Reach RS4

Name: Reach RS4
SKU: 22987
Availability: InStock

$5,090.00 CAD

All-band RTK GNSS receiver with tilt compensation

High precision even under a dense canopy. Comes with a mobile app.

High precision: RTK: 7 mm + 1 ppm
Tilt compensation: RTK: 2 mm + 0.3 mm/°

All-band support

GPS: L1C/A, L2C, L5
GLONASS: L1OF, L2OF
Galileo: E1-B/C, E5a, E6
BeiDou: B1I, B1C, B2a, B3I
QZSS: L1C/A, L1C/B11, L2C, L5
NavIC: L1-SPS Data, L5-SPS

Base and rover: 915 MHz LoRa 450 MHz UHF NTRIP

16 hours on one charge: Li-Ion battery, USB Type-C charging

Durability: Magnesium alloy body, IP68 rating and operating temperatures ranging from -40 to +65°C (-40 to +149ºF)

Package includes

– Reach RS4
– Carrying case
– USB Type-C cable
– LoRa Antenna 860-930 MHz
– UHF Antenna 410-470 MHz

Category: Emlid

Description

Description

All-band RTK GNSS receiver with tilt compensation. Ultimate precision, even in the most challenging conditions. Works under tree canopy.

The Reach RS4 can track all available satellite constellations and frequencies, including the lower L5 and L6 bands, which are more resistant to multipath and interference. With 672 channels, it can track 40+ satellites at a time. These features ensure reliable performance and centimeter-level precision.

Accuracy: 7mm + 1 ppm in RTK
Bands: L1/L2/L5/L6
Constellations: GPS, GLONASS, Galileo, BeiDou, QZSS, NavIC
Channels: 672 channels
Fix: Fix in less than 5 seconds

Next generation tilt compensation: The Reach RS4 delivers accurate results even at high tilt angles — for example, a 30° tilt still achieves 18 mm precision.¹ The compensation mechanism activates with just a few moves and remains stable throughout the survey, saving time and avoiding the need for recalibration.

Factory Calibrated
Faster initialization
Immune to interference
No angle limit

Base and rover

NTRIP: Work in RTK with VRS or a single baseline CORS network in RTCM3 format. You can also connect another GNSS receiver as an NTRIP base using Emlid NTRIP Caster

Dual-band radio

UHF 450 MHz

Transmit and receive

Up to 2W ( may require a license)

Compatible with Reach and 3rd-party receivers with TRIMTALK 450S support³

LoRa 915 MHz

Transmit and receive

Up to 1W (license-free in North America)

Compatible with Reach receivers

Quick release mount

This mount is specifically designed for tilt compensation, eliminating backlash and securing the receiver firmly to the survey pole. Even a small amount of wobble between the device and the pole can compromise the accuracy when tilting. The quick-release system provides a fast and reliable connection for maximum precision. Find it here

Built to perform in extreme conditions

Magnesium alloy body

The RS4’s magnesium alloy body is as strong as it is lightweight. This material is often used for aerospace equipment and high-end electronics. It strikes the perfect balance of durability and lightness, making it ideal for use in tough conditions while remaining easy to handle.

16 hours on one charge

The RS4 offers an impressive battery life of up to 16 hours on a single charge. Use the USB-C for recharging or use a power bank for even greater flexibility. Designed to keep working as hard as you do, without interruption.

Waterproof

Thanks to its IP68 rating, the RS4 is fully dustproof and waterproof. Whether it’s raining, snowing or a dusty construction site, the Reach RS4 will keep working.

-40 to +65 ºС

The Reach RS4 operates in temperatures from -40°C to +65°C. Its performance remains excellent in both freezing cold and scorching heat.

Software for every stage of your project

The Reach RS4 comes with Emlid Flow, a comprehensive mobile and cloud solution compatible with both iOS and Android. It keeps your team aligned and your projects on track while supporting various site tasks.

Coordinate your team

Invite team members, share projects and manage access
Monitor field progress from the office and exchange data instantly with real-time sync
One workflow for the whole team, with data that is always up to date, a consistent interface, and no additional training required

Execute projects on site

Topographic surveys: gather terrain and elevation data accurately
Stakeout & layouts – place points, lines, and markers directly in the field
Line & road surveys – stake centerlines and offsets with precision
Cut & Fill calculations – measure earthworks and stockpiles on site
As-built verification – check constructed structures against your plans

Dimensions: 128.6 x 128.6 x 99.3 mm
Weight: 920 g
Operating temperatures: -40 to +65 °C
Ingress protection: IP 68
Autonomy: 16 hrs as RTK rover with tilt
Battery: Li-Ion 5000 mAh, 7.2 V 36 Wh
Static Accuracy: 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 compensation: RTK + 2 mm + 0.3 mm/°
Convergence time: ~5 s typically

Connectivity

LoRa radio up to 1W
- Frequency range: 868/915 MHz
- Distance: Up to 8km
UHF Radio up to 2W
- Frequency Range: 410–470 MHz
- Protocols: TRIMTALK 450S**
- Modulation Type: GMSK
LTE Modem:
- Region: Global
- Bands: FDD-LTE: 1, 2, 3, 4, 5,
  7, 8, 12, 13,
  18, 19, 20, 26, 28
  TD-LTE: 38, 39, 40, 41
  UMTS (UHPS/FDD):
  1, 2, 5, 8
  Quad-band, 850/1900
  900/1800 MHz
- Sim Card: Nano-SIM
Wi-Fi: 802.11a/b/g/n
Bluetooth: 5.1 (BR/EDR + LE)
Ports: RS-232, USB Type-C

Data

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

GNSS

Signal tracked: PS: L1C/A, L2C, L5,
GLONASS: L1OF, L2OF,
Galileo: E1-B/C, E5a, E6,
BeiDou: B1I, B1C, B2a, B3I,
QZSS: L1C/A, L1C/B11, L2C, L5,
NavIC: L1-SPS Data, L5-SPS
Number of channels: 672
Update rates: up to 10 Hz

Reach RS4

Reach RS4