certified, available at $59 for two units, and it ships today.
Why Standard Bluetooth Chips Fail at Range
To understand what makes the MultiNav Pro+ exceptional, you first need to understand why every other BLE module on the market tops out at under 150 meters.
Commodity BLE chips — the kind you find in most development boards, consumer electronics, and maker modules — are optimized for power consumption and cost, not range. They run minimal transmit power, use integrated PCB trace antennas, and have receiver sensitivity that is functional but not exceptional. For a fitness tracker communicating with a phone in your pocket, that is perfectly fine. For a drone flying 2KM away, it is completely inadequate.
The physics of RF propagation demand a different approach when range is the priority. Transmit power matters. Receiver sensitivity matters even more — it determines the weakest signal the radio can successfully decode. Antenna design, front-end filtering, and amplifier architecture all compound together to produce the final link budget that determines real-world range.
RFOXiA engineered the MultiNav Pro+ from the ground up with range as the primary objective — without sacrificing the 2Mbps data rate or the BLE protocol compatibility that makes it usable with standard smartphones and development tools.
The Architecture Behind the 50KM Long Range Bluetooth Chip
STM32WB07CCV6 Processing Core
At the heart of the MultiNav Pro+ sits STMicroelectronics' STM32WB07CCV6 — a dual-core wireless microcontroller specifically architected for BLE applications. One core manages the BLE stack with deterministic real-time performance. The second core runs your user application simultaneously. This architecture eliminates the latency penalties that occur when a single processor has to context-switch between radio management and application logic.
For drone control, where a 50ms delay can mean the difference between a smooth flight correction and a crash, this processing architecture is not a nice-to-have. It is essential.
RF Front-End and High-Gain Antenna
The radio front-end is where the MultiNav Pro+ separates itself from every commodity long range bluetooth chip on the market. An optimized RF front-end with external amplification stages and carefully tuned filtering delivers receiver sensitivity that allows the module to decode signals that would be completely invisible to a standard BLE radio.
The integrated high-gain chip antenna with a 140mm antenna element provides directional gain without requiring an external antenna assembly. You get performance that would normally require a bulky external antenna — in a package that integrates directly onto your board.
2Mbps Data Rate at Full Range
Range without bandwidth is useless for most real applications. The MultiNav Pro+ maintains its 2Mbps data rate while achieving these range figures. That means you can stream real-time sensor data, GPS coordinates, and control commands simultaneously — even at distances where most BLE modules have lost connection entirely.
Real-World Range: Three Deployment Scenarios
The MultiNav Pro+ achieves different range figures depending on deployment configuration. Here is what each scenario looks like in practice.
Ground-to-Ground: 5KM
When one module is paired with your smartphone and the second module is paired with another user's smartphone — both on the ground — the system achieves 5KM range. This is the configuration for mesh communication networks, field team coordination, and ground-based IoT deployments. Five kilometers is roughly the distance across Manhattan. It is 50 times what a commodity BLE module delivers.
Man-to-Drone: 15–20KM
When one module connects to a smartphone and the second module is mounted on a drone, the elimination of ground-level multipath interference and the altitude advantage of the airborne module extends range to 15–20KM. This is the configuration for long-range drone control, aerial inspection, and UAV telemetry applications.
Drone-to-Drone: 50KM
When both modules are airborne — mounted on two drones communicating directly — ground reflections are eliminated entirely and the line-of-sight path between modules is unobstructed. In this configuration, the long range bluetooth chip achieves its full 50KM capability. This enables drone relay networks, swarm coordination, and search-and-rescue aerial mesh systems that were previously impossible without expensive proprietary radio systems.
The Complete Ecosystem: More Than Just a Module
A long range bluetooth chip that only handles radio communication would already be remarkable. The MultiNav Pro+ goes further — it is the foundation of a complete wireless development ecosystem.
Four Application Interfaces
The module exposes four distinct interface connectors:
- GNSS Interface — connects directly to the MultiNav Pro+ GNSS module for precision location at 18Hz fix rate
- Sensors Interface — connects to the Sensors module for temperature, humidity, pressure, air quality, accelerometer, gyroscope, and magnetometer data
- Motors & Battery Management Interface — connects motor controllers and battery management systems for full autonomous vehicle integration
- Programming Interface — SWD interface for firmware development, debugging, and customization
This interface architecture means the BLE module is not an isolated component. It is the communication backbone of a complete autonomous system.
RFOXiA Connect App
The RFOXiA Connect app (iOS and Android) transforms your smartphone into a professional control station for MultiNav Pro+ systems. The app features a PS5-style controller interface for precise drone and robot control, a live map with real-time GPS tracking fed by the GNSS module, live sensor data visualization, and an automation center for defining control logic and triggers.
Critically, the app works completely without an internet connection. The BLE link between your phone and the module is the entire communication path. No cellular data. No Wi-Fi. No cloud dependency. Your system works wherever your drone can fly.
BLE Chat: Internet-Independent Mesh Communication
One of the most unexpected capabilities of the MultiNav Pro+ is its BLE Chat functionality. When multiple modules are deployed, they form a communication mesh that enables text messaging, data transfer, and voice calls between users — with zero internet dependency.
This is not a novelty feature. It is a serious capability for disaster response teams operating after infrastructure failure, remote expedition teams beyond cellular range, military and security operators who cannot rely on public networks, and research teams in remote field locations where cellular does not reach.
The long range bluetooth chip becomes the communication infrastructure itself.
Physical Design: Compact, Durable, Integration-Ready
The MultiNav Pro+ measures 57mm × 47mm with a fixing frame footprint of 54mm × 34mm and corner mounting holes at 51mm × 39mm spacing. The 140mm antenna element is integrated — no external antenna connector required unless your application demands it.
The board is designed for real field deployment. The fixing frame with corner mounting holes means it integrates securely into drone frames, enclosures, and panel mounts without improvised solutions. The compact form factor fits into space-constrained designs that would reject larger radio modules.
Open Source and Fully Programmable
The MultiNav Pro+ is fully open source and programmable via the SWD interface. You are not locked into RFOXiA's firmware. You can write custom firmware from scratch, modify the provided open-source firmware for your specific application, or use RFOXiA's AI Firmware Builder to generate production-ready custom firmware by describing your application in plain English.
The AI Firmware Builder, integrated into the RFOXiA Club Dev Hub, reduces firmware development from months of work to hours. Describe what you want your system to do. The AI generates complete, compilable, production-ready firmware with full source code. You own it, you modify it, you deploy it.
This openness is intentional. RFOXiA's position is that professional-grade hardware belongs in the hands of every builder — not locked behind proprietary ecosystems with opaque firmware and no customization path.
Integrated RTC for Time-Sensitive Applications
The MultiNav Pro+ includes an integrated RTC (Real-Time Clock) crystal that provides precise timing independent of external time sources. For applications where data timestamp accuracy matters — synchronized sensor logging, navigation systems, multi-node mesh networks where timing alignment is critical — the onboard RTC ensures your system maintains accurate time reference even in environments without GPS lock or network connectivity.
Who Is the MultiNav Pro+ Built For?
FPV Pilots and Drone Builders
The man-to-drone range of 15–20KM and drone-to-drone range of 50KM make the MultiNav Pro+ the most capable affordable radio link available for long-range FPV and UAV platforms. The 2Mbps data rate handles telemetry, control, and sensor streaming simultaneously without saturation.
Robotics Engineers
The Motors & Battery Management interface and the PS5-style controller app create a complete control system for ground robots, UGVs, and autonomous platforms. The BLE Chat mesh enables multi-robot coordination without infrastructure.
IoT and Embedded Developers
The open-source firmware, AI Firmware Builder, and four-interface ecosystem make the MultiNav Pro+ the fastest path from concept to deployed IoT system for developers building custom wireless applications. Check out the RFOXiA Long Range Bluetooth Module for full technical documentation and ordering information.
Field Researchers
The sensor ecosystem integration, GNSS precision at 18Hz, and the internet-independent operation make this the right platform for environmental researchers, agricultural technologists, and scientific teams operating beyond infrastructure.
Disaster Response and Emergency Teams
The BLE Chat mesh communication capability, combined with the offline-first design, makes the MultiNav Pro+ a credible emergency communication tool for teams operating after infrastructure failure.
FCC Certified and Ready to Deploy
FCC certification is the credential that separates professional hardware from hobbyist modules. It means the MultiNav Pro+ has been tested by an accredited laboratory and confirmed to meet US federal emissions standards. It means you can deploy it commercially, include it in products you sell, and use it in regulatory-sensitive applications without legal exposure.
Every module in the RFOXiA product line carries FCC certification. This is not a future plan. It is a current reality that allows the MultiNav Pro+ to ship immediately and integrate into commercial products today.
Competitive Landscape: Nothing Else Exists at This Price Point
Let us be direct about where the MultiNav Pro+ sits in the market.
Commodity BLE modules from Nordic Semiconductor, Silicon Labs, and Chinese manufacturers deliver 80–150 meters of range at $5–15 per unit. They are appropriate for applications where range is not a constraint. They are completely inadequate for drone control, field mesh networks, or any application requiring more than 150 meters.
Military and industrial long-range radio systems achieve comparable or greater ranges — but at $5,000 to $50,000+ per unit. They are not accessible to hardware developers, research teams, or companies building products at scale without defense-industry budgets.
The MultiNav Pro+ occupies the space between these two worlds. It delivers professional-grade long-range performance that was previously accessible only with military budgets — at $59 for two units. No other product on the market currently offers this combination of specifications, ecosystem integration, FCC certification, and price.
If you are a developer, researcher, or engineer who has been waiting for a long range bluetooth chip that actually performs at the ranges your application demands — this is it. The RFOXiA Long Range Bluetooth Module page has complete specifications, interface documentation, and ordering information.
The RFOXiA Data Network: Your Hardware Earns While It Works
For developers who deploy MultiNav Pro+ systems with the full sensor ecosystem, RFOXiA's data network creates a passive income stream from environmental data contribution. Sensors modules streaming verified GPS-located environmental data to the RFOXiA network earn between $0.08 and $0.40 per day depending on location scarcity, network tier, and uptime consistency.
This is not a hypothetical future feature. The data network is live. The server infrastructure is operational. Early contributors lock in higher rates as Pioneer/Founding network members. The aggregate dataset — hyper-local, GPS-verified, second-level temporal resolution — is sold to agricultural technology companies, insurance companies, smart city operators, and research institutions who cannot get this resolution from public weather APIs.
Your hardware deployment earns you money while it runs. The long range bluetooth chip becomes the communication backbone of a revenue-generating sensor node.
Getting Started with the MultiNav Pro+ BLE Module
The MultiNav Pro+ ships as a pair — two modules for $59. Both units are fully configured and ready to connect out of the box. The RFOXiA Connect app is free on Android (iOS pending App Store approval) and pairs with the module immediately via standard Bluetooth.
For developers who want the complete ecosystem from day one, the Developer Bundle includes the BLE Module, GNSS Module, Sensors Module, and Power/Program Kit — everything needed to build a fully autonomous wireless sensing and control platform.
New members who sign up to RFOXiA Club receive $10 in welcome credits, with additional credits earned through the platform's development funnel. Those credits apply directly toward hardware purchases.
The platform is live. The hardware is in stock. The FCC certifications are current. This is not a crowdfunding campaign for a concept — it is a shipping product from a team that has fulfilled four Kickstarter campaigns and built a real ecosystem around this hardware.
If your project needs a long range bluetooth chip that actually reaches the distances your application demands, there is now one answer. Visit the RFOXiA Long Range Bluetooth Module product page to order, review full specifications, and join the RFOXiA developer community.
Summary: MultiNav Pro+ BLE Module Specifications
| Specification | Value |
|---|---|
| Ground-to-Ground Range | 5KM |
| Man-to-Drone Range | 15–20KM |
| Drone-to-Drone Range | 50KM |
| Data Rate | 2Mbps |
| Processing Core | STM32WB07CCV6 |
| Module Dimensions | 57mm × 47mm |
| Antenna Length | 140mm |
| Mounting Hole Spacing | 51mm × 39mm |
| Certification | FCC Certified |
| Programming Interface | SWD |
| RTC | Integrated crystal |
| App Compatibility | iOS and Android |
| Price | $59 (2 units) |
The gap between 100 meters and $5,000 is closed. The long range bluetooth chip that professional developers have needed exists, it is certified, and it ships today.
Written by: Moamen Mohamed LinkedIn