Beitian BT-208D GNSS Antenna 38±2dB LNA, 4-Star Full-Band, MCX-JW for RTK Vehicle & Agriculture
Beitian BT-208D GNSS Antenna 38±2dB LNA, 4-Star Full-Band, MCX-JW for RTK Vehicle & Agriculture
Beitian
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Overview
The Beitian BT-208D GNSS antenna is a four-star full-band measurement antenna designed for RTK/high-precision positioning use cases such as vehicles and agricultural machinery. It supports multi-system satellite signals and provides 360° horizontal coverage with compact sizing for easier installation.
Key Features
- Four-star full-band measurement antenna (BT-208D)
- Multi-system compatible frequency support: GPS / BDS / GLONASS / GALILEO / SBAS / QZSS / IRNSS / L-Band
- LNA gain: 38±2 dB
- Gain: ≥4 dBi
- 360° horizontal coverage angle
- Right-hand circular polarization
- MCX-JW connector with RG178 cable
- Ceramic material (as stated)
- Design notes (as stated): multi-feed point & symmetrical antenna structure; multipath suppression choke ring; surge protection design
Specifications
| Model | BT-208D |
| Frequency range / working mode | 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) | ≥4 |
| LNA gain (dB) | 38±2 |
| Noise figure (dB) | ≤2.0 |
| Passband fluctuation (dB) | ±1.5 |
| Antenna AR (dB) | ≤3.0 |
| VSWR (antenna) | ≤1.5 |
| Output VSWR | ≤2.0 |
| VSWR (electrical) | ≤2.0 |
| Phase center error (mm) | ±2 |
| Polarization | Right-hand circular polarization |
| Port impedance | 50Ω |
| Horizontal coverage angle | 360° |
| Operating voltage (V) | 3.0-12.0 |
| Operating current (mA) | ≤60 |
| Connector type | MCX-JW |
| Cable | RG178 |
| Cable length | 10 cm |
| Antenna size (mm) | Φ80*22.4 |
| Antenna weight (g) | 120 |
| Operating temperature | -40°C to +85°C |
| Relative humidity | Up to 95% |
| Dimension drawing (mm) | Ø80 ±0.3; Ø73.5 ±0.1; Ø61; Ø50; height 22.4 ±0.3; 4-Ø3.2; 4-0.5 MAX; 10; 5.0; 62.5; 10.4; cable length 100 ±5 |
Applications
- Vehicle tracking and positioning
- Precision agriculture / agricultural machinery positioning
- Geodetic surveying and hydrographic surveying
- Logistics and transportation positioning systems
For product selection or integration support, contact [email protected] or visit https://rcdrone.top/.
What's Included
- Four-star full-band measurement antenna BT-208D ×1
Details
Designed for RTK and other high-precision positioning tasks, the BT-208D combines full-band coverage with a compact form for easier installs.
Core electrical specs are provided for integration planning, including supported GNSS bands, LNA gain, and power requirements.
Mechanical drawings help confirm fitment for vehicle or machinery mounting, including diameter, height, and hole placement.
A multi-feed, symmetrical structure is used to support stable reception and broad frequency coverage for multi-system GNSS work.
Multi-constellation compatibility is paired with a 38±2 dB LNA and 3–12 V operating range to support stable output in the field.
Compact sizing (approx. Ø80 × 22.4 mm) suits tight installations while keeping the antenna profile low.
Build details include a ceramic element, fixed mounting points, and an MCX-JW connector with RG178 cable for straightforward integration.
Performance and support comparisons are provided to help evaluate a measurement-grade antenna versus basic single-frequency options.
Typical applications include precision agriculture and mobile platforms that benefit from stable GNSS positioning.
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