Arrow 300+ GNSS receiver product feature image

Arrow 300+™ RTK GNSS Receiver

Triple-Frequency, Multi-Constellation GNSS Receiver

Powerful Survey-Grade GNSS Receiver Offering RTK Precision

The Arrow 300+™ is a powerful, device-agnostic, survey-grade receiver supporting all major GNSS constellations (e.g., GPS, GLONASS, Galileo, BeiDou, QZSS, IRNSS) and triple-frequency tracking for faster, high-performance fixes. With compatibility across RTK networks, CORS, base stations, SBAS, and optional Atlas® subscriptions, the Arrow 300+ delivers extreme survey-grade accuracy in real time, anywhere in the world. Even when your RTK connection drops, the Arrow 300+ keeps you working with proprietary SafeRTK®, allowing you to stay productive until you regain connectivity. The Arrow 300+ supports Android™, iOS®, and Windows® smartphones and tablets, works with any third-party mobile apps, and includes access to the free Eos Tools Pro GNSS monitoring app. When you need to blend performance, accuracy, and flexibility, look no further than the Arrow 300+.

Arrow 300+ GNSS receiver from Eos Positioning Systems with RTK

Setting the Benchmark in Flexibility and Performance

Survey-Grade Accuracy

The Arrow 300+ GNSS receiver provides real-time 1 cm accuracy when connected to any RTK correction source. This lets your field crews get survey-grade accuracy anywhere, any time. No RTK? No problem: Ask our team about Atlas.

Maximum Satellite Coverage

With support for all global GNSS constellations, all regional RTK connections, optional Atlas for worldwide coverage, and SafeRTK for when your connection drops, the Arrow 300+ provides maximum confidence.

Completely Agnostic

Mobile devices and apps evolve constantly. The Arrow 300+ supports all GIS apps on all platforms. Meanwhile, the free Eos Tools Pro monitoring app supports all your Eos GNSS metadata and solutions.

Support for Countless Differential Corrections Sources

RTK Networks

The Arrow 300+ provides 8 mm horizontal accuracy and 2 cm vertical accuracy when connected to any RTK network, CORS station, or base station.

Learn about RTK >

Atlas®

When no RTK is available, the Arrow 300+ supports an optional Atlas subscription service for worldwide, satellite-based coverage. Available subscriptions are H10 (4 cm), H30 (15 cm) and Basic H50 (30 cm).

Learn about Atlas® >

SafeRTK®

SafeRTK is a proprietary feature on select Eos GNSS receivers that preserves survey-grade accuracy for up to 20 minutes after RTK connection loss. This gives you time to reconnect without interrupting work.

Learn about SafeRTK® >

SafeRTK - How to stay productive when RTK coverage is inconsistent GPS GIS GNSS remote mobile mapping

What is SafeRTK®?

There is nothing more frustrating than losing RTK network connection while working in areas with spotty cell coverage. SafeRTK is the answer. SafeRTK is a proprietary feature included exclusively with select Eos GNSS receivers including the Arrow 300+. Whenever cellular connection to your RTK network drops, SafeRTK takes over instantly and allows you to maintain RTK-level accuracy. It does so by drawing on powerful, worldwide, satellite-based Atlas signals in the background. Your survey-grade accuracy will be retained for up to 20 minutes, giving you time to reconnect to your differential correction source. This enables uninterrupted RTK accuracy in spotty areas.

Learn How SafeRTK® Works >

Arrow 300+ Technical Specifications

GPS SENSOR

  • GNSS multi-frequency RTK with carrier phase
  • Receiver Type: Triple-Frequency, All-Constellation GNSS RTK Receiver with 800+ Channels
  • GPS Signals Received: L1CA, L1P, L1C, L2P, L2C, L5
  • GLONASS: G1, G2, G3
  • Galileo Signals Received: E1BC, E5a, E5b, E5(AltBOC)
  • BeiDou Signals Received: B1i, B2i, B3i, B1C, B2A
  • QZSS Signals Received: L1CA, L2C, L5
  • IRNSS Signals Received: L5
  • SBAS Support: 3-Channel, Parallel Tracking (with SBAS Ranging)
  • L-Band (Atlas) Support: 1 Channel
  • Update Rate: 1 Hz Default
  • RTK Accuracy: 8 mm1+ 1 ppm Horizontal, 2 cm1 + 1 ppm Vertical
  • Atlas H10 Accuracy: < 4 cm HRMS1
  • Atlas H30 Accuracy: < 15 cm HRMS1
  • Atlas H50 Accuracy: < 30 cm HRMS1
  • SBAS Accuracy: < 30 cm HRMS1, < 60 cm 2dRMS1
  • Autonomous Accuracy: 1.2 meters HRMS1
  • Cold Start: < 60 Second Typical (No Almanac or Time)
  • Reacquisition: < 1 Second
  • Max Speed: 1,850 kph (1,150 mph, 999 knots)
  • Max Altitude: 18,288 m, 60,000 ft

DEVICE COMPATIBILITY

  • iPhone® and iPad®
  • Android™ smartphones and tablets
  • Windows®, Windows Mobile®

COMMUNICATION

  • Port: Bluetooth, USB 2.0, Serial
  • Bluetooth Transmission: Class 1, 300 m Typical Range2 (up to 1 km)
  • Bluetooth Frequency: 2,400 - 2,485 GHz
  • Fully Bluetooth Pre-Qualified: Dual-Mode Bluetooth 4.2 BD/EDR – BLE (v5.1 Tested)
  • Supported Bluetooth Profiles: SPP, iAP
  • Data I/O Protocol: NMEA 183, RTCM SC-104, Binary
  • Autonomous Output Datum: WGS-84 (Latest Revision)
  • SBAS Output Datum: ITRF (Current Year Epoch)
  • RTK Output Datum: Same as RTK Base
  • Raw Measurement Data: Binary, RINEX
  • Correction I/O Protocol: RTCM 2.x, 3.x, CMR, CMR+, Proprietary Binary
  • GPS Status LEDs: Power, GNSS, DGNSS, DIFF, Bluetooth
  • Battery Status LEDs: 5-LED Indicator
  • Data I/O formats: NMEA 0183, RTCM SC-104, Binary
  • Timing Output: 1PPS, CMOS, Active high, Rising Edge Sync, 10 kΩ, (w/Optional Serial Port) 10 pF Load
  • Event Marker Input: CMOS, Active Low, Falling Edge Sync, 10 kΩ, (w/Optional Serial Port) 10 pF Load

POWER

  • Battery Type: Field Replaceable, Rechargeable Lithium-Ion Pack (rechargeable inside unit or separately)
  • Battery Autonomy: 11+ Hours3
  • Charging Time: 4 Hours

ENVIRONMENTAL DETAILS

  • Operating Temperature: -40°C to +85°C (-40°F to +185°F)3
  • Storage Temperature: -40°C to +85°C (-40°F to +185°F)
  • Humidity: 95 % Non-Condensing
  • Compliance: FCC, CE, RoHS and Lead-Free

MECHANICAL DETAILS

  • Enclosure Material: Xenoy®
  • Enclosure Rating: Waterproof, Designed to Meet IP-67
  • Immersion: 30 cm, 30 Minutes
  • Dimensions (cm): 12.5 cm x 8.4 cm x 4.2 cm
  • Dimensions (inches): 4.92" x 3.3” x 1.65”
  • Weight: 372 g (0.82 lbs)
  • Data Connectors: Mini USB Type B Receptacle
  • Antenna Connector: SMA Female
  • Antenna Impedance: 50 Ω (Ohms)
  • Gain (No Cable): 27 dB (± 2 dB)
  • LNA Noise Figure at 25°C: 2.5 dB Typical
  • Voltage: +2.5 to +16 VDC
  • RF Connector: SMA Female
  • Dimensions (mm): 68 mm Diameter, 30 mm Height
  • Weight: 170 g (0.37 lbs)
  • Operating Temperature: -40°C to +85°C (-40°F to +185°F)
  • Humidity: Waterproof

STANDARD ACCESSORIES (INCLUDED)

  • Lithium-Ion Battery Pack
  • Pole Bracket and Clamp
  • 12 VDC Power Supply
  • Hard-Shell Carrying Case
  • USB Cable
  • Antenna Cable
  • GNSS Antenna
  • Antenna Mounting Plate

OPTIONAL ACTIVATIONS AND ACCESSORIES

  • Output Rates: 10 Hz, 20 Hz, 50 Hz
  • Spare Arrow Series Battery Pack
  • Atlas Satellite Correction Service
  • Vehicle Charger
GNSS Receiver Specification Footnotes:
  1. Depends on multipath environment, number of satellites in view, satellite geometry, baseline length (for local services) and ionospheric activities. Stated accuracies for baseline lengths of up to 50 km
  2. Transmission in free space
  3. Lithium-Ion battery performance degrades below -20°C (-4°F)
Download the Arrow 300+ Datasheet (Coming soon!)

Resources for Current Arrow 300+ Users

Get Started

Ready to get started with your Arrow 300+ receiver? Follow along with this Arrow Quick Start Guide to power on, Bluetooth-pair, and mount your Arrow 300+ GNSS receiver.

Launch Quick Start Guide >

Check Your Firmware

The latest firmware for the Arrow 300+ is 6.1Aa01. Check your firmware in the Eos Tools Pro “About” menu, then check against your serial number. If your firmware is not current, contact our technical support team for upgrade instructions.

Contact Technical Support >

Browse Resources

A variety of informative articles, how-to guides, and video tutorials are available in the Eos Knowledge Base. Browse content to make sure you’re getting the most out of your GNSS receiver.

Explore the Knowledge Base >