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- AsteRx-U3 Marine vs R780
Septentrio AsteRx-U3 Marine vs Trimble R780
What AsteRx-U3 Marine does better (2) and where R780 wins (2) — every spec side by side.
vs
7.1Positioning6.8
8.8Maps & navigation8.4
5.9Connectivity & safety5.9
2.4Durability6.9
Dimensions
Size comparison
AsteRx-U3 MarineR780
| AsteRx-U3 Marine | R780 | Difference | |
|---|---|---|---|
| Height | 45 mm | 130 mm | −85 mm |
| Width | 245 mm | 139 mm | +106 mm |
| Weight | 1,500 g | 1,550 g | −50 g |
Drawn to the same scale from the official dimensions (front and side).
Why is AsteRx-U3 Marine better than R780?
- Internal storage16 GB vs 9 GB+78%
- Weight1,500 g vs 1,550 g+3%
Why is R780 better than AsteRx-U3 Marine?
- Operating temperature (min)-30 °C vs -40 °C+-25%
- Tracking channels544 vs 672+24%
Specifications
Side by side
| Satellite positioning | ||
| Satellite systems | GPS, GLONASS, Galileo, BeiDou, QZSS, NavIC (IRNSS) | GPS, GLONASS, Galileo, BeiDou, QZSS, NavIC (IRNSS) |
| Satellite systems supported | 6 | 6 |
| Multi-band GNSS (L1 + L5/L2) | — | Yes |
| Frequency bands | — | L1, L2, L5, E1, E5a, E5b, E6, B1, B2, B3 |
| Tracking channels | 544 | 672 |
| GNSS engine | — | Trimble Maxwell 7 |
| SBAS (WAAS / EGNOS) | Yes | Yes |
| RTK positioning | — | Yes |
| RTK accuracy (horizontal) | — | 8 mm |
| Static accuracy (horizontal) | — | 3 mm |
| Tilt compensation (IMU) | — | Yes |
| Dual-antenna heading | Yes | — |
| Correction sources | NTRIP (internet), UHF radio, Cellular modem, L-band / PPP, SBAS | NTRIP (internet), UHF radio, L-band / PPP, SBAS |
| Built-in UHF radio | Yes | Yes |
| L-band / PPP corrections | Yes | Yes |
| Maps & navigation | ||
| Internal storage | 16 GB | 9 GB |
| Connectivity & safety | ||
| Wi-Fi | Yes | Yes |
| Bluetooth | Yes | Yes |
| Cellular modem (4G / LTE) | Yes | — |
| Battery & power | ||
| Battery life | — | 6 h |
| Build & durability | ||
| Protection rating | — | IP68 |
| Water protection (IPx) | — | IPx8 |
| MIL-STD-810 | Yes | Yes |
| Operating temperature (min) | -30 °C | -40 °C |
| Operating temperature (max) | 65 °C | 65 °C |
| Weight | 1,500 g | 1,550 g |
| Width | 245 mm | 139 mm |
| Height | 45 mm | 130 mm |
| Depth | 157 mm | — |
| Housing material | Ruggedized enclosure IP68 | Marine Aluminium |









