CHCNAV i73
POCKET IMU-RTK UHF BASE + ROVER

Product Features
The i73+ GNSS is an extremely compact, powerful and versatile GNSS receiver with integrated UHF Tx/Rx modem which can be used either as a base station or as a rover. Powered by CHCNAV iStar technology that optimally tracks satellite signals from all constellations, the i73+ GNSS achieves survey-grade, fixed RTK centimeter positioning within 30 seconds after power-up. Its automatic pole tilt compensation increases the efficiency of point measurements by up to 20% and stakeout surveys by up to 30%. Easy to carry in one hand, the i73+ GNSS is an effective, lightweight GNSS solution that adapts to a variety of jobsite configurations, making intensive field surveys more convenient and also less tiring for the operator.
- Real time kinematics (RTK)
- Post-processing kinematics (PPK)
- 1408 Channels
- Ingress protection IP67
CHCNAV i73
Features CHCNAV i73
The i73 GNSS smart antenna delivers centimeter precision in seconds and maintains reliable fixed RTK accuracy even in typically challenging environments.
Survey anywhere with its built-in interference-free IMU. Even in a complex electromagnetic environment, the i73+ initializes its IMU in 3 seconds, with no need for repeated re-initialization. It delivers 3 cm accuracy up to a 30-degree pole tilt, increasing the efficiency of point measurement by 20% and stakeout by 30%. The i73+ GNSS eliminates the challenge of measuring hidden or dangerous points while making the work of survey crews safer and more efficient. GNSS surveys are made easier by removing the need for the operator to focus on perfect leveling of its surveying pole.
Standard Internal Rx/Tx: 410 - 470 MHz, Transmit Power: 0.5 Wto2 W, UHF radio Protocol: Transparent, TT450, Satel, Link rate: 9600 bps to 19200 bps, Range: Typical 3 km to 5 km
Full GNSS with 1408 channels advanced tracking The integrated advanced 1408-channel GNSS technology takes advantage of GPS, Glonass,Galileo and BeiDou, in particular the latest BeiDou III signal, and provides robust data quality at alltimes. The i73+ extends GNSS surveying capabilities while maintaining centimeter-level survey-grade accuracy. GNSS surveying has never been more efficient.
Integrated 4G modem, LTE (FDD):B1,B2,B3,B4,B5B7,B8 B20 Network modem DC-HSPA+/HSP A+/HSPA/UMTS: B1,B2, BS, BS EDGE/GPRS/GSM850/900/1800/1900MHz
The i83 GNSS ultra-low power SoC (System-on-Chip) electronic design and smart power management dramatically improve GNSS survey time span and eliminate the need for spare or external batteries. Up to 34 hours of autonomous work are achieved when operated as a GNSS RTK network rover and up to 16 hours as a RTK base station.

Detail Parameters
more detail about CHCNAV i73 parameters
Channels
1408 channels
GPS
L1 C/A, L2C, L2P, L5
GLONASS
L1, L2
Galileo
E1, E5a, E5b, E6*
BeiDou
B1I, B2I, B3I, B1C, B2a, B2b*
SBAS
L1, L5
QZSS
L1, L2, L5, L6*
IRNSS
L5
IMU
update rate 200 Hz
Size (L x W x H)
119 mm x 119 mm x 85 mm (4.7 in × 4.7 in x 3.3 in)
Weight
0.73 kg (1.60 lb)
Front panel
4 LED, 2 physical buttons
Ingress protection
IP67
Wi-Fi
802.11 b/g/n, access point mode
Bluetooth®
V4.2
Data storage
8 GB internal memory
Data formats
RTCM 2.x, RTCM 3.x, CMR input / output HCN, HRC, RINEX 2.11, 3.02 NMEA 0183 output NTRIP Client, NTRIP Caster