VHF interference
VHF interference from cellular phones and radio transmitters may interfere with GNSS operation.
GNSS gain pattern
VHF gain pattern
VHF antenna
HS75
A
B
C
A Minimum horizontal spacing: 2 m (6.5 ft).
B Minimum vertical spacing: 2 m (6.5 ft).
C Minimum cable separation: 0.3 m (1 ft) for the first 5 m (16.5 ft).
Mounting orientation
Mount the HS75 parallel to, and along the centerline of the axis of the boat. Doing so, provides a
true heading. The recessed arrow (A) under the antenna housing should point towards the bow of
the vessel.
+H
+R
-R
-H
-P
+P
P
S
A
• You can enter a heading offset from a compatible display unit.
• You will have an offset in the pitch/roll output if the unit is not installed on a horizontal plane.
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Installation | HS75 User Manual