Fx312 Antenna; Fx412 Antenna - MLR FX312 User Manual

2.1.- FX312 ANTENNA

The antenna coax cable must not exceed 10 metres in length. It may however be shortened to
suit. The antenna must have a clear view of the horizon all round for best reception results.
- For sailboats mount the antenna on the pushpit.
- For motorboats mount the antenna on the cabin roof
When there is a radar, the antenna must be sited above the radar scanner
Contrary to previous MLR antennas it is now possible to cut the cable to shorten it. The
minimum length is 1 meter.
The coaxial cable must take the shortest route to the display unit whilst avoiding any other
power or signal cables. The TNC plug is connected on to the antenna cable at time of
manufacture to ensure a good quality connection.

2.2.- FX412 ANTENNA

The antenna is best sited well above the main structure of the vessel, clear of all surrounding
objects, especially all transmitting aerials.
Fix the counterpoise of the antenna (white cable) to the antenna with the use of the screw and
washers provided. The counterpoise cable must be vertical for 80% of its length. Secure the
cable using cable ties or insulation tape to stop movement. The counterpoise cable of the
antenna must not be placed inside a metallic tube or mast and not connected to any earth or
metallic part of the vessel.
Where radar is fitted aboard the vessel the antenna must be sited above the scanner and well
clear of the radar beam.
Advice: The antenna can be installed on any 1 inch 14 TPI bracket.
N.B. Suitable non-metallic 14TPI extension poles and a variety of brackets are available from
your local dealer.
The coaxial cable must take the shortest route from the antenna to the display unit, whilst
avoiding any other power or signal cables The TNC antenna plug is connected to the cable at
the time of manufacture to ensure a good quality connection
The antenna coaxial cable must not exceed 10 meters in length. It may however be shortened
to suit the installation.
Contrary to previous MLR antennas it is now possible to cut the cable and shorten it. The
minimum length is 1 metre, in this event a new TNC connector must be obtained and correctly
fitted. (It is not possible to re-use the factory fitted one.)
Note: Only the whip antenna provided with the FX412 part no. ACC026 must be used with the
antenna assembly.
FX312 & FX412 VERSION 2.0 MLR ELECTRONIQUE
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