It is recommended that the GNSS and L-Band antennas should be installed with proximity of 2.5 metres from transmitting devices, and 1 metre from any other antenna. GNSS and L-Band antennas require a clear view of the sky in all directions where at all possible and they should be installed away from large structures to avoid multipath.
While mobilising antenna make sure GNSS/L-Band antenna are clear from:
- Communications domes
- Television antenna amplifiers
- Satellite television domes
- Any transmitting antenna closer than 2.5m
- A faulty GPS antenna within a metre
- Radar scanner at the same height and close
- Television transmitters
- High power radar
- Microwave data links
Signal masking by smaller objects such as other antennas or antenna poles can also cause problems when the vessel is in motion since these obstructions can momentarily block GNSS signals, causing interruptions to the transmitted signal which adversely affects range measurements.
For further information refer to the following antenna and cable installation guide: