User Manual for AIT2500 V1.01
TEL + 44 1179 554474 www.digitalyacht.co.uk
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The AIS antenna connector on the AIT2500 is a BNC type connector and it may be necessary to get a PL259 to
BNC adaptor if you are connecting a normal VHF antenna to the AIT2500 as these are terminated in the standard
PL259 VHF connector.
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The supplied GPS antenna is designed to be fitted to a
standard 1”x14 TPI threaded VHF pole mount, which are
available in many different styles from all good marine
electronic dealers and chandleries.
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You should ensure the GPS antenna has a good clear view of
the entire sky. It is not recommended that the GPS antenna is
mounted up a mast where the motion of the vessel will cause
the antenna to swing and potentially reduce the accuracy of
the GPS position.
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Do not mount your antenna in the direct path of a radar
transmitter.
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Feed the ten metre long cable attached to the GPS antenna,
through the pole and screw the antenna onto the pole mount
as shown.
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Route the cable to your AIT2500 unit, adding any necessary
extension cables.
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Connect the cable from the GPS antenna to the GPS connector
on the AIT2500. The GPS antenna is terminated in a threaded
TNC type connector to differentiate it from the AIS/VHF antenna
which is terminated in a bayonet BNC type connector.
Installation Step 2
– Mechanical Fixings
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Access to the fixing holes is achieved by removal of the two green decal strips down each side of the AIT2500.
Once fixed in place, the green decal strips can be clicked back in place.
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Secure the AIS Transponder to a flat surface in the selected location. Use four M4 wood screws or other fixings
suited to the material the unit is being fixed to. The unit may be installed in any orientation
Fixing location drawing
