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Emlid Reach RS4: No Frills, Just Fixes
The Emlid Reach RS4 is engineered for professionals who demand unwavering precision. This multi-band RTK GNSS receiver locks onto an extensive satellite constellation, delivering centimetre-accurate positioning with remarkable consistency. Built without unnecessary frills, it focuses entirely on what matters: reliable, repeatable fixes in challenging conditions. The receiver compensates for pole tilt and environmental interference, ensuring dependable data acquisition across demanding survey and mapping applications. When accuracy and reliability are non-negotiable, the RS4 delivers..
Why You Want It
Purpose-built for professionals who prioritise substance over superfluity. The Reach RS4 shares the core architecture of premium alternatives—identical multi-band GNSS processing, rapid tilt correction, and rugged IP68-rated magnesium construction. You're accessing the same field-proven performance at a considerably lower investment. This receiver excels where it matters: delivering consistent, accurate measurements without unnecessary features that complicate workflows. For surveyors and mapping specialists focused on results rather than bells and whistles, the RS4 represents exceptional value without compromise.
Features and Highlights
- Fast Tilt Compensation: A next-gen IMU that initialises in seconds. Measure corner points and stake out at awkward angles without obsessively checking a bubble level. Life's too short.
- All-Band GNSS Support: Tracks L1/L2/L5/L6 signals from every constellation worth mentioning. It gets a fix in dense woods and urban canyons where your phone can't even get a single bar of signal.
- Built Like a Brick... Outhouse: The IP68-rated magnesium alloy body is designed to handle a proper British Tuesday—sun, rain, mud, and then a bit more rain. It's tough enough for any job site.
- All-Day (and Then Some) Battery: With 16 hours of life as an RTK rover on a single charge, the RS4 will outlast your motivation to keep working. It charges via a standard USB-C, so you can top it up with a power bank if you're really pushing it.
Reach RS4 – Specifications
Mechanical
- Dimensions: 128.6 × 128.6 × 99.3 mm
- Weight: 920 g
- Operating temperature: –40 to +65 °C
- Ingress protection: IP68
Electrical
- Autonomy: 16 hrs as RTK rover with tilt
- Battery: Li-Ion 5000 mAh, 7.2 V (36 Wh)
- Charging: USB Type-C (PD) – 5V/3A, 9V/3A, 12V/3A, 15V/3A
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 compensation: RTK + 2 mm + 0.3 mm/°
- Convergence time: ~5 s (typical)
Connectivity
- LoRa radio (up to 1W): 868/915 MHz, 0.1 W, up to 8 km
- UHF radio (up to 2W): 410–470 MHz, TRIMTALK 450S**
- LTE modem: Global bands (FDD-LTE, TD-LTE, UMTS, GSM)
- SIM card: Nano-SIM
- Wi-Fi: 802.11 a/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
- Signals tracked: 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, L5-SPS)
- Number of channels: 672
- Update rate: up to 10 Hz
**TRIMTALK is a trademark of Trimble Inc.
What’s in the Box*
- 1x Emlid Reach RS4 Receiver
- 1x LoRa Antenna
- 1x UHF Antenna
- 1x USB Type-C Cable
- 1x Carrying Case with Strap (for carrying, obviously)
*subject to change with final release
