Installation Guide

SAFEmine Ltd | www.safe-mine.com | [e-mail] 28/39
SAFEmine (part of Hexagon Mining)
Baarerstrasse 133, CH-6300 Zug
Switzerland
www.hexagon.com
 Be vigilant of the maximum cable length. Re-rout if necessary. Consult the below list for more
information.
If you plan to cut your coaxial cables to length and crimp the connectors yourself please attain to the
following:
 The maximum acceptable attenuation for cables and connectors is 3dB/10m @ 900MHz
 Better: The required overall attenuation for a cable and its connectors must be below 5dB.
 The inner conductor must be a solid core
Find below the recommended maximum cable length between antenna and main unit per cable type
based on a maximum attenuation of 5dB for the overall connection. These values are indications and
may vary between manufacturers of coaxial cables. Please see the datasheet and send it to
SAFEmine prior to the installation.
Cable Types
1
:
RF @950MHz
GPS @1.575GHz
GSM/LTE @
1.9GHz
WiFi @ 2.4GHz
RG58
6.5m
4.5m
3.9m
3.4m
RG174
4.9m
3.7m
3.4m
3.0m
HDF-195
CDF-195
LMR 195
RF195
12.0m
9.8m
8.9m
7.9m
LMR-200
14.0m
10.9m
9.9m
8.8m
LMR-400
36.8m
28.6m
26.0m
23.1m
1
Use of different coaxial cable types requires prior written approval by SAFEmine.
To calculate the attenuation rate, sum up the attenuation of all segments as specified by the cable
manufacturer and add 0.3dB for every SMA connection.
Below you will find SAFEmine’s requirements regarding antenna cable installations:
 Respect the minimum bending radius. Typical minimum bend radius for RF195 type cables is
1.8cm (3/4 in. or your thumb) for a one time bend (i.e during installation), 5cm (2 1/3 in. or
your fist) for repeated bending (i.e after installation).
 It is highly recommended to add a braided sleeve around the cables for further UV and
abrasion protection.
 Connections in the antenna cable must be sealed over the whole assembly with heat shrink
tubing (glue type).
 Outside connections must be sealed with silicone tape to ensure a reliable, weatherproof
operation.
 Never use ‘electrical tape’ (e.g. black PVC tape) to weatherproof RF connections
 No installation may have more than one (1) connection
 All antenna cables must be carefully tied to the vehicle. Loosely vibrating cable will fatigue
and the central conductor will break over time.
 Make all cables removable to prevent them from being cut when the vehicle is being
serviced.