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- M20 vs i89
Bynav M20 vs CHCNAV i89
What M20 does better (3) and where i89 wins (1) — every spec side by side.
Why is M20 better than i89?
- Satellite systems supported6 vs 5+20%
- Operating temperature (max)85 °C vs 65 °C+31%
- Tracking channels1,507 vs 1,408+7%
Why is i89 better than M20?
- RTK accuracy (horizontal)10 mm vs 8 mm+25%
Specifications
Side by side
| Satellite positioning | ||
| Satellite systems | GPS, GLONASS, Galileo, BeiDou, QZSS, NavIC (IRNSS) | GPS, GLONASS, Galileo, BeiDou, QZSS |
| Satellite systems supported | 6 | 5 |
| Multi-band GNSS (L1 + L5/L2) | — | Yes |
| Frequency bands | — | L1, L2, L5, E1, E5a, E5b, E6, B1, B2, B3 |
| Tracking channels | 1,507 | 1,408 |
| SBAS (WAAS / EGNOS) | Yes | Yes |
| RTK positioning | Yes | Yes |
| RTK accuracy (horizontal) | 10 mm | 8 mm |
| RTK accuracy (vertical) | — | 15 mm |
| Tilt compensation (IMU) | Yes | Yes |
| Dual-antenna heading | Yes | — |
| Correction sources | L-band / PPP, SBAS | NTRIP (internet), UHF radio, SBAS |
| Built-in UHF radio | — | Yes |
| L-band / PPP corrections | Yes | — |
| Raw data logging (RINEX) | — | Yes |
| Maps & navigation | ||
| Internal storage | — | 8 GB |
| Connectivity & safety | ||
| Wi-Fi | — | Yes |
| Bluetooth | — | Yes |
| USB-C | — | Yes |
| Camera | — | Yes |
| Battery & power | ||
| Battery life | — | 16 h |
| External power input | 5V; 3.3V | 5 V / 2 A |
| Build & durability | ||
| Protection rating | — | IP68 |
| Water protection (IPx) | — | IPx8 |
| MIL-STD-810 | — | Yes |
| Operating temperature (min) | -40 °C | -40 °C |
| Operating temperature (max) | 85 °C | 65 °C |
| Weight | — | 750 g |
| Width | 22 mm | — |
| Height | 17 mm | — |
| Housing material | Aluminium | — |
