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  3. Reach RS4 Pro vs AsteRx SB3 Pro+

Emlid Reach RS4 Pro vs Septentrio AsteRx SB3 Pro+

What Reach RS4 Pro does better (1) and where AsteRx SB3 Pro+ wins (0) — every spec side by side.

Emlid Reach RS4 Pro
Emlid · 2025Reach RS4 Pro
9.3Score
1 advantage≈ $4,600
Higher score
vs
Septentrio AsteRx SB3 Pro+
Septentrio · 2022AsteRx SB3 Pro+
9.3Score
0 advantages
9.7Positioning6.6
9.2Durability8.4

Why is Reach RS4 Pro better than AsteRx SB3 Pro+?

  1. Operating temperature (min)-40 °C vs -30 °C+-25%

Why is AsteRx SB3 Pro+ better than Reach RS4 Pro?

AsteRx SB3 Pro+ has no measurable advantages in this pair.

Specifications

Side by side

Emlid Reach RS4 ProEmlid Reach RS4 Pro≈ $4,6009.3
Satellite positioning
Satellite systemsGPS, GLONASS, Galileo, BeiDou, QZSS, NavIC (IRNSS)GPS, GLONASS, Galileo, BeiDou, QZSS, NavIC (IRNSS)
Satellite systems supported66
Multi-band GNSS (L1 + L5/L2)Yes—
Frequency bandsL1, L2, L5, E1, E5a, E6, B1, B2, B3—
Tracking channels—544
SBAS (WAAS / EGNOS)—Yes
RTK positioningYes—
RTK accuracy (horizontal)7 mm—
Tilt compensation (IMU)Yes—
Dual-antenna heading—Yes
Correction sourcesNTRIP (internet), UHF radio, LoRa radioL-band / PPP, SBAS
Built-in UHF radioYes—
L-band / PPP corrections—Yes
Maps & navigation
Internal storage—16 GB
Connectivity & safety
USB-CYes—
CameraYes—
Battery & power
Battery life16 h—
External power input—5-36 VDC
Build & durability
Protection ratingIP68IP68
Water protection (IPx)IPx8IPx8
MIL-STD-810—Yes
Operating temperature (min)-40 °C-30 °C
Operating temperature (max)65 °C65 °C
Weight—497 g
Width—102 mm
Height—118 mm
Housing materialMagnesium alloyRuggedized enclosure IP68
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