User's Manual

MLX
TM
Mobile Platform
Communication System
User’s Manual
Page 7 of 18
Omni Directional Antenna
Antenna diversity is an option and not a requirement. If the omni is positioned
such that it is the highest point on the vehicle, then multipath is not a problem
and a single omni performs 98-99% as good a dual configuration. The
disadvantage with omni antennas on many mine vehicles is that they are prone
to being knocked off during normal mining operations.
Neglecting losses between the amplifier and the antenna (some minimal cable
run is unavoidable), the radiated output power from a 6dB antenna would be
36dBm (4Watts). However, actual output power will be slightly less due to
unavoidable losses (cables, connectors, etc).
Block Diagram
Omni Directional Antenna Configuration