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- M300 Plus vs AsteRx SB3 Pro+
ComNav M300 Plus vs Septentrio AsteRx SB3 Pro+
What M300 Plus does better (4) and where AsteRx SB3 Pro+ wins (3) — every spec side by side.
vs
3.6Positioning6.6
9.4Maps & navigation8.8
3.1Durability8.4
Dimensions
Size comparison
M300 PlusAsteRx SB3 Pro+
| M300 Plus | AsteRx SB3 Pro+ | Difference | |
|---|---|---|---|
| Height | 67 mm | 118 mm | −51 mm |
| Width | 176 mm | 102 mm | +74 mm |
| Weight | 2,000 g | 497 g | +1,503 g |
Drawn to the same scale from the official dimensions (front and side).
Why is M300 Plus better than AsteRx SB3 Pro+?
- Internal storage32 GB vs 16 GB2×
- Operating temperature (min)-40 °C vs -30 °C+-25%
- Operating temperature (max)80 °C vs 65 °C+23%
- Tracking channels574 vs 544+6%
Why is AsteRx SB3 Pro+ better than M300 Plus?
- Weight2,000 g vs 497 g4×
- Water protection (IPx)IPx7 vs IPx8+14%
- Satellite systems supported4 vs 6+50%
Specifications
Side by side
| Satellite positioning | ||
| Satellite systems | GPS, GLONASS, Galileo, BeiDou | GPS, GLONASS, Galileo, BeiDou, QZSS, NavIC (IRNSS) |
| Satellite systems supported | 4 | 6 |
| Multi-band GNSS (L1 + L5/L2) | Yes | — |
| Frequency bands | L1, L2, L5, E1, E5a, E5b, B1, B2, B3 | — |
| Tracking channels | 574 | 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), Cellular modem, L-band / PPP, SBAS | L-band / PPP, SBAS |
| L-band / PPP corrections | Yes | Yes |
| Raw data logging (RINEX) | Yes | — |
| Maps & navigation | ||
| Internal storage | 32 GB | 16 GB |
| Connectivity & safety | ||
| Cellular modem (4G / LTE) | Yes | — |
| Battery & power | ||
| External power input | — | 5-36 VDC |
| Build & durability | ||
| Protection rating | IP67 | IP68 |
| Water protection (IPx) | IPx7 | IPx8 |
| MIL-STD-810 | — | Yes |
| Drop resistance | 1 m | — |
| Operating temperature (min) | -40 °C | -30 °C |
| Operating temperature (max) | 80 °C | 65 °C |
| Weight | 2,000 g | 497 g |
| Width | 176 mm | 102 mm |
| Height | 67 mm | 118 mm |
| Depth | 225 mm | — |
| Housing material | Magnesium-aluminium | Ruggedized enclosure IP68 |
