Overview
The Beitian BT-243 is a multi-constellation, full-frequency RTK GNSS measurement antenna designed for high-sensitivity satellite navigation reception in surveying and vehicle/automotive installation scenarios. It features high gain, miniaturized form factor, multi-system compatibility, and high reliability to meet demanding positioning applications.
Key Features
- Multi-constellation, full-frequency GNSS support: GPS, BDS, GLONASS, GALILEO, SBAS, QZSS, IRNSS
- 360° horizontal coverage angle
- Right-hand circular polarization (RHCP)
- Integrated low-noise amplifier (LNA)
- Double-sided tape installation method
Specifications
| Frequency range | GPS L1/L2/L5; BDS B1I/B2I/B3I/B1C/B2a/B2b; GLONASS L1/L2/L3; GALILEO E1/E5a/E5b/E6; SBAS L1/L5; QZSS L1/L2/L5/L6; IRNSS L5 |
| Gain | 4 dBi |
| Antenna AR | ≤ 3.0 dB |
| Horizontal coverage angle | 360° |
| Phase center error | ± 2 mm |
| VSWR (antenna) | ≤ 2 |
| Polarization | Right-hand circular polarization |
| Port impedance | 50 Ω |
| LNA gain | 36 ± 2 dB |
| LNA noise figure | ≤ 2 dB |
| VSWR (LNA) | ≤ 2.0 |
| In-band flatness | ± 2 dB |
| Operating voltage | 3.3-12 V |
| Operating current | ≤ 45 mA |
| Differential propagation delay | ≤ 5 ns |
| Connector type | TNC-K |
| Installation method | Double-sided tape |
| Antenna size | Φ122 * 24.7 mm |
| Product dimensions (drawing) | Diameter: φ122 ± 0.3 mm; Height: 24.7 ± 0.5 mm |
| Operating temperature | -40 to +85 °C |
| Storage temperature | -55 to +85 °C |
| Wet degree | 95% non-condensing |
Applications
- Land surveying
- Waterway surveying
- Precision agriculture
- Marine surveying
- Use with a variety of satellite navigation receivers (based on application conditions)
For pre-sales compatibility questions or integration support, contact [email protected] or visit https://rcdrone.top/.
Details

Full-frequency, multi-constellation reception with RHCP polarization and an integrated LNA supports high-sensitivity RTK positioning.
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