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- T20 vs eRTK30
ComNav T20 vs eSurvey eRTK30
What T20 does better (2) and where eRTK30 wins (2) — every spec side by side.
Dimensions
Size comparison
T20eRTK30
| T20 | eRTK30 | Difference | |
|---|---|---|---|
| Height | 48 mm | 74 mm | −26 mm |
| Width | 149 mm | 134 mm | +15 mm |
| Weight | 680 g | 903 g | −223 g |
Drawn to the same scale from the official dimensions (front and side).
Why is T20 better than eRTK30?
- Weight680 g vs 903 g+33%
- Tracking channels1,590 vs 1,408+13%
Why is eRTK30 better than T20?
- Battery life12 h vs 13 h+8%
- Satellite systems supported5 vs 6+20%
Specifications
Side by side
| Satellite positioning | ||
| Satellite systems | GPS, GLONASS, Galileo, BeiDou, QZSS | GPS, GLONASS, Galileo, BeiDou, QZSS, NavIC (IRNSS) |
| Satellite systems supported | 5 | 6 |
| Multi-band GNSS (L1 + L5/L2) | — | No |
| Frequency bands | — | L-band |
| Tracking channels | 1,590 | 1,408 |
| SBAS (WAAS / EGNOS) | Yes | Yes |
| RTK positioning | — | Yes |
| RTK accuracy (horizontal) | — | 8 mm |
| Static accuracy (horizontal) | 3 mm | — |
| Tilt compensation (IMU) | Yes | — |
| Correction sources | NTRIP (internet), UHF radio, Cellular modem, L-band / PPP, SBAS | NTRIP (internet), UHF radio, Cellular modem, L-band / PPP, SBAS |
| Built-in UHF radio | Yes | Yes |
| L-band / PPP corrections | Yes | Yes |
| Maps & navigation | ||
| Internal storage | 8 GB | 8 GB |
| Connectivity & safety | ||
| Bluetooth | Yes | Yes |
| Cellular modem (4G / LTE) | Yes | Yes |
| USB-C | Yes | Yes |
| Camera | — | Yes |
| Battery & power | ||
| Battery life | 12 h | 13 h |
| Battery capacity | — | 13,400 mAh |
| Power source | — | Built-in rechargeable |
| External power input | 5/9V | Type-C(PD 12V/1.5A) |
| Build & durability | ||
| Protection rating | IP67 | IP67 |
| Water protection (IPx) | IPx7 | IPx7 |
| Drop resistance | 2 m | 2 m |
| Operating temperature (min) | -30 °C | -30 °C |
| Operating temperature (max) | 65 °C | 65 °C |
| Weight | 680 g | 903 g |
| Width | 149 mm | 134 mm |
| Height | 48 mm | 74 mm |
| Housing material | Magnesium aluminum alloy | — |
