Beitian BT-208 Full-Frequency GNSS Survey Antenna for RTK Measurement, IP67, TNC-K, Multi-Constellation
Beitian BT-208 Full-Frequency GNSS Survey Antenna for RTK Measurement, IP67, TNC-K, Multi-Constellation
Beitian
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Overview
The Beitian BT-208 is a full-frequency, multi-constellation GNSS survey antenna designed for RTK measurement, intelligent inspection, and deformation monitoring. It features a multi-feed-point design with a fully symmetrical antenna structure to help maintain a stable phase center and reduce antenna-pair measurement error. High gain and low VSWR improve reception, including low-elevation signals in challenging environments.
The antenna uses an anti-multipath choke plate and an anti-surge design to help suppress out-of-band strong interference for reliable operation. It is rated IP67 for outdoor use.
Key Features
- Full-frequency GNSS reception across multiple systems (GPS, BDS, GLONASS, Galileo, SBAS, QZSS, IRNSS, L-Band)
- Multi-feed-point, fully symmetrical antenna structure for stable phase center
- Low VSWR and improved low-elevation signal reception
- Anti-multipath choke plate and anti-surge design to suppress strong out-of-band interference
- IP67 waterproof grade
Specifications
| Model | BT-208 |
| Frequency range / systems | 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 L-Band |
| Gain (dBi) | 5.5 |
| Antenna AR (dB) | <=3.0 |
| VSWR | <=2.0 |
| Phase center error (mm) | +/-2 |
| Polarization | Right-hand circular polarization |
| Port impedance | 50Ω |
| Horizontal coverage angle | 360° |
| LNA gain (dB) | 38+/-2 |
| Noise figure (dB) | <=2.0 |
| Passband fluctuation (dB) | +/-2 |
| Operating voltage (V) | 3.0-12.0 |
| Operating current (mA) | <=45 |
| Differential propagation delay (ns) | <=5 |
| Connector type | TNC-K |
| Radome material | ABS |
| Antenna size (mm) | Φ100*55 |
| Dimension tolerance | Diameter: 100.00+/-0.3 mm Height: 55.00+/-0.5 mm |
| Weight (g) | 230 |
| Mounting method | spiral |
| Mounting holes | 5/8"-11UNC deep 19 |
| Operating temperature (°C) | -40 to +85 |
| Storage temperature (°C) | -55 to +85 |
| Relative humidity | Up to 95% |
| Waterproof grade | IP67 |
| Environmentally friendly | ROHS |
What's Included
- BT-208 antenna x1
Additional packages are shown for reference, including: Antenna BT-M90SD (TNC 3-5 m feeder package) x1; Antenna BT-M90SD (SMA 3-5 m feeder package) x1; Antenna BT-M110SLD (TNC 3-5 m feeder package) x1; Antenna BT-M110SLD (SMA 3-5 m feeder package) x1. Wire length joints can be customized.
For package selection and cable-length customization support, contact [email protected] or visit https://rcdrone.top/.
Applications
- Geodesy, land surveying, and mapping
- Waterway surveying and mapping
- Precision agriculture
- Marine and oceanographic surveying
- Inspection measurement and deformation monitoring
Details
Built for RTK measurement and monitoring tasks, the BT-208 focuses on stable phase-center performance and reliable multi-band reception.
Full-frequency, multi-constellation tracking supports surveying, mapping, agriculture, and marine workflows that depend on consistent satellite lock.
Key electrical and mechanical specs are summarized for quick integration into RTK, inspection, and deformation-monitoring systems.
Multi-frequency reception helps reduce common issues like poor positioning accuracy and unstable trajectories in complex environments.
High gain, low noise amplification, and IP67 sealing help maintain dependable reception in demanding outdoor conditions.
Durable radome materials and a low-noise amplifier design support stable signal output for precise positioning.
Compact Φ100×55 mm form factor fits common survey mounts while supporting a wide 3.3–12 V operating range.
Standard TNC-K connectivity and a 5/8"-11 UNC mount make installation straightforward on survey poles and fixed stations.
A clear breakdown of quality control, testing, customization support, and service expectations versus typical single-frequency options.
Vehicle-mount use cases include training fleets and autonomous platforms that need consistent positioning in motion.
Package contents focus on the BT-208 antenna, with optional feeder-package accessories available depending on connector needs.
Optional feeder packages can be selected with SMA or TNC connectors, and cable length can be customized on request.
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