
Installation Manual 30 Y1-03-0204 Rev.J
Attenuation values
Type Name Part number Total gain
GPS-Antenna GPS-Antenna Marina 2 2625 +35dBi
GPS-Antenna Procom GPS4 2622 +35dBi
Comb. GPS/VHF-Antenna Comrod AC-17 2624 +20dBi (GPS amp gain)
Cable RG214 2630 -15,75 dB
Adapter GPS-VHF Adapter cable with
1m RG58 / TNC connector
2612 -1dB
Connector TNC plug RG214 crimp 2633 -0,1dB
Example
Procom GPS4 + 35,00dBi
11m RG214 0,35 dB/m - 3,85dB
maybe 2 TNC plugs - 0,20dB
Nauticast with Adapter P/N 2610 -1,00dB
Total 29,95dB
Necessary minimum attenuation
(=> 12dB Attenuator needed!)
≥11,95dB
GPS Input ≤18,00dB
Attention
If installations are not in compliance to this requirement we cannot guarantee operation nor
accept a warranty issue.
Antenna Layout
The position of the VHF and GNSS – antennas must be added to the existing antenna layout
of the vessel.
3.11.3 Power Supply
The NAUTICAST must be supplied from the emergency power source. A further requirement
is to connect AIS to the reserve power source of the GMDSS. A new battery capacity
calculation must then be undertaken. See sample in 8.1 (Samples for battery calculation)
Following documents are needed for the installation approval of the classification
• Antenna Layout (arrangement)
• Battery Calculation
• Connection / Block – Diagram with locations
• Type Approval Certificate
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