GNSS receivers and radios
Trimble R12i
GNSS rover with calibration-free, magnetically immune tilt compensation and the ProPoint engine.

TrimbleGNSS receivers and radios
The Trimble Zephyr 3 Geodetic is a geodetic GNSS antenna for CORS reference stations and real-time networks. Its Trimble Stealth resistive ground plane absorbs multipath, its phase centre repeats within 1 mm, and it is used in IGS reference frame networks.
Made to order, 2–3 weeks
| Purpose | CORS, real-time networks |
|---|---|
| Phase centre repeatability | < 1 mm |
| Gain | 50 dB ±2 dB |
| Weight | 1.36 kg |
| Size | Ø34.3 × 9.3 cm |
| Signals | L1/L2/L5, G1/G2/G3, E1/E5ab/E6, B1/B2/B3 |
| SBAS and corrections | WAAS, EGNOS, QZSS, GAGAN, MSAS, OmniSTAR, RTX |
| Tracking elevation | 0° (practical < 3°) |
| Phase centre accuracy | 2 mm or better; eccentricity 2 mm maximum |
| LNA signal margin | 13 dB |
| Polarization | Enhanced right-hand circular (LHCP rejection ≥ 20 dB); axial ratio 2 dB at zenith |
| Power | 3.5–20 V DC, 125 mA maximum, 440–700 mW |
| Connector | TNC female |
| Mount | 5/8"-11 female |
| Operating and storage temperature | −55 to +85 °C |
| Humidity | 100%, fully sealed |
| Shock and vibration | 2 m drop; MIL-STD-810-F |
| Radome | 46291-00 (optional) |
Topographic maps, orthophotos, 3D models, survey and stakeout.
Cadastral mapping and land boundary surveys.
Site surveys, progress tracking and stakeout for roads and buildings.
Specifications and features translated into Mongolian, as a PDF.
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