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1.2.2 Mounting antenna unit of MODEL 1722/1722C/1723C
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
Antenna unit, showing location of mounting hardware
2. Construct a platform (wood, steel, or aluminum) of 5-10 mm 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 1-14.) 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.
Flat
washer
Antenna base
assy.
Spring
washer
Platform
Hex bolt
Apply silicone sealant.
(M10 x 25
or M10 x 20)
Transceiver
module
5 mm or under :M10x20
5-10mm: M10x25
over 10 mm: local supplied bolts
How to fasten the base to platform