16
WM-4 Marine Weather & Audio Receiver Installation Manual
Installing the Antenna
In-box antenna mounting options are surface mount,
low-profile surface mount, or pedestal mount.
Optional mounting options such as an extension
mast or Rail Mount are available.
Always mount the antenna so that it does not
interfere with safe operation of the vessel.
Important: When mounting to a surface using the
low-profile, pedestal, or extension mast mounting
method where the antenna cable will exit above
the mounting surface, orient the base or pedestal
bottom so that the antenna cable exits towards the
rear of the vessel, away from oncoming wind from
normal vessel motion.
The following accessories are available:
• WM-4 SIRIUS SAT WEATHER POWER CABLE
• WM-4 SIRIUS SAT WEATHER ETHERNET
ADAPTER
• WM-4 SIRIUS SAT WEATHER RADIO CABLE
• WM-4 SIRIUS SAT WEATHER INSTALL KIT
• WM-4 SIRIUS SAT WEATHER ANTENNA EXT
Follow the instructions in the next sections for the
mounting method you’ve selected. Do not cut the
6” antenna lead or remove the connectors from
any of the cables under any circumstances.
Surface Mount
1. Drill a 9/16” mounting hole. When drilling
fiberglass surfaces, use a small backup block
of scrap wood underneath to control push-
through splintering. Use caution to avoid
drilling through or near fuel lines, fuel tanks,
hydraulic lines, or electrical wiring.
2. For mounting surfaces greater than 1/4”
thick (up to 1” thick), use the extension shaft
(provided), otherwise continue with step 3.
a. Route the 6” antenna lead with TNC female
connector through the center of the
extension shaft.
b. Thread the extension shaft onto the
existing antenna shaft and tighten.
3. Pass the 6” antenna lead connector and cable,
and extension shaft (if used), through the hole
Mounting
Surface
6” Antenna
Lead
Extension
Shaft
Antenna
Retaining
Nut
Lock
Washer
Antenna
Cable
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