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Reach RS3

RTK GNSS receiver
with tilt compensation

Survey grade precision,
even in hard-to-reach spots

Multi-band base and rover
IMU tilt compensation
LTE modem
Dual-band radio


Accurate results even with large tilt angles

The IMU-based tilt compensation [1] in Reach RS3 enables you to make measurements with up to 60 degrees of tilt while still staying within 20 mm of accuracy.

Reach RS3 continuously measures and corrects tilt in real-time to keep you on target.


[1] Tilt compensation requires the Emlid Flow or a compatible third-party app

Survey and stakeout faster
No need to check the bubble

Effortless and robust Tilt compensation


We calibrate each unit individually at the factory, so you can get your Reach RS3 up and running right out of the box.

Immune to magnetic disturbances

Unaffected by magnetic fields, the RS3 provides robust tilt compensation [1] even when working close to metal structures.

Quick initialisation

Tilt initialisation takes about 20 meters of walking or 10-20 seconds of tilting. Usually ready on the way from the car.




[1] Tilt compensation requires the Emlid Flow or a compatible third-party app

Rapid and Reliable GNSS receiver

Gets a fix in 5 seconds

Reach RS3 gets a centimeter-accurate solution in about 5 seconds. It maintains robust performance even when the sky view is partially obstructed, or the receiver itself is tilted.

GPS/QZSS, GLONASS, BeiDou, and Galileo
L1C/A, L2C, L1OF, L2OF, B1I, B2I, E1B/C, E5b

RINEX logging and PPP support

Record raw data in the RINEX format for post-processing. You can use free PPK software, Emlid Studio, or any other software that supports RINEX. Logs are also compatible with OPUS, AUSPOS, and PPP services, so you can get highly accurate results anywhere in the world.

16 GB storage
160+ days of logging at 1 Hz

Up to 22 hours on 1 charge

The Reach RS3 comes equipped with a built-in, industrial-grade battery that can endure up to 22 hours of logging or 18 hours of working with tilt in RTK.

For uninterrupted multi-day operation, simply connect a power bank, just like you would with your mobile phone.

Charging via USB-C

Built-in LTE modem

Insert a SIM card into your Reach RS3 and let it broadcast or receive corrections via NTRIP.


Get corrections from CORS, Reach, or 3rd-party base


Base and Rover

Work in RTK with VRS or a single baseline CORS network. You can also connect another GNSS receiver as an NTRIP base using Emlid NTRIP Caster.

|  Compatibility – Any receiver with RTCM3 support


Dual-band radio

LoRa 868/915 MHz 
Base and Rover

Perfect for areas with no internet coverage for NTRIP. LoRa is used when connecting Emlid receivers over the radio.

|  Compatibility – All Emlid receivers with built-in radios

UHF 450 MHz

An option to mix and match RTK receivers within your fleet. You can configure your Reach RS3 to receive corrections from an existing base.

You can also use a high-power external radio on your Reach base and connect with the UHF radio receiver in Reach RS3.

|  Compatibility – Bases with radios that transmit TRIMTALK* 450S
*TRIMTALK is a trademark of Trimble Inc.

Comes with software
for the field and the office

Emlid Flow

Emlid Flow efficiently manages all field-related tasks, including receiver configuration, RINEX logging, data collection, and stakeout.

• Tilt Compensation
• Data collection and stakeout
• Localization
• Coding
• Logging
• Background maps
• Base and rover setup
• Sync up to 3 devices
• Base shift
• CSV, DXF, SHP export and import

For iOS and Android. The basic features are available for free to all users. Upgrade your Emlid Flow and Flow 360 with a single subscription.

Emlid Flow 360

Free post-processing software for macOS and Windows.
Learn more about Emlid Studio here.

• Kinematic processing
• Static processing
• RTK Drone data processing
• Raw data analysis
• Stop & Go with Emlid Flow

The basic features are available for free to all users. Upgrade your Emlid Flow and Flow 360 with a single subscription.

Emlid Caster

Connect up to 10 rovers to your base station via the internet or set up your own NTRIP network with Emlid Caster.
Learn more about Emlid Caster here.

• Available for free and works worldwide
• Works with Reach and other receivers with NTRIP support
• RTCM3 and other correction formats support
• Up to 5 bases and 10 rovers at the same time

Built for work

Rugged and compact

126 x 126 x 142 mm


RS3 is waterproof up to a one meter depth. Silicone plugs completely seal and protect all connectors from water and dust.

Industrial battery

The Reach RS3 Li-Ion battery handles high and low temperatures well and over 2000 cycles of charging and discharging while maintaining its original capacity.

While others are hot-swapping batteries, your Reach just keeps working.

20 to +65 ºС

We extensively tested Reach RS3 in conditions that simulate the coldest winters and hottest summers.


The body of the Reach RS3 is made of polycarbonate and coated with elastomer. The combination of these materials makes your Reach RS3 drop resistant and ready for the harshest conditions.

In the package

  • Reach RS3
  • LoRa antenna
  • USB cable
  • Carrying case with a strap   




126 x 126 x 142mm



Operating temperature

-20 to + 65 ºC

Ingress protection




18 hrs as an RTK rover with tilt,
22 hrs of logging


Li-Ion 5200 mAh, 7.2 V 37.44 Wh


USB Type-C 5 V, 3 A



H: 4 mm + 0.5 ppm
V: 8 mm + 1 ppm


H: 5 mm + 0.5 ppm
V: 10 mm + 1 ppm


H: 7mm + 1 ppm
V: 14mm + 1 ppm


RTK + 2 mm + 0.3 mm/°

Convergence time

~5s typically



LoRa transmit and receive
▪ Frequency range 868/915 MHz
▪ Power 0.1W
▪ Distance Up to 8km
UHF receive-only
▪ Frequency range 410–470 MHz
▪ Protocols TRIMTALK 450S*
▪ Modulation type GMSK

*TRIMTALK is a trademark of Trimble Inc.

LTE modem

Regions Global
1, 2, 3, 4, 5, 7, 8, 12, 13, 18, 19, 20, 26, 28, 66
TD-LTE: 38, 40, 41
1, 3, 2, 4, 5, 6, 8, 19
Quad-band, 850/1900, 900/1800 MHz
SIM card Nano-SIM


802.11 b/g/n


4.0/2.1 EDR


RS-232, USB Type-C




Position output


Data logging


Internal storage

160+ days of logging at 1 Hz


Signal tracked

GPS/QZSS L1C/A, L2C, GLONASS L1OF, L2OF, BeiDou B1I, B2I, Galileo E1B/C, E5b

Update rates

up to 10Hz

Number of channels



Let's connect and discuss your needs

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