Beitian BT-47N 3.3-12V RTK Multi-Frequency GNSS Survey Antenna GPS/GLONASS/BDS/Galileo TNC-K
Beitian BT-47N 3.3-12V RTK Multi-Frequency GNSS Survey Antenna GPS/GLONASS/BDS/Galileo TNC-K
Beitian
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Overview
The Beitian BT-47N is a multi-frequency GNSS measurement/survey antenna designed for use with a variety of satellite navigation receivers. It supports BDS, GPS, GLONASS, and Galileo signals and is specified for applications such as geodetic surveying and mapping, waterway mapping, precision agriculture, and marine/oceanographic surveying.
Key Features
- Receives multi-system, multi-frequency GNSS signals: BDS B1/B2/B3, GPS L1/L2, GLONASS L1/L2, GALILEO E1/E5b
- Operating voltage: 3.3-12.0 V
- Low noise figure: ≤ 2 dB
- Low VSWR: ≤ 2 (also listed as input VSWR ≤ 2.0)
- Right-hand circular polarization (RHCP)
- IP67 waterproof rating
- Mechanical mount: 5/8"-11 UNC thread, thread depth 20 mm
- Includes a waterproof pressure balancing valve
Specifications
| Model | BT-47N |
| Supported GNSS / Bands | BDS B1/B2/B3; GPS L1/L2; GLONASS L1/L2; GALILEO E1/E5b |
| Antenna gain | 4.5 dBi |
| Antenna AR | ≤ 3.0 dB |
| Phase center error | ± 2 mm |
| Polarization | Right-hand circular polarization |
| Port/output impedance | 50 ohm |
| VSWR | ≤ 2 |
| Operating voltage | 3.3-12.0 V |
| Operating/supply current | ≤ 45 mA |
| LNA gain | 40 ± 2 dB |
| Noise figure | ≤ 2 dB |
| Connector type | TNC-K |
| Antenna size | Dia 100 x 47 mm |
| Operating temperature | -40 to +70 C |
| Storage temperature | -55 to +85 C |
| Waterproof rating | IP67 |
| Mount thread | 5/8"-11 UNC, thread depth 20 mm |
| Label (as printed) | Beitian; MODEL: BT-47N; P/N: J2504021111S; MADE IN CHINA |
Applications
- Geodetic surveying and mapping
- Waterway mapping
- RTK measurements
- Precision agriculture
- Marine/oceanographic surveys
- Unmanned vehicles
- Smart driving test
For product selection help (connector/base option matching) or integration support with GNSS receivers, contact [email protected] or visit https://rcdrone.top/.
What's Included
Items depend on the selected option. The product list indicates the following package variants (each shown as x1):
- BT-47N antenna
- Antenna large base, TNC connector, default 5 meter feeder
- Antenna large base, SMA connector, default 5 meter feeder
- Antenna small base, TNS connector, default 5 meter feeder
- Antenna small base, SMA connector, default 5 meter feeder
Wire length joints can be customized (configuration noted as reference-only and based on customer needs).
Available Options (Shopify)
- Model: BT-47N; BT-M110SLD-Magnetic Mounting; BT-M110SLB-Metal Mounting; BT-M90SD
- Cable/adapter options: 5m TNC-J SMA-J; 5m TNC-J TNC-J
Details
Designed for RTK measurement and surveying, the BT-47N supports GPS, GLONASS, BDS, and Galileo multi-frequency signals.
Key electrical and RF specifications are summarized for quick receiver matching, including operating voltage, LNA gain, and waterproof rating.
Use the dimensioned drawing to confirm clearance, mounting layout, and connector orientation before installation.
Multi-frequency reception helps reduce common single-band limitations in challenging environments.
Engineered for consistent performance across demanding surveying, mapping, and field deployments.
A durable housing pairs an engineering-plastic radome with an aluminum-alloy base for rugged outdoor use.
High LNA gain supports stable amplification for cleaner GNSS signal output.
Wide 3.3–12V input and a compact 100×47 mm form factor make integration easier across platforms.
Connector, vent valve, and 5/8"-11 UNC mount details help confirm compatibility with your mast or base.
Suitable for precision agriculture, RTK measurements, unmanned vehicles, and marine or waterway mapping workflows.
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