WAVESHARE GNSS L1+L2+L5 Multi-Satellite Multi-Frequency Four-Wire Helical Active Precision Positioning Antenna, Version: Q25

1. Connector type: SMA Inner Pin
2. Protection rating: IP67
3. Four-wire helical antenna for GNSS, featuring high gain and wide circular polarization coverage angle
4. Receives more low-elevation satellite signals, improving positioning performance; suitable for smart home, smart agriculture, and high-precision map applications
5. Four-wire helical structure with wide circular polarization coverage angle, enhancing low-elevation satellite signal reception capability
6. High gain, low noise figure design, supports multi-frequency, multi-system GNSS signal reception
7. Small size, lightweight, flexible installation, suitable for various devices and applications
8. Uses SMA interface, supports RF transmission and coaxial DC bias feeding function
9. Meets IP67 protection requirements, suitable for long-term stable operation in outdoor environments

Antenna characteristics
1. Frequency range:
- GPS: L1/L2/L5
- BDS: B1/B2a/B2b/B3i
- GLONASS: G1/G2
- Galileo: E1/E5a/E5b
2. Antenna gain: Q25 2dB; Q39 2.5dBi
3. Characteristic impedance: 50Ω
4. Polarization: RHCP (Right-hand circular polarization)
5. Coverage angle: 360 degrees
6. Dimensions: Q25 58.70 x 27.70 mm; Q39 40.80 x 44.30 mm

Amplifier characteristics
1. Gain: Q25 37dB; Q39 28dB
2. Noise figure: 1.5dB
3. Operating voltage: Q25 3.3V ~ 16V DC; Q39 3.0V ~ 16V DC
4. Operating current: Q25 13mA; Q39 15mA