GPS Antennas

Match the antenna's connector type and mounting style to your device, check supported frequency bands (GPS L1/L2, GLONASS, Galileo if needed), and consider gain and polarization—higher gain improves reception in weak-signal areas while RHCP polarization is standard for satellite GNSS signals

Active antennas include a low-noise amplifier (LNA) and need power (usually via the coax feed) to boost weak signals, making them better for long cable runs; passive antennas have no amplifier, require shorter cable runs and are suitable when signal levels are strong

Place the antenna with a clear view of the sky, away from metallic obstructions and RF noise sources, mount it as high as practical (roof or dashboard for vehicles), and use the shortest reasonable coax run to minimize cable loss

Use low-loss coax (e.g., RG-58 or better, RF-200/LMR-240 for longer runs), choose the correct connector type (SMA, SMB, TNC, MCX, etc.) to match your device, and keep cable lengths as short as practical to reduce attenuation

Many modern antennas are multi-band and designed to receive multiple GNSS constellations, but confirm the antenna's specified frequency coverage includes the bands used by the constellations you need

Regularly inspect mounts and seals, use weather-rated antennas with IP-rated enclosures for outdoor use, avoid prolonged water pooling or debris buildup, and ensure cable entry points are sealed to prevent moisture ingress

Prices typically range from budget options under $50 to several hundred dollars for precision or OEM-grade antennas; higher-priced models generally offer better materials, multi-GNSS support, higher gain, integrated filtering, and robust weatherproofing