Beitian BT-4N04A RTK Full-Constellation Full-Band GNSS Reference Station Antenna IP67 for Mapping
Beitian BT-4N04A RTK Full-Constellation Full-Band GNSS Reference Station Antenna IP67 for Mapping
Beitian
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Overview
The Beitian BT-4N04A is a GNSS base station antenna designed for high-precision RTK reference station use with full-constellation, full-band reception. It supports BDS (BD) B1/B2/B3, GPS L1/L2/L5, GLONASS G1/G2, and Galileo E1/E2/E5a/E5b, with a sealed outdoor structure and IP67 waterproof grade for long-term field deployment in mapping and precision agriculture workflows.
Key Features
- Four-system, full-frequency reception: BD B1/B2/B3, GPS L1/L2/L5, GLONASS G1/G2, Galileo E1/E2/E5a/E5b
- Right-hand circular polarization (RHCP)
- LNA gain: 50±2 dB; noise figure: <2 dB
- VSWR: ≤2.0; in-band flatness: ±2 dB
- Phase center error: ±2 mm; differential delay: ±2 ns
- Operating voltage: 3.3V-12V (3.3-12 VDC)
- Connector type: TNC-K; output impedance: 50Ω
- IP67 waterproof grade
- Wide beam coverage: bearing 0°-360°, pitch 10°-90°
- Threaded mounting: 5/8" × 11 (inch) threaded mounting holes
Specifications
BT-4N04A
| Working mode | BD B1/B2/B3; GPS L1/L2/L5; GLONASS G1/G2; Galileo E1/E2/E5a/E5b |
| Frequency range (MHz) | BD B1/B2/B3; GPS L1/L2/L5; GLONASS G1/G2; Galileo E1/E2/E5a/E5b |
| Polarization | Right-hand circular polarization |
| Antenna beam range | Bearing: 0°-360°; Pitch: 10°-90° |
| Gain (dBi) | 6 |
| Antenna AR (dB) | ≤3.0 |
| Phase center error (mm) | ±2 |
| LNA gain (dB) | 50±2 |
| Noise figure (dB) | <2 |
| VSWR | ≤2.0 |
| In-band flatness (dB) | ±2 |
| Differential delay (ns) | ±2 |
| Output impedance | 50Ω |
| Supply/Operating voltage | 3.3V-12V |
| Supply/Operating current | ≤50mA |
| Connector type | TNC-K |
| Waterproof grade | IP67 |
| Size | Φ379.5×296.5mm |
| Installation method | 5/8" × 11 (inch) threaded mounting holes |
| Operating temperature | -45°C ~ +85°C |
| Storage temperature | -55°C ~ +85°C |
| Humidity | 95% non-condensing |
BT-184 (option)
| Working mode | GPS L1/L2/L5; GLONASS L1/L2/L3; GALILEO E1/E5a/E5b/E6; BDS B1/B2/B3; QZSS L1/L2/L5/L6; IRNSS L5; SBAS L1/L5; L-Band |
| Gain | 50±2dB |
| Noise figure | ≤2 dB |
| Output VSWR | ≤2.0 |
| In-band flatness | ±2dB |
| Output impedance | 50Ω |
| Supply voltage | 3.3-12V |
| Supply current | ≤60mA |
| Connector type | TNC-K |
| Size | Φ184×144 mm |
| Weight | ≤2kg |
| Installation method | 5/8" × 11 (inch) threaded mounting holes |
| Operating temperature | -45°C ~ +85°C |
| Storage temperature | -55°C ~ +85°C |
Applications
- Land surveying and mapping
- Waterway surveying and mapping
- Precision agriculture
- Base station positioning
- Deformation monitoring
- Geological hazard monitoring
Notes
- Available model options: BT-4N04A and BT-184.
- Documentation referenced: “BT-4N04A GNSS Antenna Datasheet” (Revision: 5.51; Date: 2026.03).
For pre-sales selection help (BT-4N04A vs BT-184) and integration guidance with GNSS receivers, contact [email protected] or visit https://rcdrone.top/.
Details
Designed for RTK base stations, the BT-4N04A supports full-constellation, full-band GNSS reception for stable mapping and surveying work.
Quick reference to the official BT-4N04A GNSS antenna datasheet for model identification and documentation version control.
Key electrical specs and mechanical dimensions help confirm fitment, including the standard 5/8" × 11 threaded mounting interface.
Built for outdoor deployments with IP67 sealing, wide input voltage support, and amplified GNSS signal performance.
The sealed housing and rugged profile support long-term field installation where dust and heavy rain are expected.
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