User's Guide

23
Active Antenna Installation
McMurdo recommend the NAV-ACTIVE 905.05, an active NAVTEX
antenna with PL socket and 1 inch nut fixing.
The ICS NAV5plus provides a regulated 9 V DC 100 mA output to provide
power for an active antenna. Check that your active antenna is compatible
with this power output. If it is not, then an external power supply interface
will be required. Your antenna supplier should be able to provide this.
If you use an external power supply interface then you must connect the RF
output from the interface to the ICS NAV5plus passive antenna input rather
than the active antenna input.
Securely mount the active antenna to a vertical surface or pole, route the
connecting cable though to the ICS NAV5plus using cable glands to pass
though bulkheads as required.
Connect the active antenna output coaxial cable centre core to Antenna
Connector Terminal 1 and the coaxial screen to Terminal 2.
Passive Antenna Installation
Connect the passive antenna output coaxial cable centre core to Antenna
Connector Terminal 6 and the coaxial screen to Terminal 5
Dual Antenna Installation
A dual antenna installation is NOT possible.
NAVTEX AC Power Supply Unit
Consult the installation instructions packed with the power supply.
An additional ground wire may be connected between the green safety
earth wire on the ICS NAV5plus and the ground terminal on the NAVTEX
Power Supply Unit.