Furuno GD-1900C-BB, 1953C-BB, 1943C-BB Mounting the Antenna Unit of MODEL1833C-BB, Antenna unit

1.4Mounting the Antenna Unit of MODEL1833C-BB

Mounting considerations

See the mounting considerations for the MODEL1823C-BB on page 1-5.

The compass safe distance of 0.90 meters (standard compass) and 0.70 meters (steering compass) should be observed to prevent deviation of the magnetic compass.

Mounting the antenna unit of MODEL1833C-BB

1.Open the antenna unit packing box carefully.

2.Unbolt the four bolts at the base of the radome cover to remove it.

Radome cover

Antenna unit

The mounting surface must be parallel with the waterline and provided with five holes (four fixing holes and one cable entry) whose dimensions are shown in the outline drawing attached at back of this manual.

The unit is adjusted so a target echo returned from the bow direction will be shown on the zero degree (heading line) position on the screen. When drilling holes, be sure they are parallel with the fore and aft line.

3.Prepare a platform (wood, steel*, or aluminum) of 5 to 10 millimeters in thickness for the antenna unit.

A mounting bracket for mounting the antenna unit on a sailboat mast is optionally available. (Refer to page 1-17.) Find the cable entry on the radome base. Next, position the radome base so the cable entry faces the stern direction. This alignment must be as accurate as possible.

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

Cable entry

Cable entry hole (approx. 20)

Flat washer

Spring washer

M10 x 25 Hex bolt

Ship's bow

4-10 Holes

Platform

1-13