Furuno 1823C Manuel D’Utilisation

1-21 

See the mounting consideration for MODEL1833C on page 1-4. 
The compass safe distance of 1.25 meters (standard compass) and 0.85 meters (steering 
compass) should be observed to prevent deviation of the magnetic compass. 
 

1.  Remove mounting hardware at the bottom of the antenna unit; four each of hex. bolts 

(M10X20), spring washers and flat washers. Save mounting hardware to use it to fix the 
antenna unit to the mounting platform later on.   

Flat washer

Spring washer
Hex bolt (M10 x 20)

Screws

two screws on other side

Bow

Stern

Cable entry

2.  Construct a platform (wood, steel, or aluminum) of 5-10 mm (recommended dimension) 

in thickness referring to the outline drawing at back of this manual. A mounting bracket 
for mounting the antenna unit on a sailboat mast is optionally available. (Refer to page 
1-26.) Fasten the platform to the mounting location. Next, position the base so the cable 
entrance faces the stern direction. 

 
Note: When drilling holes in the platform, be sure they are parallel with the fore and aft line. 
 
3.  Using the hex bolts, flat washers and spring washers removed at step 1, fasten the base 

to the platform. The torque should be between 19.6-24.5 N

•

m. 

 
Note: Longer hex bolts (M10X25) are supplied with the installation materials. Use them 

instead of the hex bolts removed earlier if the mounting platform thickness is 5–10 
mm.