User Manual

Installation Manual Cab-mount aerial installation
Leave both rotators in the 'NORTH' position for the mast and antennae array indexing and put a pen mark on
upper and lower parts of each rotator so that the 'NORTH' position is dearly visible.
Typical setting of the cab-mount antenna
After installing the antenna (see Cab-mount aerial installation on page 8-14), a variety of
adjustments can be considered with a view to coveting your specific spread performance. But
before attempting any adjustment, the recording unit has to be located to optimise the system's
RF performance.
Choosing a good site involves prior planning. An advance party and survey crew typically
provides site information, including a suggested spot to place the Recording Unit.
It is also helpful to consult a topographical map.
A recording unit is situated for best operation when located:
· Out of hazardous areas.
STOP CAUTION
Do not raise any system antenna near electrical power distribution lines.
· At maximum possible elevation for optimum RF performance.
· At the most suitable place to minimize REM re-location during the operation.
· Away from tall, dense foliage and other objects that could possibly attenuate RF signals.
· Away from outside RF interference patterns.
· Within the system's RF range, which is typically 12 to 24 km% but will vary in relation to
the above listed conditions configurations with two stacked 7-element YAGI dual arrays.
OMNI 12 - 18 km (8 - 11 miles)
Yagi 18 - 24 km (11 - 15 miles)
0311400 8-17