Marine AIS Antennas: Frequency Range: 156-162 MHz, Gain: 3-6 dB, VSWR: ≤1.5:1, Impedance: 50 Ohms, Connector Type: SO-239 (PL-259), Material: Fiberglass or Stainless Steel, Height: 1-4 meters, Operating Temperature: -30°C to +70°C, Waterproof Rating: IPX6/IPX7.
Marine Navigation: GPS Accuracy: 1.5-3 meters, GNSS Support: GPS, GLONASS, Galileo, Beidou, Display Size: 5-16 inches, Resolution: 800x480 to 1920x1080, Power Supply: 12-24V DC, Operating Temperature: -15°C to +55°C, Waterproof Rating: IPX7/IPX8, Material: Polycarbonate or Aluminum.
Buoyancy: Foam or Polyethylene, Density: 30-50 kg/m³, Flotation Capacity: 5-50 kg, Material: Closed-cell foam or PVC, Operating Temperature: -40°C to +80°C.
Material Grades: Stainless Steel (316L), Aluminum (6061-T6), Fiberglass (E-Glass), Polycarbonate (Lexan), Polyethylene (HDPE).
Viscosity: Not typically applicable to antennas/navigation systems, but for marine lubricants: 10W-40, 15W-40, or SAE 30.