Installation Guide

SAFEmine Ltd | www.safe-mine.com | [e-mail] 32/39
SAFEmine (part of Hexagon Mining)
Baarerstrasse 133, CH-6300 Zug
Switzerland
www.hexagon.com
 In order to secure the antenna mounting with the provided insulating washer and nut it is
necessary to have access to the backside of the mounting surface.
Metallic Surface: It is compulsory to use a metallic surface as a mounting platform. The metallic
surface provides an effective shield against ground reflections of the GPS signal and helps to
improve RF connectivity. To omit the metallic mounting surface can result in poor GPS positioning
and decreased range of RF communication.
Finally to attach the antenna the following steps are necessary:
 From the top side:
 After removing the nut and the washer from the threaded shaft feed the cables through the
hole of the mounting surface.
 Insert the threaded shaft through the hole until the antenna is sitting flush with the soft foam
cushion on the metallic surface.
 From the back side:
 Feed the cables through the insulating washer from the narrower end.
 Slide the washer over the shaft such that the narrow part of the insulating washer sinks into
the space between the shaft and the mounting hole.
 Make sure the insulating washer lies flush on the back side of the mounting surface. If this is
not the case, carefully reduce the height of the small neck of the insulation washer. Do not
remove it completely since this
would render the washer useless
and the threaded shaft could
electrically contact with the
mounting surface.
 Next slide the nut over the cables
and screw it on the threaded shaft.
The nut should be tightened with a
torque of 5 ft-lb or 6.8 nm in order
to properly seal the gasket.
Tighten the nut with a wrench.
 Finally, feed the cables to the
receiver thru additional jumper
cables.
Insulating washer: The threaded shaft of the antennas must always be isolated from the vehicle in
order to avoid ground loops. to achieve a reliable isolation between the antenna shaft and the
metallic mounting surface it is compulsory to install the insulation washer. this washer possesses a
small neck which isolates the inner hole surface from the threads on the antenna mounting shaft
Suitable insulating washers are available from SAFEmine and can be ordered separately if needed.
Please contact your SAFEmine support responsible if you have any questions regarding the best
practices and potential pitfalls when installing through-hole mount antennas.