Technical Specification

Antenna Characteristics:

• Frequency Range: 1,575.42 MHz $\pm$ 1.023 MHz (L1 band for GPS, Galileo, and QZSS)
• Polarization: R.H.C.P. (Right Hand Circular Polarization)
• Antenna Gain:
  • $\ge 2.0\text{ dBi}$ (at 90∘ elevation angle)
  • $\ge -4.0\text{ dBi}$ (at 10∘ elevation angle)
• Axial Ratio: $<4.0\text{ dB}$ (at 90∘ elevation angle)
• Output Impedance: $50\Omega$

Low Noise Amplifier (LNA) (Pre-Amp):

• Pre-Amp Gain: $27.5\pm 5.5\text{ dB}$ (some sources list $26.5\pm 5.5\text{ dB}$ for environmental tests)
• Pre-Amp Noise Figure: $\le 1.6\text{ dB}$ (some sources list $\le 1.8\text{ dB}$ for environmental tests)
• Out-Band Attenuation (relative to f0​=1575.42 MHz):
  • f0​±20 MHz:>7 dB (some sources list $>6\text{ dB}$)
  • f0​±50 MHz:>20 dB (some sources list $>19\text{ dB}$)
  • f0​±100 MHz:>30 dB (some sources list $>28\text{ dB}$)
• Output VSWR (Voltage Standing Wave Ratio): $<2.0$

Electrical:

• Supply Voltage: $4.0\text{ VDC}$ to $5.5\text{ VDC}$ (typically $5.0\text{ VDC}$ nominal, supplied via coaxial cable from the receiver/MFD)
• Power Consumption: $\le 25\text{ mA}$

Physical and Environmental:

• Dimensions (Approximate):
  • Diameter: ~90 mm (3.5 inches)
  • Height: ~100 mm (3.9 inches)
• Weight: $\approx 120\text{ g}$ (0.26 lbs)
• Connector Type: TNC-J (female)
• Operating Temperature: −25∘C to +65∘C
• Storage Temperature: −35∘C to +75∘C
• Operating Relative Humidity: $\le 95\%$ RH (without condensation)
• Protection Grade: Designed for outdoor marine installation, resistant to harsh weather conditions (rain, wind, sunlight).
• Compass Safe Distance: $\le 0.3\text{ m}$ (from standard magnetic compass)

Compatibility:

• Compatible with a wide range of Furuno GPS Navigators (e.g., GP-30, GP-31, GP-32, GP-36, GP-150, GP-170, GP-7000 series)