Navigating the world of GNSS technology can be overwhelming, especially with so many models offering different features and capabilities. To help simplify your decision-making process, We’ve put together a clear and concise comparison chart of CHCNAV’s most popular GNSS receivers. Whether you're focused on precision, connectivity, ruggedness, or budget, this chart highlights the key specs and differences to guide you toward the best fit for your surveying or geospatial needs.

CHCNAV Model	i73+	i76	i83	i89	i93

Internal radio antenna	Yes	No	Yes	Yes	Yes
Built-in UHF radio range	1W Rx/Tx Range:Typical 3 km, up to 8 km with optimal conditions	Rover only	2W Rx/Tx Range: Typical 3 km to 5 km, up to 15km with optimal conditions	1W Rx/Tx Range: Typical 3 km, up to 8 km with optimal conditions	2W Rx/Tx Range: Typical 3 km to 5 km, up to 15km with optimal conditions
Built-in UHF radio protocols	1W Rx/Tx: 410 - 470 MHz Protocol: CHC, Transparent, TT450, Satel	Rx Only: 410 - 470 MHz Protocol: CHC, Transparent, TT450, Satel	Rx/Tx: 410 - 470 MHz Transmit Power: 0.5 W to 2 W Protocol: CHC, Transparent, TT450, Satel	Tx/Rx: 410 - 470 MHz Transmit Power: 0.5 W, 1 W Protocol: CHC, Transparent, TT450, Satel	Rx/Tx: 410 - 470 MHz Transmit Power: 0.5 W to 2 W Protocol: CHC, Transparent, TT450, Satel
IP Rating	IP67	IP67	IP67	IP67	IP67
Accuracy in RTK Mode	H: 8mm V: 15mm	H: 8mm V: 15mm	H: 8mm V: 15mm	H: 8mm V: 15mm	H: 8mm V: 15mm
AUTO-IMU	Yes	Yes	Yes	Yes	Yes
Tilt Angle	0-60 degree	0-60 degree	0-60 degree	0-60 degree	0-60 degree
RTK tilt-compensation	8mm + 0.7mm/degree tilt	8mm + 0.7mm/degree tilt	8mm + 0.7mm/degree tilt	8mm + 0.7mm/degree tilt	8mm + 0.7mm/degree tilt
Visual Stakeout	N/A	Yes	N/A	Yes	Yes
Operating time on internal battery (5)	RTK Rover: up to 24 h UHF RTK Base: up to 10.5 h Static: up to 25 h	UHF/ 4G RTK Rover w/o camera: up to 17 h Visual Stakeout: up to 10 h	UHF/4G RTK Rover: up to 34h UHF RTK Base: up to 16h Static: up to 36h	UHF/4G RTK Rover w/o camera: up to 16.5 h Visual Stakeout/Visual Survey: up to 9.5 h UHF RTK Base: up to 10 h Static: up to 22 h	UHF/4G RTK Rover w/o camera: up to 34h Visual Stakeout/Visual Survey: up to 24h