GVA-100

1. AIS system & boat manages the double frequency GPS/VHF antenna or GPS/ orbcomm antenna.

2. Physical condition

• Constructions: Polycarbonate radome, rubber-O-ring between top radome and screw base for waterproof
• Dimensions: 47.2mm(Dia.) x 38mm(H)
• Weight: 100grams (with 5M cable & connector).
• Color: Standard in Black
• Mounting: Bulkhead mount with 0.46 inch threaded wing nut.

3. Cable & connector:

• RF cable: 5 meter RG174/U (standard) other length (optional).
• Pulling strength: 6 Kg @ 5sec. molded plastic on connector end for strain relief.
• Connector available: SMA/SMB/MCX/MMCX/GT5/FME.
• Optional: universal connector adapter (FME to TNC/ BNC/ SMA/ SMB/ MCX).

4. Antenna element:

• Center frequency: 1575.42 MHz +/-1.023 MHz.
• Polarization: R.H.C.P. (right handed circular polarization).
• Absolute gain @ zenith: +5 dBi typical.
• Gain @ 10o elevation: -1 dBi typical.
• Axial ratio: 3 dB max.
• Output VSWR: 1.5 max
• Output impedance: 50 ohm

5. Low noise amplifier:

• Center frequency: 1575.42 MHz.
• Power gain: 28db +/-4.5db.
• Bandwidth: 10MHz min.
• Noise figure: 1.5 min.
• Outer band attenuation: 3 dB max.
• Supply voltages: 2.5~5.5V DC
• Current consumption: 2.5V: 6.6mA/ 3V: 8.6mA/ 4V: 12.6mA/ 5V: 16.6mA.
• Output impedance: 50W ohm.

6. Overall performance: (antenna element, LNA & coax cable.)

• Center frequency: 1575.42 Mhz.
• Gain: at 90° 30 ± 4.5dBi (cable loss).
• Mounted on the 60mm x 60mm square ground plan.
• Noise figure: 2.0 max.
• Axial ratio: 3 dB max.
• Bandwidth: 2MHz min.
• VSWR: 2.0 max.
• Output impedance: 50W ohm.

7. Environmental:

• Operating temperature: -40°C ~ +85°C.
• Storage temperature: -50°C ~ +90°C.
• Relative humidity: 95% non-condensing.