R400NG
16
12
OPERATION
Operation of the R400NG unit is fully automatic and only requires power, VHF, GPS and data cable
connection.
On powering up the unit:
●
The green LED marked ON should illuminate
●
The Channel LEDs should come on briefly then go off
●
The Channel A and B LEDs should flash momentarily when information from nearby
transceivers is received
Data is then output for visual or textual viewing on compatible electronic charting systems or other
systems or devices.
12.1
Range of AIS
The AIS reception range is similar to that normally associated with Marine VHF Radiotelephone.
Range is dependent on height of antenna and also type of antenna, the higher and better antenna
installed the greater the reception range.
Typically an antenna mounted on the rail of a yacht will achieve 15 miles, mounted on the masthead
will increase this to 20 miles. Shore based reception is governed by local terrain, however an open
view to the sea with an antenna mounted in the clear at a height of approximately 20 metres will
achieve 25 miles plus, higher gain antenna can be used on shore to further increase the range.
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