Free standard shipping across the United States.
Visit Emlid US Store.

Reach RS2+

RTK base station for Phantom 4 RTK and other RTK-capable drones

Get centimeter-precise
positional data.



Reach RS2+ seamlessly integrates with RTK-capable drones by DJI and other brands

PPK survey with Phantom 4 RTK and Reach RS2

by Rory Gillies from Shetland Flyer Aerial Media

This technology is capable of providing extremely accurate mapping and surveying using RTK positioning. To demonstrate its capability, Rory, a commercial flyer, set up the Reach RS2 base station over an established benchmark point, enabled raw data logging and performed a flight. Then, back in the office, he post-processed the logs with RTKPost and Agisoft Metashape.

Site monitoring with Reach RS2
and Autel EVO II Enterprise

by Dave Pitman from Olympic Aerial Solutions, US

Our user Dave Pitman prefers RTK workflow when surveying with Reach RS2 and the EVO II Enterprise. To place ground control points for a site monitoring project, he used Reach as a rover connected to a corrections network (NTRIP).
Then Reach RS2 was set up as a base over the point with known coordinates and transmitted RTK corrections to the drone via Emlid NTRIP Caster.
Placing his own base for RTK corrections instead of using the NTRIP service to supply corrections directly to the drone helped Dave to shorten the baseline and achieve greater DEM data accuracy.

2D orthomosaic with Phantom 4 
RTK and Reach RS2

by Fergal McCarthy from Drone Services Ireland

During the RTK survey, Phantom 4 RTK needs real-time corrections. The Drone Services Ireland team placed the base at the top of the site for the purpose. They used Emlid NTRIP Caster to transmit corrections from the base station to the Phantom 4 RTK and an additional Reach RS2 for placing GCPs.
This setup allowed the team to maintain RTK fix solutions throughout the whole mission and land the drone a few centimeters from where it took off. After the flight, the Drone Service Ireland team created a 2D orthomosaic of the Old Head of Kinsale Golf Course.

Precision landing during drone mapping in RTK mode by Drone Services Ireland


over NTRIP

RTK-capable drones need a base station as a source of corrections during flight. To connect your drone with the Reach base and pass RTK corrections, you can use Emlid NTRIP Caster. Set up your NTRIP credentials in Emlid Flow app by registering and creating an account. The app allows you to keep accounts for multiple NTRIP services in one place.

Logs RINEX for PPK

For PPK mapping, the Reach  RS2+ base station logs GNSS data in RINEX format. After the flight, you can process the RINEX files and align your photos to the coordinates.

How to set Reach RS2 as a base station for DJI Phantom 4 RTK drone

How to get started in


Сreate an NTRIP mount point

Log in or create an account on the NTRIP service. You will be allocated a particular port and IP address as part of your credentials. You can then use your credentials to input your mount point’s details for both a base and a drone.


Set up a base to transmit the corrections

Place your base. Set up the base coordinates for RTK mode and enable RINEX logging for PPK mode in the Emlid Flow app.


Connect your base to the mount point

Insert credentials of NTRIP Caster to the Correction output settings in Emlid Flow app.


Connect your Phantom
RTK drone to the same mount point

Go to the RTK Settings tab on your flight controller and insert your NTRIP credentials for rover that you got on the Emlid Caster.


a flight

Provide the Phantom 4 RTK with a clear sky view and proceed to the mission.



Download the precisely geotagged photos and use them to create orthophotos.


Set up a base

Place your Reach Reach RS2 / RS2+ base. Enable RINEX logging for PPK mode in the Emlid Flow app.


Set up logging on your
Phantom RTK drone

On your flight controller, set up a flight in GNSS mode to record the raw position information.


a flight

Provide your drone with a clear sky view and proceed to the mission.


Export data

Download the RINEX files from Reach RS2 / RS2+, the raw positioning data, and the photos' timestamps from your drone.


Process logs

Process the files in Emlid Studio to get an accurate position for each photo. 0000 0000


Create your orthophotos

Proceed to create a map with accurately geotagged photos. 00000000

Engineered to be tough

Reach receivers are designed to work in challenging conditions

Up to 22 hours battery life

The industrial LiFePO4 battery doesn't wear out and can be charged via USB from a power bank.


All the unit’s connectors are completely sealed and protected with silicone plugs.

Functions in -20 to +65 ºС

It is capable of working in an incredible range of temperatures; it isn’t afraid of heat or cold.

in the Emlid Store

The Emlid Flow app and all features of Reach are included in the price and fully available.

Delivery worldwide.
2-5 days by DHL, up to 3 weeks by airpost.

Find local dealers


Reach RS2+ Datasheet
135 kb


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


  • Autonomy 16 hrs as LTE RTK rover,
    22 hrs logging
  • Battery LiFePO4 6400 mAh, 6.4 V
  • External power input 6–40 V
  • Charging USB Type-C 5 V, 2 A
  • Certification FCC, CE


  • 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
  • Convergence time ~5 s typically


  • Lora Radio Frequency range
    868/915 MHz
    0.1 W
    Up to 8 km
  • 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
  • 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


  • Corrections NTRIP, RTCM3
  • Position output NMEA, LLH/XYZ
  • Data logging RINEX
  • Internal storage 16 GB
    160+ days of logging at 1 Hz


  • 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 9DOF

Have a question?
Ask our team

Email us at  or fill in the contact form. Our application engineers will reply to you within a working day
(9:00-18:00 CET).

This site is protected by reCAPTCHA, and the Google Privacy Policy and Terms of Service apply.