Audited Supplier
CHC 1408 channels GNSS IMU RTK i73+ with Best-in-class Signal Tracking
The i73+ GNSS is an extremely compact, powerful and versatile GNSS receiver with an 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. In addition, 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 various job sites configurations, making intensive field surveys more convenient and less tiring for the operator.
Model | i73 |
GNSS Performance | |
Channels | 1408 channels |
GPS | L1C, A, L2C, L2P(Y), L5 |
GLONASS | L1, L2 |
Galileo | E1, E5a, E5b, E6 |
BeiDou | B1I, B2I, B3I, B1C, B2a, B2b |
QZSS | L1, L2, L5, L6 |
PPP | B2b-PPP |
SBAS | L1, L5 |
GNSS Accuracies | |
Real time kinematics (RTK) | Horizontal: 8 mm + 1 ppm RMS |
Vertical: 15 mm + 1 ppm RMS | |
Initialization time: < 10s | |
Initialization reliability: >99.9% | |
Post-processing kinematics (PPK) | Horizontal: 3 mm + 1 ppm RMS |
Vertical: 5 mm + 1 ppm RMS | |
Post-processing static | Horizontal: 2.5 mm + 0.5 ppm RMS |
Vertical: 5 mm + 0.5 ppm RMS | |
Code differential | Horizontal: 0.4 m RMS |
Vertical: 0.8 m RMS | |
Autonomous | Horizontal: 1 m RMS |
Vertical: 1.5 m RMS | |
Positioning rate | 1 Hz, 5 Hz and 10 Hz |
Time to first fix | Cold start: < 45 s |
Hot start: < 10 s | |
Signal re-acquisition: < 2 s | |
IMU update rate | 200Hz |
Tilt angle | 0~60° |
RTK tilt -compensated | Additional horizontal pole-tilt uncertainty typically less than 10 mm + 0.7 mm/° tilt |
Hardware | |
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 |
Environment | Operating: -40°C to +65°C (-40°F to +149°F) |
Storage: -40°C to +85°C (-40°F to +185°F) | |
Humidity | 100% condensation |
Ingress protection | IP67 waterproof and dustproof, protected from temporary immersion to depth of 1 m |
Shock | Survive a 2-meter pole drop |
Tilt sensor | Calibration-free IMU for pole-tilt compensation. Immune to magnetic disturbances. |
E-Bubble leveling | |
Communication | |
Wi-Fi | 802.11 b/g/n, access point mode |
Bluetooth® | V 4.2 |
Ports | 1 x USB Type-C port (external power, data download, firmware update) 1 x UHF antenna port (TNC female) |
UHF radio | Standard Internal Rx/Tx: 410 - 470 MHz Transmit Power: 0.5 W ,1 W Protocol: CHC, Transparent, TT450, Satel Link rate: 9,600 bps to 19,200 bps Range: Typical 3 km to 5 km, up to 8 km with optimal conditions |
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 |
Data storage | 8 GB internal memory |
Electrical | |
Power consumption | Typical 2.2 W (depending on user settings) |
Li-ion battery capacity | Built-in non-removable battery 6,800 mAh, 7.4 V |
Operating time on internal battery | RTK Rover: up to 24 h UHF RTK Base: up to 10.5 h Static: up to 25 h |
Certifications | |
CE Mark; FCC Part 15 Subpart B Class B; NGS Antenna Calibration | |
Jiangsu Bangjie Trading Co., Ltd. is a comprehensive trading company whose main business is surveying instruments, building materials and international trade. The company was registered in Nanjing, Jiangsu Province, the only megacity in the Yangtze River Delta. The company combined domestic sales with international trade earlier and was always guided by customer needs.
The company currently has three departments: surveying instrument department, building materials department and international trade department. We have a group of professionals who have been engaged in related industries for many years. We can provide you with more authoritative and convenient pre-sale consultation, sales cooperation, after-sales coordination and guidance, and provide comprehensive services.
At present, the company's main surveying instruments are: total station, GPS RTK, UAV, theodolite,plummet,auto level,laser rangefinder and surveying accessories.
2.Combined domestic sales with international trade earlier and was always quided by customer needs.
3.Provide more authoritative and convenient pre-sale consultation, sales cooperation, after-sales coordination and guidance, and provide comprehensive services.
4.All products will have been strictly quality checked in factory before sending out and all products have one year warranty.
What's your payment method ?
We accept T/T in advance, L/C at sight, Western Union, Moneygram, Paypal, Secure Payment(Alibaba) and Credit Card.
How can you guarantee the safety of my funds?
Trust is always a big problem for international trade, we believe good business credit and
reputation is the most important for businessman. We recommend Trade Assurance service by Alibaba Group. We won't get the fund unless you get the product and confirm the payment.
What Countries do you ship to?
We ship goods to almost all countries by express, air or sea. And we will inform you if we can't ship to your country.
Are your products in stock?
Most items are usually in stock. It all depends on promotions we run, demand at manufacturers and suppliers. Most delivery will be made within 3 working days after payment confirmed.
Do you sell used surveying equipment?
We do not sell any used equipment. Everything we sell is brand new. For some equipment we may need to test or check the language before delivery.
Do you have other items that are not displayed on your website?
Yes, we have other items that we do not display on our website. Please contact us and let us know what you are looking for as long as its surveying related.
