Understanding GNSS Firmware & Licenses — What You’re Really Paying For
Buying a GNSS receiver is more than just choosing the hardware — you’re also paying for firmware and software licenses that unlock critical functions like RTK, NTRIP, and multi-constellation tracking.
Before you buy new or used equipment, it’s essential to understand what firmware and licensing actually control — and how it affects your field performance.
🔑 What Is GNSS Firmware?
Firmware is the embedded software that controls your GNSS receiver’s core functions. Manufacturers like Leica, Trimble, Topcon, and CHCNAV release firmware updates to fix bugs, improve performance, or support new features.
But many premium features — like RTK positioning or Galileo tracking — are locked behind licenses that must be purchased separately.
🧩 Common GNSS License Types
| License Type | Function Unlocked |
|---|---|
| RTK (Real-Time Kinematic) | Centimeter-level accuracy, base/rover use |
| NTRIP Client | Receive corrections over internet |
| Multi-Constellation | Track Galileo, BeiDou in addition to GPS/GLONASS |
| Tilt Compensation | Measure points even when pole is not vertical |
| Internal Radio (UHF/LoRa) | Use as standalone base without NTRIP |
Some brands lock all features until you buy full licenses. Others (like Emlid) include most features upfront.
💡 How to Check a Receiver’s License Status
If you’re buying used, it’s important to verify which licenses are activated:
- 📱 Use the manufacturer’s utility software or app (e.g. Leica Captivate, Trimble Access)
- 📄 Request a license report or certificate from the seller
- 🔒 Ask specifically: “Is RTK activated?” and “Are Galileo/BeiDou supported?”
Tip: A cheaper receiver without RTK is often not usable for modern survey workflows — unless you’re only post-processing.
💸 Example: Leica GS16 License Add-ons
| Feature | Price (Est.) |
|---|---|
| RTK License | $800 – $1,200 |
| BeiDou & Galileo Tracking | $500 – $700 |
| SmartLink or SmartCheck | $300 – $600 |
Always factor these costs into your decision when comparing used vs. new equipment.
⚠️ Risks of Buying GNSS Without a License
Receivers without proper licenses may still track satellites but won’t deliver FIX-quality accuracy. You may be stuck with:
- RTK Float (decimeter errors)
- No NTRIP correction compatibility
- No base/rover capability
- Incompatibility with survey apps like FieldGenius
📬 Final Advice Before You Buy
- 🔍 Always ask for firmware version and license details
- 📞 Contact the manufacturer for transferability policies
- 📊 Know your workflow — don’t pay for features you won’t use
Understanding what you’re paying for ensures your GNSS gear is ready to perform — and not just expensive plastic.
🙋 Need Help Choosing the Right GNSS Receiver?
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Next article: Fixed vs. Float — Understanding RTK Accuracy Levels