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JS-HAC41A is a multi-constellation, full-band high-precision antenna that covers BDS, GPS, GLONASS, and Galileo. The JS-HAC41A features excellent low elevation gain, wide-angle circular polarization, and stable phase center. The module is easy to install, offers outstanding performance, and is suitable for multi‑system, high‑precision surveying and mapping applications. It is widely used in unmanned aerial vehicles (UAVs), surveying and mapping, aerial photography, navigation dispatching, disaster monitoring, and container terminal operations.
Product Features
Stable phase center
Good low-elevation gain
360° horizontal coverage
Wide-angle circular polarization characteristics
Anti-interference antenna circuit design
Plug and play
Overall dimensions: Φ45±0.5 * H69.2±0.5 mm, weight ≤70g (including cables)
| Specification Parameter | Details |
| Product Model | JS-HAC41A |
| Product Type | Multi Constellation Full Frequency Helical Antenna |
| Supported Constellations | GPS, BDS, GLONASS, Galileo |
| Frequency Bands | GPS L1 L2 L5, BDS B1I B2I B3I, GLONASS G1 G2 G3, Galileo E1 E5a E5b E6 |
| Antenna Gain | >= 3 dBi for L1/B1/E1/G1; >= 3.5 dBi for L2/B2/B3/G2/L5/G3/E5a/E5b/E6 |
| Polarization | Right Hand Circular Polarization |
| Phase Center | Stable |
| Horizontal Coverage | 360 degrees |
| Impedance | 50 Ohm |
| VSWR | <= 1.5 for Antenna, <= 2.0 for LNA Output |
| LNA Gain | 32 +/- 2 dB |
| Noise Figure | <= 2 dB |
| Operating Voltage | 3.3 to 12 V |
| Operating Current | <= 45 mA |
| Anti Interference | Yes, optimized antenna circuit design |
| Connector Type | SMA-J internal thread internal pin |
| Cable Specification | RG316, 500 mm length |
| Radome Material | Rubber |
| Dimensions | Diameter 45 +/- 0.5 mm x Height 69.2 +/- 0.5 mm |
| Weight | <= 70 g including cable |
| Operating Temperature | -40 to +80 Celsius |
| Storage Temperature | -55 to +85 Celsius |
| Humidity | 0% to 95% non-condensing |
| Target Applications | Surveying, mapping, light UAV, navigation, geodesy, road construction, marine surveying, container operations |
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