Furuno 1823C-BB, GD-1900C-BB, 1953C-BB manual Antenna unit, showing location of mounting hardware

Mounting the antenna unit of MODEL1823C-BB

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.

Stern

Cable entry

Bow

Screws

two screws on other side

Flat washer

Spring washer

Hex bolt (M10 x 20)

Antenna unit, showing location of mounting hardware

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

1-11.) Fasten the platform to the mounting location. Next, position the mounting base on the platform so the cable entrance faces the stern direction.

*: For steel platform take appropriate measures to prevent corrosion.

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 mounting 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.

Antenna base

Effective	assy.
thread
length:
12 mm

5 mm or under : M10x20
5-10 mm:	M10x25
over 10 mm:	locally supplied bolts
Flat

washer Spring washer

	Platform
Hex bolt
	Apply silicone sealant.
(M10 x 25

or M10 x 20)

How to fasten the mounting base to platform

1-6