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Monopole Antenna Mounting Options
A monopole (single element) antenna may
be mounted to a grounded light box or junc-
tion box in a ceiling or floor using the Mount-
ing Plate and Mounting Bracket.
BEFORE STARTING, reverse the Antenna
Module on the Mounting Bracket, then install
the Hex Kep nut on the ground post (see
Diagram G at right). The combination of the
Mounting Bracket, nut and your grounded
electrical box provides the required ground
for the antenna.
If you do not have access to a grounded box,
you will need to attach a flexible antenna el-
ement to the ground side of the Antenna
Module (see Diagram I). Be sure to use the
correct length element (longer wire for 72
MHz, shorter one for 216 MHz). Connect the
wire underneath the shorting nut and run it
up into the ceiling.
Diagram H. Ceiling mounted monopole with a
grounded box.
LA-122 Universal Antenna Kit
LISTEN TECHNOLOGIES CORPORATION 8535 South 700 West, Suite A Sandy, Utah 84070-2515 USA
Phone: +1.801.233.8992 USA Toll Free: 1.800.330.0891 Fax:+1.801.233.8995 e-mail: info@listentech.com
Diagram I. Ceiling mounted monopole with a
flexible antenna attached to provide a ground. This
installation creates a dipole antenna, which has
better performance than a monopole. The Shorting
Plate is not used in this configuration.
Mount to a Grounded Electrical Box, Ceiling or Floor
Ground side of
Antenna Module
Hex Kep nut
Nuts from ground side
of Antenna Module
Diagram G. Reversing the Antenna Module on the Mount-
ing Bracket.
Flexible antenna is used
to provide ground
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