CHCNAV i89

  • 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.

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Description

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

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