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- SL900 vs GCX3
SatLab SL900 vs Sokkia GCX3
What SL900 does better (3) and where GCX3 wins (3) — every spec side by side.
Dimensions
Size comparison
SL900GCX3
| SL900 | GCX3 | Difference | |
|---|---|---|---|
| Height | 95 mm | 197 mm | −102 mm |
| Width | 170 mm | 47 mm | +123 mm |
| Weight | 1,200 g | 440 g | +760 g |
Drawn to the same scale from the official dimensions (front and side).
Why is SL900 better than GCX3?
- RTK accuracy (horizontal)8 mm vs 10 mm+25%
- Internal storage16 GB vs 8 GB2×
- Operating temperature (min)-40 °C vs -20 °C+-50%
Why is GCX3 better than SL900?
- Weight1,200 g vs 440 g2.7×
- Battery life9 h vs 10 h+11%
- Satellite systems supported4 vs 5+25%
Specifications
Side by side
| Satellite positioning | ||
| Satellite systems | GPS, GLONASS, Galileo, BeiDou | GPS, GLONASS, Galileo, BeiDou, QZSS |
| Satellite systems supported | 4 | 5 |
| Multi-band GNSS (L1 + L5/L2) | Yes | Yes |
| Frequency bands | L1, L2, L5, E1, E5a, E5b, E6, B1, B2, B3 | L1, L2, E1, B1, B2 |
| Tracking channels | 555 | — |
| GNSS engine | Trimble BD990 | — |
| SBAS (WAAS / EGNOS) | Yes | Yes |
| RTK positioning | Yes | Yes |
| RTK accuracy (horizontal) | 8 mm | 10 mm |
| Tilt compensation (IMU) | Yes | — |
| Correction sources | NTRIP (internet), UHF radio, Cellular modem, L-band / PPP, SBAS | SBAS |
| Built-in UHF radio | Yes | — |
| L-band / PPP corrections | Yes | — |
| Raw data logging (RINEX) | Yes | — |
| Maps & navigation | ||
| Internal storage | 16 GB | 8 GB |
| Connectivity & safety | ||
| Bluetooth | Yes | Yes |
| Cellular modem (4G / LTE) | Yes | — |
| NFC | Yes | — |
| Battery & power | ||
| Battery life | 9 h | 10 h |
| Battery capacity | 5,000 mAh | — |
| External power input | 6-28V DC external power input(5-pin port) with over-discharge protection | Service port (shared with USB2.0 communication) |
| Build & durability | ||
| Protection rating | IP67 | IP67 |
| Water protection (IPx) | IPx7 | IPx7 |
| Drop resistance | 2 m | — |
| Operating temperature (min) | -40 °C | -20 °C |
| Operating temperature (max) | 65 °C | — |
| Weight | 1,200 g | 440 g |
| Width | 170 mm | 47 mm |
| Height | 95 mm | 197 mm |
| Depth | — | 47 mm |









