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Russia Requires WiFi Registration
While WiFi wasn’t as broadly unlicensed in Russia as it is in most other industrialized nations, your can not find wifi antenna anywhere a state regulator exempted indoor use in certain bands from registration. The Mass Media agency apparently believes that it has the authority to compel this, although there’s some doubt by observers as to whether it really falls in their purview.
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Home --> Marine Antennas --> Combo Marine Antennas




Model: GVA-100
Drills a hole fixed GPS /VHF Antenna

Description :

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

    (1) Constructions: Polycarbonate radome, rubber-O-ring between top radome and screw base for waterproof
    (2) Dimensions: 47.2mm(Dia.) x 38mm(H)
    (3) Weight: 100grams (with 5M cable & connector).
    (4) Color: Standard in Black
    (5) Mounting: Bulkhead mount with 0.46 inch threaded wing nut.
3. Cable & connector:
    (1) RF cable: 5 meter RG174/U (standard) other length (optional).
    (2) Pulling strength: 6 Kg @ 5sec. molded plastic on connector end for strain relief.
    (3) Connector available: SMA/SMB/MCX/MMCX/GT5/FME.
    (4) Optional: universal connector adapter (FME to TNC/ BNC/ SMA/ SMB/ MCX).
4. Antenna element:
    (1) Center frequency: 1575.42 MHz +/-1.023 MHz.
    (2) Polarization: R.H.C.P. (right handed circular polarization).
    (3) Absolute gain @ zenith: +5 dBi typical.
    (4) Gain @ 10o elevation: -1 dBi typical.
    (5) Axial ratio: 3 dB max.
    (6) Output VSWR: 1.5 max
    (7) Output impedance: 50 ohm
5. Low noise amplifier:
    (1) Center frequency: 1575.42 MHz.
    (2) Power gain: 28db +/-4.5db.
    (3) Bandwidth: 10MHz min.
    (4) Noise figure: 1.5 min.
    (5) Outer band attenuation: 3 dB max.
    (6) Supply voltages: 2.5~5.5V DC
    (7) Current consumption: 2.5V: 6.6mA/ 3V: 8.6mA/ 4V: 12.6mA/ 5V: 16.6mA.
    (8) Output impedance: 50W ohm.
6. Overall performance: (antenna element, LNA & coax cable.)
    (1) Center frequency: 1575.42 Mhz.
    (2) Gain: at 90° 30 ± 4.5dBi (cable loss).
    (3) Mounted on the 60mm x 60mm square ground plan.
    (4) Noise figure: 2.0 max.
    (5) Axial ratio: 3 dB max.
    (6) Bandwidth: 2MHz min.
    (7) VSWR: 2.0 max.
    (8) Output impedance: 50W ohm.
7. Environmental:
    (1) Operating temperature: -40°C ~ +85°C.
    (2) Storage temperature: -50°C ~ +90°C.
    (3) Relative humidity: 95% non-condensing.


VHF Annt
Frequency 156-165Mhz (AIS System) Frequency 137-150Mhz (Orbcomm)
VSWR 156Mhz 160Mhz 165Mhz <2.0 Max 1.9 1.3 1.7 VSWR 137Mhz 141Mhz 150Mhz 2.5Max 2.29 1.42 2.3
Impedence 50&Omeg; Impedence 50Ω
Cable type RG174 Cable type RG174
Cable length 5M Cable length 5M
Connector SMA Coding or Others Connector SMA Coding or Others
Power 5~10W Power 5~10W

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