19-20: The roofs of this mainte-
nance truck and a locomotive
show two installations of whip
antennas. Whips are generally
mounted near the center of a
roof to create a ground plane
which optimizes the perfor-
mance of the antenna.
20
19
The dome antenna. A more
modern installation, the
dome incorporates mul-
tiple antenna technolo-
gies within one enclosure.
Found in square, octagonal
and round styles, this detail
is available frommultiple
manufacturers, including
Hi-Tech Details whose white
plastic molding requires no
painting.
The antenna array. Becom-
ing more common as radio
equipment becomes more
advanced are arrays consist-
ing of multiple antennas
capable of transmitting and
receiving data, voice and
GPS data.
Information continued on the
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