CHCNAV i83 IMU-RTK GNSS

Vendor: CHCNAV Type: GNSS Receivers

The CHCNAV i83 is an IMU-RTK GNSS receiver with tilt compensation, letting surveyors measure points quickly without levelling the pole. Rugged and reliable, it delivers dependable centimetre accuracy across survey, setting-out and mapping work. Supplied and supported in the UK by Tri-Site Survey Equipment.

£7,205.00

Options: With HCE620 Data Controller

With HCE620 Data Controller With LT800 Data Controller Without A Data Controller

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Product Features

Smarter Connectivity Than Ever

Built-in Wi-Fi, Bluetooth and NFC connect seamlessly to field controllers and tablets, while integrated 4G and UHF modems enable every survey mode — from NTRIP network RTK to UHF base-rover. Corrections are accessed or broad

Engineered for Field Use

An ultra-low-power SoC and smart power management deliver up to 34 hours as a network rover and 16 hours as a base, with no external batteries needed. Charging from a power bank or USB-C and a shock-, dust- and waterproof magnesium alloy body ensure uninterrupted performance anywhere.

GNSS Survey Tool for All

The built-in IMU makes automatic pole-tilt compensation easy, boosting speed and efficiency by up to 30%. Interference-free 200Hz initialisation in 5 seconds and 3cm accuracy across a 30° tilt range make measuring and stakeout fast and productive — for engineers, site foremen and surveyors alike.

Beyond GNSS RTK Survey

The i83 smart antenna delivers centimetre precision in seconds and holds reliable fixed RTK even in challenging environments. A third-generation high-gain antenna lifts satellite tracking by up to 30% across all constellations, with iStar technology ensuring optimal RTK surveying in every application.

Detailed Specifications

A Universal RTK Survey Tool

The i83 is a universal 1,408-channel multi-band IMU-RTK GNSS receiver built to be the survey tool any surveying, construction or mapping professional expects. Built-in Wi-Fi, Bluetooth, NFC, UHF and 4G connectivity work reliably and conveniently across a wide range of scenarios, adapting to any job-site configuration.

30% Better Signal Tracking

A third-generation high-gain GNSS antenna combined with the latest iStar algorithm increases GNSS signal tracking efficiency by up to 30%, delivering survey-grade positioning across GPS, GLONASS, BeiDou, Galileo and QZSS. A quick-start feature gets you up and running within 30 seconds of power-up for faster point collection.

Effortless Tilt Compensation

A premium calibration-free IMU provides automatic pole-tilt compensation, boosting surveying, engineering and mapping efficiency by up to 30%. Real-time, interference-free initialisation of the 200Hz inertial module takes just 5 seconds and holds 3cm accuracy over a 30° pole-tilt range — no bubble centring required.

All-Day Endurance, Rugged Build

An ultra-low-power SoC design with smart power management delivers up to 34 hours of continuous RTK rover operation and up to 16 hours as a base, eliminating the need for spare batteries. Charging works from a power bank or standard USB-C, and the magnesium alloy body is shock-, dust- and waterproof for the most demanding sites.

GNSS Accuracies (RMS)

RTK: H: 8mm + 1ppm / V: 15mm + 1ppm; initialisation <10s, reliability >99.9%
PPK: H: 3mm + 1ppm / V: 5mm + 1ppm
PPP: B2b-PPP, E6B-HAS; H: 10cm / V: 20cm
High-Precision Static: H: 2.5mm + 0.1ppm / V: 3.5mm + 0.4ppm
Static & Rapid Static: H: 2.5mm + 0.5ppm / V: 5mm + 0.5ppm
Code Differential: H: 0.4m / V: 0.8m
Autonomous: H: 1.5m / V: 2.5m
Positioning Rate: 1Hz, 5Hz, 10Hz
Time to First Fix: Cold start <45s; Hot start <10s; re-acquisition <1s

IMU & Tilt

IMU Update Rate: 200Hz, AUTO-IMU
Tilt Angle: 0–60°
RTK Tilt-Compensated: Additional horizontal uncertainty typically <8mm + 0.7mm/° tilt down to 30°
Tilt Sensor: Calibration-free IMU, immune to magnetic disturbance, E-Bubble levelling

Hardware

Size: Ø152mm × 78mm
Weight: 1.15kg (2.54 lb)
Front Panel: 1.1" OLED colour display, 2 LEDs, 2 physical buttons
Data Storage: 8GB internal memory

Communication

Wireless Pairing: NFC touch pairing
Wi-Fi: 802.11 a/b/g/n/ac, access point mode
Bluetooth: 5.0 and 4.2 + EDR, backward compatible
Network Modem: Integrated 4G — LTE (FDD) B1/B2/B3/B4/B5/B7/B8/B20; DC-HSPA+/HSPA/UMTS B1/B2/B5/B8; EDGE/GPRS/GSM 850/900/1800/1900MHz (Nano-SIM)
UHF Radio: 410–470MHz, 0.5W–2W; protocols CHC/Transparent/TT450/Satel; range typical 3–5km (up to 15km optimal)
Ports: 1× 7-pin LEMO (RS-232); 1× USB Type-C; 1× UHF antenna (TNC female)
Data Formats: RTCM 2.x, RTCM 3.x, CMR I/O; HCN, RINEX 2.11/3.02; NMEA 0183; NTRIP Client/Caster

Electrical

Battery: Built-in non-removable 9,900mAh, 7.2V Li-ion
Power Consumption: Typical 2.8W (depending on settings)
Operating Time: UHF/4G RTK rover up to 34h; UHF RTK Base up to 16h; Static up to 36h
External Power Input: 9V DC to 28V DC

Environment

Operating Temperature: -40°C to +65°C
Storage Temperature: -40°C to +85°C
Humidity: 100% condensation
Ingress Protection: IP67 (temporary immersion to 1m)
Shock: Survives 2m pole-drop
Certifications: CE; FCC Part 15 Subpart B Class B; NGS Antenna Calibration; MIL-STD-810H method 514.8

Software

LandStar: GNSS survey, stakeout, base/rover configuration

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CHCNAV i83 Datasheet PDF ↓

CHCNAV i83 IMU-RTK GNSS