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- A300 vs AsteRx-U3 Marine
ComNav A300 vs Septentrio AsteRx-U3 Marine
What A300 does better (3) and where AsteRx-U3 Marine wins (1) — every spec side by side.
vs
8.4Positioning7.1
5.9Connectivity & safety5.9
7.8Durability2.4
Dimensions
Size comparison
A300AsteRx-U3 Marine
| A300 | AsteRx-U3 Marine | Difference | |
|---|---|---|---|
| Height | 126 mm | 45 mm | +81 mm |
| Width | 250 mm | 245 mm | +5 mm |
| Depth | 250 mm | 157 mm | +93 mm |
| Weight | 2,000 g | 1,500 g | +500 g |
Drawn to the same scale from the official dimensions (front and side).
Why is A300 better than AsteRx-U3 Marine?
- Tracking channels965 vs 544+77%
- Operating temperature (min)-40 °C vs -30 °C+-25%
- Operating temperature (max)75 °C vs 65 °C+15%
Why is AsteRx-U3 Marine better than A300?
- Weight2,000 g vs 1,500 g+33%
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 |
| Tracking channels | 965 | 544 |
| SBAS (WAAS / EGNOS) | Yes | Yes |
| RTK positioning | Yes | — |
| RTK accuracy (horizontal) | 8 mm | — |
| Static accuracy (horizontal) | 2.5 mm | — |
| Dual-antenna heading | — | Yes |
| Correction sources | NTRIP (internet), UHF radio, Cellular modem, SBAS | NTRIP (internet), UHF radio, Cellular modem, L-band / PPP, SBAS |
| Built-in UHF radio | Yes | Yes |
| L-band / PPP corrections | — | Yes |
| Maps & navigation | ||
| Internal storage | — | 16 GB |
| Connectivity & safety | ||
| Wi-Fi | — | Yes |
| Bluetooth | Yes | Yes |
| Cellular modem (4G / LTE) | Yes | Yes |
| USB-C | Yes | — |
| Battery & power | ||
| External power input | 6-36 | — |
| Build & durability | ||
| Protection rating | IP68 | — |
| Water protection (IPx) | IPx8 | — |
| MIL-STD-810 | — | Yes |
| Drop resistance | 2 m | — |
| Operating temperature (min) | -40 °C | -30 °C |
| Operating temperature (max) | 75 °C | 65 °C |
| Weight | 2,000 g | 1,500 g |
| Width | 250 mm | 245 mm |
| Height | 126 mm | 45 mm |
| Depth | 250 mm | 157 mm |
| Housing material | FRP cover & aluminum alloy base | Ruggedized enclosure IP68 |
