Beitian BN-705 Ceramic Patch GPS AIS Navigation Antenna for Marine Vessels, SMA-J, 3m RG58/RG174
Beitian BN-705 Ceramic Patch GPS AIS Navigation Antenna for Marine Vessels, SMA-J, 3m RG58/RG174
Beitian
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Overview
The Beitian BN-705 is a ceramic patch GPS AIS navigation antenna designed for marine vessel and nautical application, using a mushroom-head housing with an integrated LNA. It uses an SMA-J connector and is available with a 3 m cable (RG58 or RG174, depending on the selected option/model).
Key Features
- Supported working modes vary by model option: GPS L1 / GLONASS L1 / BDS B1 / GALILEO L1 (see Specifications)
- Right-handed circular polarization (RHCP)
- Horizontal plane coverage angle: 360°
- Low VSWR: < 1.5
- Integrated LNA: 28 ± 2 dB gain, noise figure < 2 dB (Only LNA)
- Screw-base mounting; SMA-J connector
Specifications
Model options (working mode / frequency)
| Model | Working mode / frequency |
|---|---|
| BS-705 | GPS L1: 1575.42MHz |
| BN-705 | GPS L1: 1575.42MHz; GLONASS L1: 1602MHZ |
| BD-705 | GPS L1: 1575.42MHz; BDS B1: 1561MHZ |
| BT-705 | GPS L1: 1575.42MHz; GLONASS L1: 1602MHZ; BDS B1: 1561MHZ; GALILEO L1: 1575.42MHZ |
Ceramic antenna characteristics
| Range of receiving frequency (BN-705) | GPS L1: 1575.42MHz; GLONASS L1: 1602MHZ |
| Gain | 2dBi |
| Output VSWR | < 1.5 |
| Impedance | 50Ω |
| Polarization | RHCP |
| Axis ratio | < 3dB |
| Horizontal coverage angle | 360° |
| Frequency temperature coefficient | 0 ± 10 |
LNA specification
| LNA Gain | 28 ± 2dB |
| Noise figure | < 2dB (Only LNA) |
| Output VSWR | < 1.5 |
| Output impedance | 50Ω |
| Passband ripple | ± 2.0dB (Only LNA) |
| Supply voltage | 2.8V-5.0V |
| Supply current | ≤ 20mA |
Work environment
| Operating temperature | -40°C ~ +85°C |
| Storage temperature | -40°C ~ +85°C |
| Wet degree | 40% - 95% |
Mechanical / installation
| Size | 96.6mm * 96.6mm * 124mm |
| Mounting | Screw base |
| Connector | SMA-J |
| Length | 3m |
Cable / weight by option
| Cable option | Cable | Weight |
|---|---|---|
| RG58 cable versions | RG58 Cable | ≤ 380g |
| RG174 cable versions | RG174 Cable | < 360g |
Structural diagram dimensions (mm)
- Ø96.6
- 124
- 62.8
- 40
- 25
- 7
- 2
- 1.4
- 18
- Ø24.2
- Ø33.7
What's Included
- 1 x GNSS antenna (model selected: BS-705 / BN-705 / BD-705 / BT-705)
- 3 m cable (RG58 or RG174 depending on option) with SMA-J connector
Applications
- Surveying and mapping
- Waterway surveying and mapping
- Precision agriculture
- Marine industry / marine surveying
- Construction industry
- Driving test and driver training
For selection help (BN-705 vs other 705-series options) or integration questions, contact support@rcdrone.top or visit https://rcdrone.top/.
Details
Choose the 705-series variant that matches your GNSS needs and cable option (RG58 or RG174) before checkout.
Multi-constellation support helps improve positioning reliability for marine navigation and surveying installs.
Integrated LNA gain, low VSWR, and RHCP polarization support stable GNSS reception with full 360° coverage.
Compact mushroom-head housing with screw-base mount simplifies installation on decks, masts, and instrument pods.
An SMA‑J connector with a 3 m cable makes it easy to route to AIS/GNSS receivers while keeping the antenna mounted high.
Key electrical and environmental specs are summarized for quick integration checks with your GNSS/AIS equipment.
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