Onwa Marine Electronics KS-200A - Manual (Page 16)

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5. Installation of VHF Antenna
For the VHF antenna there is a VHF female bulkhead connector used, that
mounts to the back of the case.
The VHF antenna employed for AIS use:
Must be a dedicated antenna, i.e. not shared with any other VHF
transmitter/receiver.
Must be suitable for marine shipboard applications (index of protection,
ruggedness, means of mounting, etc.).
Should be omni-directional and vertically polarized with unity gain (0dB)
with a bandwidth sufficient to maintain VSWR <1.5 over the frequency
range 156 -163 MHz. As a minimum the 3dB bandwidth must cover the
two AIS channels and the DSC Channel.
Should be mounted with at least a two meter vertical separation distance
from any other VHF antenna used for speech or DCS communication.
INSTALLTION WITH A PLPE (CUSTOMER`S CARE)
Antenna
Antenna Cable
Connector
Pipe