Furuno 1833 Installation Manual page 21

Mounting of antenna unit
The antenna unit can be mounted using the fixing holes on the outside (200 x 200 mm) or
inside (140 x 150 mm) the antenna unit.
Outside fixing holes
Use the hex head bolt (supplied) to mount the antenna unit as below.
1. Lay the corrosion-proof rubber mat (supplied) on the mounting platform.
2. Lay the antenna unit on the mounting platform, orienting it as shown in below.
3. Insert four hex bolts (M12x60, supplied) and seal washers (Ф30, supplied) from the top
of the antenna housing. Insert the seal washers with the larger diameter next to the bolt
heads. Be sure the seal washer, not other washers, is next to bolt head.
Bow mark
Location of rubber mat
STERN
Antenna unit
CAUTION
Do not lift the Antenna unit by the
radiator; lift it by the housing.
The radiator may be damaged.
Ground
terminal
Rubber
mat
BOW
1-13