Simrad 000-11640-001, Installation Manual

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Installation | MX521B Installation Manual
Surface mount
The antenna can also be surface-mounted. Make sure there
is at least 5-inch clearance underneath the mounting surface
to accommodate the lower section of the antenna housing,
connector and cable. Refer to the figure below for surface mounting
considerations. Cut a 133.35 mm (5 1/4 inch) diameter hole on a
horizontal mounting surface and drill the four mounting screw
holes as shown.
Fasten the antenna by using 4-40 UCN size stainless steel screws (4
places). Use a marine grade caulking compound to seal between
the mounting surface and the bottom of the antenna housing.
Choose a location for the antenna that has a clear view of the
sky. Make sure there are no major obstructions or metal fixtures in
the immediate proximity to the antenna. The GPS antenna relies
on direct ‘line-of-sight’ signal reception. If you are unsure if the
chosen location is suitable, it is advisable to mount the antenna in a
temporary manner to verify correct operation.
4-40 UCN
mounting screws
(4 places)
133.35 mm
(5.25”)
127.0 mm
(5.0
”)
1
6
9
1 0
2
3 8
4 7
5
4-40 UCN mounting screws
133.35 mm
(5.25
”)
182.0 mm
(7.17”)
102.0 mm
(4.02
”)