CHCNAV i73+ Compact GNSS Receiver for Maximum Flexibility

Ultra-compact and lightweight survey-grade GNSS receiver weighing just ~0.73 kg.
Tracks full GNSS constellations via 1408 channels for robust positioning.
Built-in IMU enabling automatic pole-tilt compensation (up to ~60°) for improved field efficiency.
Integrated UHF Tx/Rx modem (410-470 MHz) allowing use as base or rover.
Durable, field-ready design: IP67 rating, magnesium-alloy body, capable of very low and high temperature operation.
Long battery life: up to ~24 hours in RTK rover mode.

Description

CHCNAV i73+

Compact GNSS Receiver for Maximum Flexibility

Category	Specification
Model	CHCNAV i73+
GNSS Channels	1408-channel full GNSS (GPS, GLONASS, Galileo, BeiDou, QZSS)
IMU Update Rate	200 Hz
Tilt Compensation	Supports pole-tilt compensation up to ~60° with very small additional uncertainty.
RTK Precision	(Example source) Horizontal ~8 mm + 1 ppm RMS, Vertical ~15 mm + 1 ppm RMS.
Time to First Fix	Cold start < 45 s; Hot start < 10 s; signal re-acquisition < 2 s.
Weight	~0.73 kg with battery.
Dimensions	119 × 85 mm (or similar compact form factor)
Battery capacity & life	Built-in ~6,800 mAh battery; up to ~24 h in RTK rover mode.
Built-in Memory	8 GB internal memory.
Wireless Connectivity	Wi-Fi 802.11 b/g/n; Bluetooth 4.x; NFC.
UHF Modem	Integrated Tx/Rx 410-470 MHz (0.5-1 W typical) for range up to several km.
Ports	USB-Type C for data/firmware/power; UHF antenna port (TNC) etc.
Environmental Rating	IP67 dust/water proof; Operating temp approx –40°C to +65°C.
Housing	Magnesium alloy body for lightweight and rugged durability.
Data Formats	RTCM 2.x/3.x, CMR, HCN, HRC, RINEX 2.11/3.02, NMEA 0183; NTRIP client/caster.

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Highlights

The CHCNAV i73+ GNSS receiver is a powerful, compact solution designed for maximum field flexibility. Featuring a built-in UHF modem, it seamlessly operates as both a base station and a rover, giving surveyors complete freedom in any environment.

With advanced automatic pole tilt compensation, the i73+ increases point measurement efficiency by up to 20% and boosts stakeout productivity by 30%, allowing faster, more accurate fieldwork without extra effort.

Weighing just 0.73 kg, this lightweight, portable GNSS receiver minimizes operator fatigue and enhances comfort during long surveying sessions. Whether working on rugged terrain or urban job sites, the i73+ GNSS adapts effortlessly, delivering precision, speed, and reliability in every survey.