Reach RS3
RTK GNSS receiver with tilt compensation
Works as a base or rover with dual-band radio or NTRIP. Survey grade accuracy in RTK, PPK and PPP.
Centimetre accuracy up to 60° tilt
Centimetre accuracy up to 60° tilt
Reach RS3's IMU-based tilt compensation allows you to measure up to 60 degrees of tilt with an accuracy of 20mm.
Reach RS3 continuously measures and corrects tilt in real time to keep you on target.

Survey and stakeout faster.
No need to check the bubble
Effortless and robust
IMU tilt compensation
Calibration-free
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 even when working close to metal structures.
Quick initialization
Tilt initialization takes about 20 meters of walking or 10-20 seconds of tilting. Usually ready on the way from the car.
Rapid and Reliable GNSS receiver

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

Internet
NTRIP
Base and RoverWork 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 RoverPerfect for areas with no internet coverage for NTRIP. LoRa is used when connecting Emlid receivers over the radio.
COMPATIBILITY: Reach RS2 / RS2+ / RS3
UHF 450 MHz
RoverAn 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**
*Requires a 410-470 MHz antenna, sold separately
**TRIMTALK is a trademark of Trimble Inc.
Comes with software
for the field and the office
Emlid Flow efficiently manages all field-related tasks, including receiver configuration, RINEX logging, data collection, and stakeout.
The basic features are available for free to all users. Upgrade your Emlid Flow and Flow 360 with a single subscription.
You can access your survey data via the cloud-based Emlid Flow 360. It allows you to prepare, manage, and export your projects from a browser.
The basic features are available for free to all users. Upgrade your Emlid Flow and Flow 360 with a single subscription.

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

Rugged
and compact
126 x 126 x 142 mm 950 g
Waterproof
RS3 is waterproof to IP67. Silicone plugs completely seal and protect all connectors from water and dust.
/
/
22 hours on one charge
The Reach RS3 battery can withstand high and low temperatures and over 2000 charge and discharge cycles. While others are hot-swapping batteries, your Reach just keeps on working.
-20 to +65 ºС
The Reach RS3 battery can withstand high and low temperatures and over 2000 charge and discharge cycles. While others are hot-swapping batteries, your Reach just keeps on working.
Impact-resistant
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.
User reviews
In the package
- Reach RS3
- LoRa antenna
- USB cable
- Carrying case with a strap

Need help?
Tutorials
Watch quickstart guides and comprehensive feature overviews.
Emlid support team regularly updates all materials based on the most frequently asked questions and popular workflows.

Community
Join the Forum and Facebook User Group to get in touch with the Emlid team, get tips and advice, and connect with Emlid users from around the world.
Reach RS3 in the Emlid Store
Shipping from Chicago
2-3 days by USPS Priority Mail Express
2-7 days by FedEx, UPS
Updates
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Specification
Mechanical
- Dimensions 126 x 126 x 142 mm
- Weight 950 g
- Operating temperature -20 to +65 ºC
- Ingress protection IP67
Electrical
-
Autonomy 18 hrs as an RTK rover with tilt
22 hrs of logging -
Battery Li-Ion 5200 mAh, 7.2 V
37.44 Wh - Charging USB Type-C 5 V, 3 A
Positioning
-
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 - Tilt RTK + 2 mm + 0.3 mm/°
- Convergence time ~5 s typically
Connectivity
-
Radio
LoRa
Frequency range
Transmit and receive
Power
Distance
868/915 MHz
0.1 W
Up to 8 km UHF*Frequency range
Receive-only
Protocols
Modulation type
410–470 MHz
TRIMTALK 450S**
GMSK -
LTE modem
Regions
Bands Global
FDD-LTE: 1, 2, 3, 4, 5,
7, 8, 12, 13,
18, 19, 20, 26, 28, 66
TD-LTE: 38, 40, 41
UMTS (WCDMA/FDD):
1, 3, 2, 4, 5, 6, 8, 19
Quad-band, 850/1900
900/1800 MHz SIM card Nano-SIM -
LTE modem
Regions
Bands Global
FDD-LTE: 1, 2, 3, 4, 5,
7, 8, 12, 13,
18, 19, 20, 26, 28, 66
TD-LTE: 38, 40, 41
UMTS (WCDMA/FDD):
1, 3, 2, 4, 5, 6, 8, 19
Quad-band, 850/1900
900/1800 MHz SIM card Nano-SIM - Wi-Fi 802.11 b/g/n
- Bluetooth 4.0 (BR/EDR + LE)
- Ports RS-232, USB Type-C
- *Requires a 410-470 MHz antenna, sold separately. **TRIMTALK is a trademark of Trimble Inc.
Data
- Corrections NTRIP, RTCM3
- Position output NMEA, LLH/XYZ
- Data logging RINEX, NMEA, LLH/XYZ, UBX
- Internal storage 16 GB
GNSS
-
Signal tracked GPS/QZSS L1C/A, L2C,
GLONASS L1OF, L2OF,
BeiDou B1I, B2I, Galileo
E1B/C, E5b - Number of channels 184
- Update rates up to 10 Hz
- IMU 6DOF