StellaX GNSS Chip
A new full-frequency, anti-interference positioning engine that tracks every constellation and squeezes roughly 15% more accuracy out of canopy, urban-canyon, and partially blocked sites.
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CHCNAV i76 Palm-Size Visual IMU-RTK GNSS Receiver
CHCNAV i76 Palm-Size Visual RTK GNSS Receiver
The full RTK rover that disappears into your hand
If you've spent a day chasing points with a heavy receiver and a long pole, the CHCNAV i76 will feel like cheating. It's a complete visual IMU-RTK GNSS rover — full-constellation positioning, calibration-free tilt, and a live camera view — built into a 450-gram body roughly the size of your palm. Less weight on the pole, less fatigue by mid-afternoon, and a case that finally fits behind the seat instead of filling the truck bed.
What makes the i76 different from a "smaller receiver" is the camera. Two wide-angle lenses feed a real-time augmented-reality view in LandStar, so instead of staring at a number and shuffling around, you watch your design lines and stakeout points laid over the actual ground and walk straight to them. CHCNAV's VPT™ (Virtual Pole Tip) keeps the target visible even when the pole is right at your feet — the point doesn't vanish under your hand the way it does on single-camera systems. For boundary corners, dense construction layout, or just checking you're on line, it's a genuinely faster way to work.
Underneath the camera is a serious GNSS receiver. The new StellaX chip tracks all constellations across 1,892 channels and holds a fixed RTK solution in the kind of obstructed, multi-side-blocked sites where lesser receivers drift to float. The 5th-generation Ultra-IMU gives you 3 cm tilt-compensated accuracy out to 60° with no initialization and no bubble — pick it up, lean it in, take the shot. It's immune to magnetic interference, so a rebar cage or a steel fence won't throw your tilt off.
Why surveyors choose the i76
- StellaX GNSS chip — 1,892 channels, all constellations, stable fixes in canopy and urban canyon
- Calibration-free tilt — 3 cm accuracy up to 60°, no init, no leveling, no magnetic drift
- Dual-camera visual + CAD AR stakeout — walk to points instead of reading numbers
- 8 mm + 1 ppm RTK, fix in under 10 seconds, > 99.9% reliability
- All-day power — up to 17 h RTK rover, 10 h visual stakeout, 22 h static
- Field-tough — IP68, IK08, 2 m pole-drop, sapphire lenses, −40 °C to +65 °C
- 450 g, palm-sized — 40% lighter than a standard rover, half the case volume
Built for real survey work
The i76 suits the full range of professional positioning: legal and cadastral surveys, boundary and property retracement, topographic and detail surveys, control networks, construction layout and stakeout, as-built verification, utility and asset locating, and GIS field data collection. With our own RTK correction network and NTRIP support, you can be fixed and collecting within minutes of stepping out of the truck — no base setup required on most jobs across our Alberta coverage.
Software
LandStar 8 Android field software (Visual Navigation + CAD AR Visual Stakeout) · CHC Geomatics Office (CGO) for static and PPK post-processing
Available from Latnet Technologies Ltd. — your authorized CHCNAV dealer in Canada. Straight technical advice, local support, training, rentals, and corrections-network access.
Technical Specification
CHCNAV i76 GNSS Receiver
Palm-Size Visual IMU-RTK GNSS Receiver
CHCNAV i76 – the full RTK rover that fits in your hand
If you’ve spent a day chasing points with a heavy receiver on a long pole, the CHCNAV i76 will feel like cheating. It’s a complete visual IMU-RTK GNSS rover — full-constellation positioning, calibration-free tilt, and a live camera view — built into a 450 g body about the size of your palm.
Two wide-angle cameras drive real-time CAD AR stakeout in LandStar, so you walk straight to your points instead of squinting at numbers — fast enough that new crew members keep up on day one.
Less weight on the pole, less fatigue by mid-afternoon, and a case that finally fits behind the truck seat.
Full-Constellation GNSS • Calibration-Free Tilt • Visual Stakeout
A complete RTK rover that fits in your hand
At just 450 g and Φ106 mm × 55.6 mm, the i76 is 50% smaller and 40% lighter than a standard receiver — without giving up GNSS performance, tilt compensation, or radio range. Visual stakeout and CAD AR run on a 4-core processor for smooth, one-pole point layout.
RTK Accuracy
8 mm + 1 ppm
Tilt Range
60°
Weight
450 g
Channels
1,892
Why It Stands Out
Built around the four things that actually slow surveyors down
Traditional RTK rovers tend to fall short in the same four places: unstable fixes in obstructed sites, slow and error-prone stakeout, fiddly IMU initialization, and bulky kits that are a chore to carry. The i76 was designed to fix all four.
- Stable fixes in obstructed sites — 100% fixed rate in CHCNAV’s three-sided building test
- Dual-camera visual stakeout cuts layout time and works for less-experienced crews
- Calibration-free, poke-and-measure tilt — no initialization or bubble centering
- 50% smaller, 40% lighter, with case volume cut in half
Key advantages
The i76 delivers practical field benefits for land surveyors, construction crews, and GIS teams working in real, complex environments.
CAD AR Visual Stakeout
Your design lines and points appear over a live camera view of the ground, so layout becomes “walk to the arrow” instead of reading offsets — cutting stakeout time on dense jobs by up to 40%.
5th-Gen Ultra-IMU
200 Hz calibration-free IMU, immune to magnetic interference, accurate within 3 cm at tilts up to 60° — with no initialization or leveling.
Dual Wide-Angle Cameras
Two 2 MP cameras with a 95° field of view and sapphire lenses feed the AR view and visual navigation, with smooth dual-camera switching.
Rugged & Compact
IP68 dust/water sealing, IK08 impact resistance, a 2-metre pole-drop rating, and scratch-proof sapphire lenses — in a 450 g body rated −40°C to +65°C.
All-Day Power
Up to 17 h as a UHF/4G RTK rover, 10 h with visual stakeout, and 22 h logging static — full recharge over USB-C in 4.5 hours.
StellaX GNSS Engine
Holds a fix where lesser receivers give up
The real test of a GNSS receiver isn’t open-sky accuracy — it’s whether it stays fixed when half the sky is gone. The StellaX engine tracks all constellations across the full frequency range and runs multiple solution engines that cross-check each other, so it keeps a reliable RTK fix in the obstructed, reflective, multi-side-blocked sites that push other rovers into float.
In CHCNAV’s three-sided building test the i76 stayed 100% fixed. The practical result is fewer re-shots and less time waiting for the solution to settle.
- All-constellation tracking on 1,892 channels
- ~15% accuracy gain in difficult signal conditions
- Resilient to ionospheric noise and multipath
- Stable, repeatable fixes under canopy and in urban canyon
Dual-Camera Visual Stakeout
Layout you can see, not just numbers you chase
Conventional stakeout is a loop of read-the-number, shuffle, re-read. The i76 replaces that with a live camera view in LandStar where your target points and CAD geometry sit overlaid on the real ground, with a clear arrow and live distance to the next point.
It works for single points, line work, and full CAD layout — and because the guidance is visual, a crew member who has never run a rover finds the point as fast as a veteran.
- Walk-to-the-arrow guidance with live distance to each point
- Far fewer interface switches on dense point sets
- Real CAD overlay on the ground — verify alignment as you go
- VPT™ (Virtual Pole Tip) keeps the point visible even with the pole at your feet
5th Generation Ultra-IMU
30% better tilt accuracy — poke and measure
Tilt compensation is only useful if you trust it. The i76’s 5th-generation IMU runs at 200 Hz, is fully calibration-free, and shrugs off magnetic interference — so a rebar cage, a steel fence, or a manhole lid won’t corrupt your reading.
Lean the pole up to 60° off vertical and the i76 holds horizontal accuracy to within about 3 cm. No spinning to initialize, no bubble to centre: pick it up, tip it in, take the shot.
- Calibration-free and immune to magnetic disturbance
- Works handheld, shoulder-mounted, or with the pole laid flat
- Additional pole-tilt uncertainty typically < 8 mm + 0.7 mm/° down to 30°
Ultra-Lightweight Design
50% smaller. 40% lighter. Half the case.
Every gram on the pole is a gram your arm carries all day. At 450 g and Φ106 mm × 55.6 mm, the i76 is roughly 40% lighter and 50% smaller than a standard rover, and the transport case shrinks by about half.
The payoff isn’t a spec-sheet boast — it’s a lighter pole at hour seven, a kit that rides behind the seat instead of in the bed, and one less thing to wrestle on a long traverse.
Built for real survey work
The i76 covers the full range of professional positioning. With NTRIP support and access to our own RTK correction network, you’re fixed and collecting within minutes of leaving the truck across our Alberta coverage — no base setup required on most jobs.
Legal & Cadastral Surveys
Boundary retracement, property corners, and monument recovery — with tilt to reach points a level pole can’t.
Topographic & Detail
Fast topo and feature pickup with codes and line work, plus control surveys and as-built verification.
Construction Layout
CAD AR stakeout for grade, alignment, foundations, and dense layout straight from the design file.
Utility & GIS Mapping
Asset locating, utility mapping, and GIS field data collection with reliable fixes in built-up corridors.
Why the visual stakeout actually works on the i76
Plenty of receivers claim a camera. The difference is the hardware behind it. A faster processor, faster Wi-Fi, a true virtual pole tip, and a real GNSS-grade IMU are what make visual stakeout smooth and accurate instead of a gimmick.
- 4-core, 1.5 GHz CPU drives quick dual-camera start and seamless switching, where many rivals run a single 800 MHz core.
- 5 GHz Wi-Fi for image transfer — markedly faster than 2.4 GHz-only designs that can stutter and miss points.
- True VPT™ (Virtual Pole Tip) keeps the staking point visible and accurate — not hidden behind your hand.
- GNSS-grade IMU + dual front cameras for stable, precise visual navigation rather than handheld gyroscope guesswork.
CHCNAV i76 technical specifications
| GNSS channels | 1,892 channels |
|---|---|
| Constellations | GPS, GLONASS, Galileo, BeiDou (incl. B1C/B2a/B2b), QZSS, NavIC/IRNSS, SBAS (EGNOS L1/L5); PPP B2b-PPP, E6B-HAS |
| RTK accuracy | H: 8 mm + 1 ppm RMS · V: 15 mm + 1 ppm RMS · Init < 10 s · Reliability > 99.9% |
| PPK accuracy | H: 3 mm + 1 ppm RMS · V: 5 mm + 1 ppm RMS |
| Static (high-precision) | H: 2.5 mm + 0.1 ppm RMS · V: 3.5 mm + 0.4 ppm RMS |
| PPP | Support B2b-PPP, E6B-HAS · H: 10 cm · V: 20 cm |
| IMU | Calibration-free, 200 Hz AUTO-IMU · tilt 0–60° · immune to magnetic disturbance · additional uncertainty typ. < 8 mm + 0.7 mm/° to 30° |
| Positioning rate | 1 Hz, 5 Hz, 10 Hz |
| Time to first fix | Cold start < 45 s · Hot start < 10 s · Re-acquisition < 1 s |
| Cameras | Dual 2 MP, 95° ± 3° FOV, F2.4 aperture, 30 fps, sapphire lens |
| UHF radio | Internal Tx/Rx 410–470 MHz · 0.5 W / 1 W · CHC, Transparent, TT450 · range typ. 3 km (up to 5 km) |
| Communication | Bluetooth 5.4 BDR/EDR · Wi-Fi 2.4 GHz 802.11g & 5 GHz 802.11ac · NFC pairing |
| Data formats | RTCM 2.x / 3.x, CMR I/O · HCN, RINEX 2.11 / 3.02 · NMEA 0183 · NTRIP Client & Caster |
| Ports & storage | 1 × USB Type-C (power / data / OTG firmware) · 1 × UHF antenna (SMA female) · 8 GB storage |
| Battery & power | 7.2 V / 4900 mAh internal · UHF/4G rover up to 17 h · visual stakeout up to 10 h · static up to 22 h · USB-C 5 V/2 A, full charge 4.5 h |
| Size & weight | Φ106 mm × 55.6 mm (Φ4.17 in × 2.1 in) · 450 g (0.99 lb) |
| Environmental | IP68 · IK08 · 2 m pole-drop · operating −40°C to +65°C · storage −40°C to +85°C |
| Field software | LandStar 8 (Android) — Visual Navigation, CAD AR Visual Stakeout |
Specifications from CHCNAV i76 documentation and subject to change without notice. Some signals/features delivered via firmware upgrade.
i76 FAQ
What is the CHCNAV i76 used for?
The i76 is a palm-size visual IMU-RTK GNSS receiver for surveying, construction, and mapping — legal and cadastral surveys, boundary and topographic work, construction layout and stakeout, control and as-built surveys, utility and asset mapping, and GIS field data collection. Its dual-camera CAD AR visual stakeout makes one-pole point layout fast and intuitive, including for less-experienced crews.
How does the visual stakeout work?
Two wide-angle cameras feed a live augmented-reality view in LandStar that overlays your target points, arrow guidance, and CAD geometry on a real camera image of the ground in front of you. CHCNAV’s VPT™ (Virtual Pole Tip) keeps the staking point in view even when the pole is right at your feet, so your hand never hides it. It works for single points, line work, and full CAD layout, and can cut stakeout time on dense jobs by up to 40%.
Does the i76 need IMU initialization or leveling?
No. The 5th-generation Ultra-IMU is calibration-free and immune to magnetic disturbance — it’s poke-and-measure. There’s no manual initialization or bubble centering, and it works handheld, shoulder-mounted, or with the pole laid flat, holding accuracy within 3 cm at tilts up to 60°.
How accurate is the i76?
RTK accuracy is 8 mm + 1 ppm horizontal and 15 mm + 1 ppm vertical, with initialization under 10 seconds and reliability above 99.9%. PPK is 3 mm + 1 ppm horizontal / 5 mm + 1 ppm vertical, and high-precision static reaches 2.5 mm + 0.1 ppm horizontal. Accuracy figures assume open sky, good geometry, and recommended GNSS practice.
How long does the battery last?
The internal 7.2 V / 4900 mAh battery runs up to 17 hours as a UHF/4G RTK rover (without the camera), about 10 hours with visual stakeout active, and up to 22 hours logging static data. A full recharge over USB-C (5 V / 2 A) takes about 4.5 hours. Runtime varies with temperature and battery cycle life.
Is the i76 rugged enough for tough sites?
Yes. It carries an IP68 dust and water rating, IK08 impact protection, and survives a 2-metre pole-drop, with scratch-proof sapphire camera lenses. The operating range runs from −40°C to +65°C, so it holds up through Canadian winters and demanding field conditions.
What software does the i76 use?
The i76 runs with CHCNAV LandStar 8 on Android, which adds Visual Navigation and CAD AR Visual Stakeout. LandStar 8.2 also brings faster project search, import/export compatibility with Trimble, Leica, and Topcon files, flexible data filtering, a faster Tree Survey workflow, on-site grids, configurable labels, and CAD transparency control. For post-processing, CHC Geomatics Office (CGO) handles logged static and PPK data.
Can the i76 work as both a base and a rover?
Yes. The receiver supports base (Tx) and rover (Rx) operation with an internal 410–470 MHz UHF radio (0.5 W / 1 W, typical 3 km range, up to 5 km in optimal conditions). Base and rover kits — including a DL8 external datalink option for longer-range base setups — are available; ask Latnet which configuration fits your workflow.
How is the i76 supported in Canada?
Latnet Technologies is an authorized CHCNAV dealer in Canada, providing local support, training, rentals, and workflow guidance for the i76 and the wider CHCNAV ecosystem — plus access to our own RTK correction network with expanding Alberta coverage.
Configure your CHCNAV i76 with Latnet Technologies
Latnet Technologies is an authorized CHCNAV dealer in Canada, providing local support, training, rentals, corrections-network access, and straight technical advice for the i76 and the wider CHCNAV GNSS ecosystem.
CHCNAV i76 Palm-Size Visual RTK Receiver
All-in-One GNSS, IMU & Dual-Camera Stakeout
The CHCNAV i76 is a 450 g visual IMU-RTK GNSS receiver that brings full-constellation positioning, calibration-free tilt to 60°, and live CAD AR stakeout into one palm-sized tool. Walk straight to your points instead of reading numbers — faster layout, less fatigue, and reliable fixes even in tight, obstructed sites. See it in action below.
