Listen Technologies LA-122 Manuale Utente

Contents of Kit ............................................................................... page 2

Specifications ................................................................................ page 3

Architectural Specifications .......................................................... page 3

Important Things to Note Before Starting .................................... page 4

Selecting an Antenna Location ..................................................... page 6

Choosing Which Antenna to Use .................................................. page 6

Dipole Antenna Mounting Options ................................................ page 7

Monopole Antenna Mounting Options ......................................... page 11

Troubleshooting ............................................................................. page 14

Warranty ......................................................................................... page 16

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

Specifications

Center Frequencies:

73.50 MHz and 216.50 MHz

Antenna Types:

Monopole and Dipole

Antenna Gain:

Unity

Antenna Segment Lengths:

(same for both rigid and flexible antennas)

72 MHz: 39.25 in (1.0 m); 216 MHz: 12.25 in (31.1 cm)

Dipole Vertical Clearance:

72 MHz: 79.75 in (2.03 m); 216 MHz: 25.75 in (65.4 cm)

Connector:

Standard BNC

Coax Provided:

25 ft (7.6 m) RG58 with BNC connectors

Mounting Options:

Wall mount, dual and single electrical box, ceiling electrical box,

horizontal surface mount (such as on top of a rack), ceiling /
inverse mounting, flexible mounting in-wall or in-ceiling and
mast or conduit mount

Mounting Hardware:

Provided. Includes self-tapping sheet metal screws, drywall

anchors, and all hardware required to mount to electrical boxes.
Does not include hardware required to mount to a mast (avail-
able at most hardware stores)

Mounting Bracket Dimensions:4.5 in (11 cm) wide x 7.0 in (18 cm) deep x 2.5 in(6.4 cm) high
Mounting Plate Dimensions:

4.48 in (11.4 cm) x 4.55 in (11.6 cm)

Shipping Box Dimensions:

2.76 in x 16.3 in x 17.1 in
(70 mm x 415 mm x 435 mm)

Weight:

4.4 Lbs. (2 kg)

Architectural Specifications

The Universal Antenna Kit shall be capable of operating from 72.0 to 76.0 MHz with a
center frequency of 73.5 MHz and from 216.0 to 217.0 MHz with a center frequency of
216.5  MHz.    The  kit  shall  include  the  necessary  mounting  hardware  to  mount  the
antenna on a single or dual electrical box, directly on a wall, on a ceiling electrical box
or on a flat surface.  The antenna shall have a BNC connector and the kit shall come
with 25 ft (7.6 m) of RG58 coax with BNC connectors.  The kit shall include rigid and
flexible antenna radials.  The Listen LA-122 Universal Antenna Kit is specified.

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