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The Comar AV200 GPA is a rugged omnidirectional 5/8-wave ground-plane antenna designed for fixed VHF/AIS installations. Its adjustable 135–175 MHz operating range allows the antenna to be tuned to the required AIS/VHF frequency. The matching coil is DC-fed to provide protection against static discharge.
| Item | Technical Specification |
|---|---|
| Manufacturer | Comar Systems |
| AMI Marine SKU | COM-0020 |
| Model | AV200 GPA |
| Product Type | VHF / AIS Base Station Antenna |
| Antenna Type | 5/8 λ Ground Plane |
| Application | AIS / VHF land and marine service |
| Frequency Range | 135–175 MHz, tunable |
| AIS Frequency | Tunable to AIS channels |
| Impedance | 50 Ω |
| Gain | 1.5 dBd / 3.65 dBi |
| Radiation Pattern | 360° omnidirectional |
| Polarization | Linear vertical |
| Radiation Angle | 18° |
| E-Plane Beamwidth | 67° @ −3 dB |
| Maximum Power | 200 W CW @ 30°C |
| Antenna Length | Approx. 1.48 m |
| Radial Length | Approx. 530 mm |
| Weight | Approx. 570 g |
| Construction | Aluminium, copper and nylon |
| Mounting | Mast Ø 25–30 mm |
| Wind Loading | 28 N @ 150 km/h |
| Wind Surface Area | 0.02 m² |
| Connector | UHF female, gold-plated centre pin |
| Cable | 10 m cable supplied |
| Protection | IP67 |
| Operating Temperature | −15°C to +55°C |
| Compass Safe Distance | 50 cm |
| Grounding | Metal parts DC-grounded; inner conductor DC-short |
| Main Application | Shore-based AIS monitoring / coastal monitoring |
| Origin / Manufacturer | United Kingdom |
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