CHCNAV i89 Advanced IMU-RTK with Visual Surveying

Pocket-sized Visual IMU-RTK GNSS with 1408 channels for robust RTK in tough sites.
Dual cameras + video photogrammetry to capture survey-grade 3D points where GNSS is obstructed.
Auto-IMU (200 Hz) with 60° tilt and ~3 cm accuracy for faster shots—no manual initialization.
Up to 16.5 h rover runtime; 18 W fast charge to full in ~3 h.
IP68 dust/water protection; survives 2 m pole drop; only 750 g.
Built-in UHF (410–470 MHz), Bluetooth® 4.2, Wi-Fi 2.4/5.8 GHz, NFC touch-pairing.

Price on request

Trusted dealerDirect manufacturer partnership
Pan-India deliveryInsured shipping, all states
Post-sale supportTraining + service included

Overview

What makes it work

Category	Spec
GNSS channels	1408 channels with iStar 2.0 hybrid engine
Constellations	GPS L1C/A, L2C, L2P(Y), L5; Galileo E1/E5a/E5b/E6; GLONASS L1/L2/L3; BeiDou B1I/B2I/B3I/B1C/B2a/B2b; QZSS L1C/A/L1C/L2C/L5; NavIC L5; SBAS L1/L5
RTK accuracy	H: 8 mm + 1 ppm; V: 15 mm + 1 ppm; init <10 s; reliability >99.9%
Static & rapid static	H: 2.5 mm + 0.5 ppm; V: 5 mm + 0.5 ppm
High-precision static	H: 2.5 mm + 0.1 ppm; V: 3.5 mm + 0.4 ppm
PPK / Code diff / PPP	PPK supported; Code diff H: 0.4 m / V: 0.8 m; PPP supports B2b-PPP & Galileo E6B-HAS
Time to first fix	Cold <45 s; Hot <10 s; Re-acquisition <1 s
Positioning rate	1 Hz, 5 Hz and 10 Hz (per datasheet)
Visual surveying	Typical 2–4 cm accuracy, range 2–15 m
IMU (tilt)	200 Hz Auto-IMU, 0–60°; additional horiz. uncertainty typically < 8 mm + 0.7 mm/° to 30°; ~3 cm accuracy over 60°
Cameras	Dual global-shutter 2 MP + 5 MP, 75° FOV; 25 fps; panoramic capture; typical 60 MB per 60 s group
AR/visual features	Visual Survey, Visual Stakeout, Visual Navigation; VPT™ (Virtual Pole Tip) in LandStar
Wireless	Bluetooth® 4.2, Wi-Fi 802.11 b/g/n/ac (2.4 & 5.8 GHz), NFC
UHF radio	Tx/Rx 410–470 MHz, 0.5 W/1 W; protocols: CHC, Transparent, TT450, Satel; typical 3 km (up to 8 km optimal)
Data formats	RTCM 2.x/3.x, CMR I/O; RINEX 2.11/3.02; NMEA 0183 out; NTRIP Client/Caster
Storage & ports	8 GB internal; USB-C (power/data/fw); TNC UHF antenna port
Battery & power	7.2 V/4900 mAh internal; up to 16.5 h rover (w/o camera), up to 9.5 h visual survey; up to 10 h UHF base; up to 22 h static; 18 W quick charge (~3 h to full)
Ruggedness	IP68, 100% RH non-condensing, 2 m pole drop; vibration per ISO 9022-36-08 & MIL-STD-810H
Size & weight	Ø133 × 87 mm, 750 g
Operating temp	−40 °C to +65 °C; storage −40 °C to +85 °C

The powerful 1408 Module GNSS, model 189 is small and strong for surveying. It gives reliable RTK Performance in tough conditions also. It doesn’t matter how erratic the solar activity gets, RTK fixes remain dependable thanks to its intelligent ionospheric modeling. Additionally, the i89 is the best option for completing surveying tasks efficiently and comfortably throughout the day due to its featherlight 750 g design and remarkable 16.5-hour battery life.