7
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 rst 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 vessel’s bow.
+H
+R
-R
-H
-P
+P
P
S
A