Emlid Reach RS3 receiver.

Emlid Launches Reach RS3 GNSS Receiver With Tilt Compensation

Emlid launches the Reach RS3 GNSS receiver. Key upgrades include IMU tilt compensation, enabling survey-grade accuracy at large tilt angles and a faster stake out. Reach RS3 has expanded connectivity with UHF radio support and is a multi-band base and rover with an IP67 rating and up to 22 hours of battery life.

Published on: Sep 26, 2023
Last updated: Sep 26, 2023

5 minute read

Emlid Reach RS3 GNSS receiver with IMU tilt compensation.

  • Emlid launches a ground-breaking addition to its product line-up: The Reach RS3;
  • Headline feature is the Reach RS3's IMU Tilt Compensation, providing survey-grade accuracy, even at large tilt angles;
  • Reach RS3 is a multi-band base and rover, with a built-in LTE modem;
  • Obtains a centimetre-accurate solution in about 5 seconds;
  • Get corrections from CORS, Reach, or 3rd-party base;
  • Dual-band radio: LoRa 868/915 MHz or UHF 450 MHz;
  • Rugged survey solution: Up to 22 hours on one charge, IP67-rated, and an operating temperature of -20°C to 65°C.

Emlid has unveiled its new flagship Reach RS3 GNSS receiver with IMU tilt compensation.

This cutting-edge receiver was designed to ensure survey-grade precision, even at hard-to-reach locations, such as building corners, points on the roadway, or at the edges of an excavation.


Emlid Reach RS3 has IMU tilt compensation.


Aside from IMU tilt compensation, other key features of the Reach RS3 include:

  • Multi-band base and a rover.
  • Reach RS3 provides a centimetre-accurate fix in about 5 seconds.
  • Built-in LTE modem.
  • Get corrections from CORS, Reach, or 3rd-party base.
  • Dual-band radio - works over LoRA and is compatible with 450 MHz radios.
  • Up to 22 hours of operation on one charge.
  • Rugged design: Emlid Reach RS3 is rated IP67 dustproof and waterproof with an operating temperature range of -20°C to 65°C.
  • Compatible with a full software suite for professional surveying.

This blog explores the RS3's key features in more detail and how they improve surveying workflows.

heliguy™ has partnered with Emlid to offer its product portfolio, including the Reach RS3. heliguy™ has an in-house surveying department and can help you integrate Emlid solutions into your workflows.

Tilt Compensation

The headline feature of the Reach RS3 is its IMU tilt compensation.

This enables you to survey at large tilt angles while still maintaining survey-grade accuracy and continuously measures and corrects tilt in real-time to keep you on target.

It speeds up your data collection and stake out and takes the pain out of surveying hard-to-reach locations, such as building corners, obstructions, points on the roadway, at the edge of an excavation, or in the water.


Tilt compensation on Emlid Reach RS3 provides high levels of accuracy.


The IMU-based tilt compensation in Reach RS3 enables you to make measurements with up to 60 degrees of tilt while still staying within 20 mm of accuracy.

It comes factory-calibrated and works right out of the box. Just start walking with the receiver or tilt it to initialise.

Tilt initialisation takes about 20 metres of walking or 10-20 seconds of tilting.

The receiver is also magnetically immune. It features IMU-based tilt compensation with no magnetometer on board, which means metal objects and electronics won’t affect the accuracy of Reach RS3.

Multi-band Receiver

Reach RS3 is a multi-band receiver that works both as a base and a rover.

It gives you versatile options to receive corrections from CORS, another Reach, or a third-party base, so you can mix and match RTK receivers in your fleet.


Emlid Reach RS3 has NTRIP and dual-band radio capabilities.


In addition to working over LoRa, the new Reach RS3 is also compatible with 450 MHz radios.

NTRIP Connectivity

Receive corrections from CORS, an NTRIP service, or any other GNSS receiver with Emlid NTRIP Caster. The range is over 60km in RTK and 100km in PPK.

Dual-band Radio 

Receive or send corrections between Reach receivers via LoRa radio. This works on line-of-sight distances up to 8 km and is perfect for areas without internet coverage for NTRIP.

You can also use UHF in the 450 MHz range to receive corrections from bases with radios that transmit RTCM3 over TRIMTALK 450S (trademark of Trimble Inc.). This workflow requires an additional 410-470 MHz antenna.


Receive corrections via LoRA radio or UHF with the Emlid Reach RS3 receiver.


This advancement allows RS3 users to receive corrections from third-party bases and external radios, making integration with other GNSS brands and existing on-site infrastructure smoother than ever, maximising the baseline.

Reach RS3: Built For Versatile Surveying

The Reach RS3 is engineered for versatile and streamlined surveying, helping users obtain a rapid fix, utilise post-processing workflows, and survey for long periods.

Get A Fix In 5 Seconds

Reach RS3 provides a centimetre-accurate solution in about 5 seconds and maintains robust performance even when the sky view is partially obstructed or the unit is tilted.

The receiver tracks GPS/QZSS, GLONASS, BeiDou, and Galileo.

RINEX logging and PPP support

Reach RS3 records raw data in the RINEX format for post-processing.

Logs are also compatible with OPUS, AUSPOS, and PPP services so that you can get high-accuracy results anywhere.


Emlid Reach RS3 receiver.


Built-in LTE modem

The receiver has a built-in LTE modem for a SIM card to send or receive corrections via NTRIP.

Up to 22 hours on 1 charge

Reach’s industrial-grade battery lasts for 22 hours of logging or 18 hours of work as an RTK rover with tilt compensation.

For uninterrupted multi-day operations, simply plug Reach into a power bank.

Compact and Rugged Design

Reach RS3 is 126 x 142 mm in size, fits in a small bag, and weighs 950g - less than a typical survey pole.

The elastomer-coated polycarbonate body makes Reach RS3 impact-resistant and ready for even the harshest conditions.

The receiver is rated IP67 dustproof and waterproof with an operating temperature range of -20°C to 65°C.

Software Ecosystem

Reach RS3 comes with the Emlid Flow mobile app for iOS and Android.

The free version allows you to manage all field-related tasks, including tilt compensation, receiver configuration, RINEX logging, points collection, and stakeout.


Use Emlid Reach RS3 with Emlid Flow software.


The field app syncs with the cloud-based Emlid Flow 360 to prepare and manage your projects from a browser in the comfort of your office.

You can also choose to subscribe to the Emlid Flow Survey Plan to access additional productivity features: coding, linework, localization, and WMS/WMTS maps. A single subscription is valid for both Emlid Flow and Emlid Flow 360. Order Reach RS3 and get a free 3-month subscription to the Survey Plan.

To get more out of your Reach receiver, try Emlid NTRIP Caster and Emlid Studio for free.

Emlid NTRIP Caster is a handy way to stream RTK corrections from your base to the rovers. If RTK is not an option for your survey workflow, you can post-process your data in the free PPK software Emlid Studio.


To discuss the Emlid Reach RS3 in more detail and to speak to our in-house surveying department, contact us.

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