Emlid RCH205 Reach RS3 RTK GNSS receiver with tilt compensation

£2,249.17 Each Ex-VAT (EXW)

Multi-band RTK GNSS receiver with tilt compensation

Survey grade precision even in hard-to-reach spots. Comes with a mobile app.

Survey and stakeout faster

Effortless and robust


Watch The Emlid Launch Video: https://www.youtube.com/watch?v=QVq1Be39qOY


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Product Documents

Emlid’s Reach RS3 is a RTK GPS GNSS Receiver with tilt compensation. As a result it provides survey grade precision even in hard-to-reach spots.

Accurate results even with large tilt angles

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.

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
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 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

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

Up to 22 hours on 1 charge

Built-in LTE modem


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.


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 radio

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**

*Requires a 410-470 MHz
antenna, sold separately

**TRIMTALK is a trademark
of Trimble Inc.

Comes with software
for the field and the office


and compact

126 x 126 x 142 mm
950 g


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.

Emlid’s Reach RS3 is a RTK GPS GNSS Receiver with tilt compensation Specification


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


  • Autonomy 18 hrs as an RTK rover with tilt
    22 hrs of logging
  • Battery Li-Ion 5200 mAh, 7.2
    V37.44 Wh
  • Charging USB Type-C 5 V, 3 A


  • 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


  • Radio LoRa
    Frequency range
    Transmit and receive
    868/915 MHz
    0.1 W
    Up to 8 km
    Frequency range
    Modulation type
    410–470 MHz
    TRIMTALK 450S**
  • LTE modem Regions
    FDD-LTE: 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
  • Wi-Fi 802.11 b/g/n
  • Bluetooth 4.0/2.1 EDR
  • Ports RS-232, USB Type-C
  • *Requires a 410-470 MHz antenna, sold separately. **TRIMTALK is a trademark of Trimble Inc.


  • Corrections NTRIP, RTCM3
  • Position output NMEA, LLH/XYZ
  • Data logging RINEX, NMEA, LLH/XYZ, UBX
  • Internal storage 16 GB


  • Signal tracked GPS/QZSS L1C/A, L2C,
    BeiDou B1I, B2I, Galileo
    E1B/C, E5b
  • Number of channels 184
  • Update rates up to 10 Hz
  • IMU 6DOF


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