5
Important Note Regarding Sealing
To ensure that the antenna base is effectively sealed against the mounting surface, care must be taken
regarding curvature of the mounting panel. It is highly recommended that the antenna is installed on a
clean, flat and level surface. After installation the compression of the rubber boot against the mounting
panel should be checked and if necessary, a small bead of neutral cure silicone sealant can be applied
around the edge of the mounting boot. It is important that the periphery of the antenna is sealed and that
no moisture is allowed to penetrate under the antenna boot.
3. Prepare and drill hole
Up to 13 cables fitted with standard (SMA/FME) connectors, or 12
cables fitted with FAKRA type connectors can pass through a 19mm
(3/4”) clearance hole. If other connector types are fitted or the
number of feeds exceeds these limits, you may need to consider
drilling a larger mounting hole. Mask panel area around hole
position to protect paintwork and headliner. Drill a pilot hole, and
then increase to 19mm (3/4”), ensuring that drill/cutter bit does not
contact headliner. Clean area around the hole, carefully removing
any burrs and swarf. Remove paint and primer from under panel
surface to ensure low resistance contact by washer and nut. Apply
some petroleum jelly or paint around the hole to prevent corrosion.
Hole
19
4. Fitting the antenna
Remove protective backing from underside of antenna, feed coaxial cables through panel. Position the
antenna over the hole ensuring correct orientation and stick to panel by applying firm, even, downward
pressure.
In all cases, the earthing washer must make low resistance electrical contact with the ground plane (<0.2
Ω).Select a mounting location, checking for roof curvature to ensure that the antenna base will have a
flat mounting surface if possible. The antenna should be located as far as possible from surrounding roof
mounted items (e.g light bar, air con unit). Ensure that there is adequate under panel clearance and that
there is no double skin panel or cross brace present. Measure to check for central position if applicable.
