Multi-Constellation Tracking
Tracks GPS L1 (1575.42 MHz) and L5 (1176.45 MHz), BeiDou (1561.098 MHz) and GLONASS (1602.5625 MHz), with IRNSS available on manual selection for regional redundancy.
Multi-Constellation · GNSS / DGNSS / RTK
GNSS Receiver with IRNSS
T-GNSS-R-300 Compact High-Precision Multi-Constellation GNSS Receiver
GNSS Receiver with IRNSS is a dual-band marine positioning system built for professional mariners who need dependable navigation data in demanding offshore conditions. The T-GNSS-R-300 tracks GPS L1 and L5, BeiDou and GLONASS constellations, with IRNSS support that can be manually selected when regional coverage matters. Paired with a 7-inch touch Control & Display Unit and dual RS-422 outputs, it delivers sub-meter accuracy with cold starts in 24 seconds flat.
Sub-meter accuracy (<1 m)
Dual-band GPS L1 + L5 tracking
IRNSS manually selectable
24-second cold start
7-inch LCD touch display
Dual RS-422 (NMEA 0183) output
IP65/IP67 rated components
GNSS, DGNSS & RTK positioning
Key Features
Built for Precision Where It Matters Most
Marine environments punish positioning equipment with salt exposure, vibration and signal interference. The T-GNSS-R-300 is engineered around that reality, not around a lab bench, so every output reaching your bridge or deck system is one you can trust.
Centimeter-Level RTK Accuracy
Standard positioning delivers under 1 m accuracy; switching to RTK mode (via external correction or L-Band satellite) brings you down to centimeter-level precision for survey-grade work.
Rapid Signal Acquisition
Cold starts lock in 24 seconds, hot starts in just 1 second, so you're back on precise position the moment power or signal is restored.
Integrated Touch Control
The 7-inch Control & Display Unit combines display and input into a single unit, eliminating separate buttons and simplifying operation at the helm.
Dual RS-422 Output
Two independent RS-422 ports distribute NMEA 0183 packets (RMC, GGA, GLL, ZDA and more) to multiple downstream systems simultaneously.
Marine-Grade Protection
GNSS Receiver and CDU rated IP65; GNSS Antenna rated IP67, built to operate from −40°C to +85°C.
Where marine positioning matters
One Fix, Four Marine Operations
A single position fix leaves the satellite constellation, locks into the T-GNSS-R-300, and fans out to the marine operations that depend on it.
T-GNSS-R-300
GNSS · DGNSS · RTK · Locked
- Navigation
- Survey
- Offshore
- RTK
Marine Navigation
Sub-meter positioning
Sub-meter position, velocity and time on the 7-inch bridge display, with dual-band GPS L1 + L5 tracking.
How GNSS with IRNSS works
From Satellite Signal to Bridge Display, in Seconds
The T-GNSS-R-300 system moves position data through three stages, each engineered for reliability at sea.
- 01Receive
The GNSS Antenna, supplied with a 50-meter bonded-aluminum-foil-shielded coaxial cable, pulls in signals across GPS, BeiDou, GLONASS and IRNSS bands at 38 dBm gain.
- 02Process
The receiver resolves position, velocity and time using GNSS, DGNSS or RTK modes, achieving tracking sensitivity down to −167 dBm.
- 03Distribute
Position data is formatted as user-selectable NMEA 0183 packets and pushed out over dual RS-422 ports at a configurable 115200 bps, with navigation update rates up to 25 Hz.
GPSBeiDouGLONASSIRNSS
GNSS
signals
T-GNSS-R-300
GPS L1 + L5 · < 1 m
RS-422 ARS-422 BNMEA 01837-inch CDU
Applications
Built for Professional Marine Operations
Sertel's navigation systems are deployed by professional mariners who need positioning data they can act on without second-guessing it.
Marine Navigation
Maritime Survey
Offshore Operations
Precision Positioning (RTK)
Technical Specifications
Complete electrical, RF and protocol details for the T-GNSS-R-300 GNSS Receiver with IRNSS.
Receiver
| Parameter | Specification |
|---|---|
| Model | T-GNSS-R-300 |
| Receiver Type | L1 + L5 with IRNSS, manually selectable dual-band GNSS receiver |
| Frequency Bands | 1575.42 MHz GPS L1 · 1176.45 MHz GPS L5 · 1561.098 MHz BeiDou · 1602.5625 MHz GLONASS |
| Accuracy | < 1 m |
| Velocity Accuracy | < 0.1 m/s |
| Navigation Update Rate | 1–25 Hz |
| Cold Start | 24 sec |
| Hot Start | 1 sec |
| Tracking Sensitivity | −167 dBm |
| Hot Start Sensitivity | −163 dBm |
| Cold Start Sensitivity | −149 dBm |
| Positioning Modes | GNSS, DGNSS, RTK |
FAQ
Frequently Asked Questions
Ready to Deploy Precision GNSS Positioning?
Talk to a Sertel engineer for a tailored configuration, datasheet and pricing for the GNSS Receiver with IRNSS.