50km Bluetooth Module: Meet the MultiNav Pro+ BLE
RFOXiA Long Range Bluetooth Module
The 50km Bluetooth Module Redefining What Wireless Can Do
For years, engineers, drone builders, and IoT developers have faced the same frustrating wall: Bluetooth stops at 100 meters. Maybe 200 meters on a good day, with line of sight, no interference, and a prayer. The moment your project demands real range — a drone at altitude, a remote sensor array, an autonomous robot working across a field — commodity BLE modules simply collapse.
That wall no longer exists.
The MultiNav Pro+ BLE from RFOXiA is the world's first 50km Bluetooth module available at a price point that makers, engineers, and researchers can actually access. Not a military system. Not vaporware. A real, FCC-certified, shipping hardware module that achieves what the entire BLE industry told you was impossible — and it does it for $59 for two units.
This is not an incremental improvement. This is a category redefinition.
Why the 50km Bluetooth Module Market Has Been Empty Until Now
To understand why the MultiNav Pro+ matters, you need to understand the gap it fills.
On one end of the spectrum, you have commodity BLE modules from Nordic, Silicon Labs, and Chinese OEM manufacturers. These are the chips inside your headphones, your fitness trackers, your smart home devices. They're cheap ($5–15), widely available, well-documented — and they max out at 80 to 100 meters of usable range. For consumer electronics, that's fine. For a drone builder who needs 5km of control range, it's useless.
On the other end of the spectrum, you have military-grade and industrial long-range communication systems. Companies like Taisync and DTC build impressive hardware. Ranges exceeding 150km are achievable. The price tags exceed $5,000 — often dramatically. These systems are not designed for a robotics engineer prototyping an autonomous platform. They're not designed for a researcher deploying environmental sensors across a river delta. They exist in a world most builders will never access.
The MultiNav Pro+ BLE occupies the space between those two worlds. It achieves genuine long-range performance — up to 50km between two airborne modules, up to 15–20km in man-to-drone configurations, and over 5km ground-to-ground — through optimized RF front-end design, external amplifiers, and advanced receiver sensitivity engineering. And it ships for $59 for two units.
No competitor exists at this price point with these specifications. That is not marketing language. That is the reality of the current market.
How the MultiNav Pro+ Achieves 50km Bluetooth Range
The question every engineer asks is the right one: how? Bluetooth is a short-range protocol. The physics of radio propagation are not negotiable. So how does a module that runs BLE achieve 50 kilometers?
The answer lies in several compounding engineering decisions.
RF Front-End Architecture
Commodity BLE modules integrate everything on a single chip with minimal external components. This is efficient for mass consumer production. It is catastrophic for range performance. The MultiNav Pro+ BLE uses a dedicated RF front-end with external power amplifiers and low-noise amplifiers that dramatically extend both transmit power and receive sensitivity. The result is a link budget that commodity modules cannot approach.
Receiver Sensitivity
Range is not just about how loud you transmit — it is about how quietly you can listen. Advanced receiver sensitivity means the MultiNav Pro+ can decode signals that would be completely invisible to a standard BLE chip. Combined with elevated transmit power, the effective link budget extends communication distances by orders of magnitude compared to standard BLE implementations.
Altitude and Geometry Effects
The three range figures for the MultiNav Pro+ reflect real-world deployment geometry:
- 5km ground-to-ground: Both modules at ground level, with terrain and environmental interference factored in
- 15–20km man-to-drone: One module paired with a smartphone, one module on an airborne platform — altitude eliminates ground reflection losses
- 50km drone-to-drone: Both modules airborne, ground reflections eliminated entirely, maximum link budget realized
This is not theoretical physics. This is engineering applied to real deployment scenarios.
The STM32WB07CCV6 Processing Core
At the heart of the MultiNav Pro+ BLE is the STM32WB07CCV6 — a dual-core wireless microcontroller from STMicroelectronics that manages both the BLE stack and user applications simultaneously. This is not a simple radio chip with a basic MCU attached. It is a capable processing platform that enables sophisticated application logic, real-time data handling, and seamless BLE stack operation without the conflicts and compromises that plague simpler architectures.
2Mbps Data Rate: Speed Meets Distance
Long range without usable data throughput is an academic exercise. The MultiNav Pro+ delivers both.
With support for up to 2Mbps data rate, the module handles demanding real-time applications without compromise. Streaming telemetry from a drone, transmitting live sensor arrays, executing bidirectional control with tight latency requirements — all of these are viable on the MultiNav Pro+ platform.
This matters practically. A drone control application needs not just range, but responsive, low-latency communication. A missed command at 10km altitude has consequences. The 2Mbps throughput combined with the module's link reliability means your control data, your sensor streams, and your telemetry all arrive when they need to.
Ecosystem Integration: More Than a 50km Bluetooth Module
The MultiNav Pro+ BLE is not a standalone component — it is the communication backbone of a complete wireless development ecosystem. Four distinct interface connectors allow seamless integration with the other modules in the MultiNav Pro+ family:
- GNSS Interface: Connect the MultiNav Pro+ GNSS module for 1.5-meter accuracy positioning at 18Hz fix rate — fast enough for tracking high-speed drone platforms
- Sensors Interface: Connect the Sensors Module for environmental monitoring across seven parameters: temperature, humidity, air pressure, air quality, accelerometer, gyroscope, and magnetometer
- Motors & Battery Management Interface: Connect motor controllers, ESCs, and battery management systems for complete autonomous platform control
- Programming Interface: SWD programming interface for full firmware customization and development
This modular architecture means you are not building around a chip — you are building on a platform. Your hardware stack grows with your project.
RFOXiA Connect App: Control at Your Fingertips
Hardware without software is a circuit board. The MultiNav Pro+ BLE pairs with the RFOXiA Connect app on iOS and Android to deliver a complete mobile control and monitoring interface.
The app's Control Screen delivers:
- PS5-style controller interface for drone and robot operation
- Live map with real-time GPS tracking showing your platform's position
- Live sensor data display for environmental monitoring in the field
- Automation center for programming autonomous behaviors
Critically, the app operates completely without internet connection. Your control link is the BLE module. No towers. No cellular. No data plan. No dependency on infrastructure that may not exist where you're operating. At 20km of man-to-drone range, that independence is not a feature — it is a fundamental requirement.
You can explore the full module and place your order at the RFOXiA Long Range Bluetooth Module product page.
BLE Chat: Internet-Independent Mesh Communication
One of the most compelling capabilities of the MultiNav Pro+ BLE platform is its mesh communication functionality — what RFOXiA calls BLE Chat.
Multiple MultiNav Pro+ BLE modules can be configured as communication nodes, enabling direct text, data, and voice communication between users completely independent of any internet infrastructure. No cell towers. No satellite connection. No monthly subscription. No fragile dependency on systems that fail exactly when you need them most.
Applications for this capability are significant:
- Disaster response teams operating in infrastructure-collapsed environments
- Remote expedition groups beyond cellular coverage
- Field research teams coordinating across large geographic areas
- Industrial site communication in environments where cellular is unreliable or prohibited
- Off-grid operations of any kind requiring reliable team coordination
When every other communication system has failed, a network of MultiNav Pro+ BLE modules keeps talking.
Open Source and Fully Programmable
The MultiNav Pro+ BLE is not a black box. Full open-source firmware access is available through the RFOXiA GitHub repository, and the SWD programming interface allows complete customization of module behavior for any application.
This matters for serious developers. You are not locked into a fixed feature set. You are not waiting for a manufacturer to release a firmware update. You own the code. You own the behavior. You build exactly what your application demands.
For developers who want to accelerate firmware development further, the RFOXiA Club AI Firmware Builder allows you to describe your application in plain language and receive production-ready firmware with full source code. What previously took months of embedded development can now be prototyped in hours. The platform is available at rfoxia.com after free signup — new members receive a $10 welcome credit toward hardware.
Compact, Durable, and Field-Ready
At 57mm × 47mm with a fixing frame footprint of 54mm × 34mm featuring corner mounting holes, the MultiNav Pro+ BLE is engineered for real-world integration. It fits into space-constrained designs without compromise, mounts cleanly into custom enclosures, and survives the operational demands of field deployment.
The integrated high-gain chip antenna with 140mm antenna length delivers strong signal performance without requiring external antenna management. The integrated RTC crystal provides precise timing for synchronization-critical applications — essential for navigation systems, data logging with accurate timestamps, and time-sensitive sensor fusion.
Precision Timing with Integrated RTC
Many developers overlook timing accuracy until it costs them data integrity or synchronization failures in the field. The MultiNav Pro+ BLE's integrated RTC crystal is not an afterthought — it is a deliberate design choice for applications where timing precision is non-negotiable.
For navigation systems correlating GPS fixes with sensor data, for data loggers that must timestamp measurements accurately, for mesh networks that require synchronized communication windows — accurate real-time clock function is foundational. It is built in from the start.
Who Builds With the MultiNav Pro+ BLE?
The MultiNav Pro+ 50km Bluetooth module serves a specific kind of builder: technically capable, demanding on specifications, unwilling to compromise on performance, and unwilling to pay military-grade prices for professional-grade hardware.
Drone builders and FPV pilots find in the MultiNav Pro+ a control and telemetry link that extends far beyond what any other BLE solution can offer — with the app integration to match.
Robotics engineers building autonomous ground and aerial platforms use the ecosystem integration to combine communication, positioning, environmental sensing, and motor control in a unified hardware stack.
IoT developers deploy MultiNav Pro+ nodes across large geographic areas — agricultural land, industrial facilities, research sites — where infrastructure does not exist and cellular is not practical.
Field researchers working in environmental monitoring, precision agriculture, ecological research, and climate science gain a sensor and communication platform that operates independently of any external infrastructure.
Embedded developers use the open-source firmware, SWD programmability, and AI-assisted development tools to rapidly prototype and deploy custom wireless applications at a fraction of traditional development cost and time.
FCC Certification: The Professional Standard
Every product in the RFOXiA lineup — including the MultiNav Pro+ BLE — carries FCC certification. This is not a detail. For developers building products that will be sold, deployed commercially, or integrated into customer-facing applications, FCC certification is the difference between a prototype and a product.
FCC-certified hardware can be integrated into commercial products with significantly reduced regulatory burden. It opens doors to distribution through major electronics channels — DigiKey, Mouser, Digi-Key — that require certification as a condition of listing. It signals to enterprise customers that the hardware meets professional standards.
When you specify the MultiNav Pro+ BLE into your project, you are specifying FCC-certified hardware backed by a company with an established manufacturing infrastructure and a track record of completed Kickstarter campaigns.
Complete Specifications at a Glance
| Specification | Value |
|---|---|
| Drone-to-Drone Range | 50km |
| Man-to-Drone Range | 15–20km |
| Ground-to-Ground Range | 5km+ |
| Data Rate | 2Mbps |
| Processing Core | STM32WB07CCV6 |
| Module Size | 57mm × 47mm |
| Antenna Length | 140mm |
| Fixing Frame | 54mm × 34mm |
| Interfaces | GNSS, Sensors, Motors/Battery, Programming |
| Certification | FCC Certified |
| Firmware | Open Source (GitHub) |
| Programming | SWD |
| App Compatibility | iOS & Android (RFOXiA Connect) |
| Price | $59 for 2 units |
The RFOXiA Ecosystem: Beyond the 50km Bluetooth Module
The MultiNav Pro+ BLE is the communication core of a complete wireless development ecosystem. Pair it with the full suite:
- MultiNav Pro+ GNSS Module ($49) — 1.5m accuracy, 18Hz fix rate, FCC certified
- MultiNav Pro+ Sensors Module ($39) — 7 sensors in one board, FCC certified
- Power/Program Kit ($119) — supercapacitor-based, 5-minute charge, 24-hour runtime
- Developer Bundle ($199) — all four modules in one package with AI firmware platform access
The Developer Bundle represents the fastest path from idea to functional wireless system. With all modules integrated, the AI Firmware Builder in RFOXiA Club, and the RFOXiA Connect app, you can have a working prototype of almost any wireless application within hours of unboxing.
And through RFOXiA's Data Network, users who deploy the Sensors Module in verified outdoor locations can earn passive rewards — $0.08 to $0.40 per day — by contributing hyper-local environmental data to the network. Your hardware works while you sleep.
Why This 50km Bluetooth Module Changes Everything
The honest summary: the MultiNav Pro+ BLE exists in a market segment that was previously empty. There is no other 50km Bluetooth module available to makers, engineers, and researchers at anywhere near this price point. The commodity BLE market stops at 100 meters. The military market starts at $5,000. RFOXiA built the hardware that belongs in the middle — and built the entire ecosystem around it.
If your project has ever been constrained by wireless range, if you have ever accepted a shorter operational radius because long-range options were inaccessible, if you have ever paid for cellular or satellite infrastructure because Bluetooth could not reach — the MultiNav Pro+ changes your options.
FCC certified. Open source. Shipping now.
Explore the full specifications and order the RFOXiA Long Range Bluetooth Module directly from rfoxia.com. New members who join RFOXiA Club receive a $10 welcome credit toward their first hardware purchase.
Frequently Asked Questions
Is the 50km range tested or theoretical? The 50km figure applies to drone-to-drone configurations where both modules are airborne and ground reflections are eliminated. The 5km ground-to-ground and 15–20km man-to-drone figures reflect real-world deployment conditions. These are engineering specifications based on the module's link budget, not marketing estimates.
Does the module require the RFOXiA Connect app to function? No. The app provides a convenient control and monitoring interface, but the module operates independently and can be programmed via SWD for fully custom applications. The open-source firmware is available on GitHub.
Is the MultiNav Pro+ BLE compatible with other BLE devices? The module uses standard BLE protocol and can communicate with BLE-enabled devices. Full extended-range performance is achieved when using two MultiNav Pro+ BLE modules together, as both endpoints must have the optimized RF front-end to realize the link budget.
Can I integrate this into a commercial product? Yes. FCC certification on the MultiNav Pro+ BLE significantly reduces regulatory burden for commercial product integration. Consult your specific regulatory requirements based on your target market and product category.
What programming environment is supported? The STM32WB07CCV6 core supports standard STM32 development tools. SWD programming is accessible through the dedicated Programming interface connector. Full source code is available on the RFOXiA GitHub repository. The AI Firmware Builder in RFOXiA Club accelerates custom development substantially.
Ready to build further than you ever thought possible? Start with the RFOXiA Long Range Bluetooth Module — two FCC-certified 50km Bluetooth modules for $59, backed by a complete wireless development ecosystem.
Written by: Moamen Mohamed LinkedIn