Sperry Marine NAVIKNOT 600 SD, Operation, Installation And Service Manual

Page: 241 / 256

The unit should be clear of reflections from masts, out of the path of RADAR
beams and out of the range of any object that may shadow or interfere with the
reception of GPS signals. The optimum mounting location of the antenna unit
would therefore be the top of the main mast, above all other structures.
In most cases, however, it will not be possible to mount the antenna unit at an
optimum location. It may be particularly difficult to maintain the required
distances to the antennas of safety-relevant communication devices, such as
Inmarsat-C or other GMDSS equipment.
When choosing the antenna location, observe the guidelines on page 4 to
minimize the effects of signal shading, multipath reflections and interference.