Furuno FELCOM 82A Series Installation Manual page 11

If installed within 5 m of
radar antenna, the antenna
unit must not be within the
radar beam.
Compass safe distance
Locating the antenna unit too close to a compass can affect compass performance. The
compass safe distance is 1.10 meters, steering compass, 1.60 meters, standard compass.
Other mounting guidelines
Other important mounting guidelines are
• Locate the antenna unit away from exhaust stacks (foreign material on the radome can interfere
with reception and transmission).
• Keep the unit away from heat sources.
• Locate the unit away from places where fuels and chemical solvents are stored.
• Keep in mind the length of the cable from the communication unit is maximum 100 meters.
1.1.2 General mounting (construction of mast)
General
To facilitate servicing, construct a mast more than 1 meter in height from the deck. The
paragraphs which follow provide guidelines for selection and construction of the mast.
Refer to the drawing at back of this manual.
Guardrail, platform
When the mast is tall, fit it with a guardrail and platform (or steps), for serviceman's safety
and convenience.
For servicing ease, the distance between hatch and the deck (or platform) to the antenna
unit should be about 1 meter. (In most installations the serviceman stands on the platform
while checking the radome. Thus this distance should be secured for ease of servicing.)
The guardrail should be as high as possible for sufficient safety.
30
Distance from antenna radar
More than 5 m
3
20