RTK receivers
for archaeology

Map out the excavation sites and pinpoint findings with centimeter accuracy.

Starting from $799

Choose a receiver

Researchers of the Joukowsky Institute for
Archaeology & the Ancient World in Petra, Jordan

A complete solution
for survey and mapping

a site grid

Speed up grid layout on site. Reach allows you to mark up the squares with high accuracy relative to any reference point on site.

positional data

Get the precise position of discovered artifacts and visualize it with your field software.

Measure GCP
for aerial mapping

Establish ground control points (GCP) with Reach before flying a site of interest. Upload GCP coordinates to your processing software to georeference the map with centimeter accuracy.

Integrates with geophysical instruments

Enhance the positional accuracy of data collected with your Ground Penetrating Radar or Gradiometer. 
Reach smoothly integrates with geophysical equipment over BT, RS-232 or USB.

How Reach receivers work

Reach is an RTK receiver. RTK is a technique used to improve the accuracy of a GPS receiver. Traditional GPS receivers could only determine the position with 2–4 meters accuracy. RTK can give you 1–2 centimeter accuracy.

You don’t necessarily need a second unit for RTK all the time. Usually, there are local services that share base corrections over the Internet. This technology is called NTRIP.

How to get started

the ReachView app

App Store or Google Play, or scan the QR code on the sticker on top of Reach.

Place a base or connect to NTRIP service to get corrections

Reach needs a base station as a source of corrections. The base might be another Reach RS2 receiver or an NTRIP service.

Start collecting data
using a rover

Now you can collect and stake out points with the rover.

Android and iOS

Surveying with ReachView 3

Import and export in CSV

Record each position as a point with centimeter precise coordinates. Export projects and open them in GIS or CAD software like AutoCAD, ArcGIS, QGIS, and others.

Coordinate systems based on

WGS84, NAD83, GDA2020, and others

Collect and stake out points

Stakeout is used to find exact physical locations of points. They can be collected in ReachView or imported from other CAD or GIS software.



Logging in RINEX: record raw data, position, and base correction logs

Record raw data, position and base correction logs. Point collection and recording of RAW data are independent processes and can be used simultaneously. ReachView has a simple and intuitive interface for logging configuration and control.

Reach RS+ is designed for harsh conditions Reach RS+ is designed for harsh conditions

for harsh conditions

Reach receivers are designed to work in challenging conditions, even in dusty areas and under the burning sun

-20 to +65 ºС

Working temperature. Isn’t afraid of either heat or cold.


Can be held 1 meter deep underwater for half an hour.

Up to
22 hours

Industrial LiFePO4 battery that doesn’t die of cold. Can charge over USB from a powerbank.

User reviews

Austin Chad Hill

Research Associate, Department of Anthropology, Dartmouth College

The Reach system provides a novel approach to recording accurate landscape data. Reach RS can be used to record coordinates quickly and accurately using a system that is low cost and ultra-portable.

Archaeo Perspectives

Digital Archaeology Services, Austria

Thanks to Reach, together with our partners we managed to record centimeter-accurate coordinates of archaeological structures as well as underwater features and produce valuable data for further research.

Mark Willis

Professional Archaeologist, USA

We've also been using the RS2 for our archaeological studies of prehistoric petroglyphs. It's is perfect when we need highly accurate location information. It can keep a fix against a cliff wall!

Peter Cobb

Assistant Professor, University of Hong Kong

We use Reach for spatial recording during our archaeological fieldwork in Armenia. This equipment facilities data collection through its affordability and ease-of-deployment.

Choosing between RS+ and RS2
Depending on the working area


in the Emlid Store

The ReachView app and all features of Reach RS2+ and Reach RS+ are included

Delivery worldwide.
2-5 days by DHL, up to 3 weeks by airpost.

Find local dealers



  • Dimensions 126 x 126 x 142 mm
  • Weight 950 g
  • Operating tº -20 to +65 ºC
  • Ingress protection IP67


  • Autonomy 16 hrs as 3.5G RTK rover,
    22 hrs logging
  • Battery LiFePO4 6400 mAh, 6.4 V
  • External power input 6–40 V
  • Charging USB Type-C 5 V, 2 A
  • Certification FCC, CE


  • Static H: 4 mm + 0.5 ppm
    V: 8 mm + 1 ppm
  • PPK H: 5 mm + 0.5 ppm
    V: 10 mm + 1 ppm
  • RTK H: 7 mm + 1 ppm
    V: 14 mm + 1 ppm
  • Convergence time ~5 s typically


  • LoRa radio
  • Frequency range 868/915 MHz
  • Power 0.1 W
  • Distance Up to 8 km
  • 3.5G modem
  • Regions Global
  • Bands Quad-band, 850/1900,
    900/1800 MHz
  • SIM card Nano-SIM
  • Wi-Fi 802.11 b/g/n
  • Bluetooth 4.0/2.1 EDR
  • Ports RS-232, USB Type-C


  • Corrections NTRIP, RTCM3
  • Position output NMEA, LLH/XYZ
  • Data logging RINEX
  • Internal storage 16 GB
    160+ days of logging at 1 Hz


  • Signal tracked GPS/QZSS L1C/A, L2C
    BeiDou B1I, B2I
    Galileo E1B/C, E5b
  • Number of channels 184
  • Update rates up to 10Hz
  • IMU 9DOF


  • Dimensions 145 x 145 x 85 mm
  • Weight 690 g
  • Operating tº -20 to +65 ºC
  • Ingress protection IP67


  • Autonomy Up to 30 hrs
  • Battery LiFePO4 3.2 V
  • External power input 6–40 V
  • Charging MicroUSB 5 V
  • Certification FCC, CE


  • Static horizontal 5 mm + 1 ppm
  • Static vertical 10 mm + 2 ppm
  • Kinematic horizontal 7 mm + 1 ppm
  • Kinematic vertical 14 mm + 2 ppm


  • LoRa radio
  • Frequency range 868/915 MHz
  • Distance Up to 8 km
  • Wi-Fi 802.11 b/g/n
  • Bluetooth 4.0/2.1 EDR
  • Ports RS-232, MicroUSB


  • Corrections NTRIP, RTCM3
  • Position output NMEA, LLH/XYZ
  • Data logging RINEX with events
    with update rate up to 14 Hz
  • Internal storage 8 GB


  • Signal tracked GPS/QZSS L1, GLONASS G1,
    BeiDou B1, Galileo E1, SBAS
  • Number of channels 72
  • Update rates 14 Hz / 5 Hz
  • IMU 9DOF

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