PRODUCT DESCRIPTION
The DB224 is a heavy duty, light weight, high gain antenna.
It is suitable for mounting to the top or on the side of a tower.
Clamps for top mounting are supplied with the antenna; an
additional side mount kit (DB5001) must be ordered for side
mounting.
The antenna is a four stack collinear array designed to provide
high gain, broad bandwidth and minimum pattern distortion.
A binary cable harness is used to ensure equal inphase
power distribution to all radiating elements.
ELECTRICAL DESIGN
OPTIONAL RADIATION PATTERN
The DB224 can be used as an omnidirectional antenna
having a gain of 6 dBd or as an elliptical pattern antenna
having a maximum gain of 9 dBd. An omni pattern is
achieved when the four dipole elements are spaced evenly,
every 90° around the mast (Figures 1 and 2). An elliptical
pattern is obtained when all four dipole elements are positioned
in a line (collinear) along the mast. When top mounted, the
omni and elliptical models provide radiation patterns as shown
in Figure 3. When side mounted, the two models provide
significantly different radiation patterns (see SIDE MOUNTING
and Figure 4). The antenna can be changed in the field from
one pattern to the other using ordinary hand tools.
Figure 2. Top View Dipole Alignment
(continued on page 2)
Wear shoes with rubber soles and heels.
Wear protective clothingincluding a long-
sleeved shirt and rubber gloves.
Do not install near power lines. Power lines,
telephone lines, and guy wires look the same.
Assume any wire or line can electrocute you.
Do not install on a wet or windy day or
when lightning or thunder is in the area.
Do not use metal ladder.
Figure 1. Dipole Alignment
SAFETY NOTICE
The installation, maintenance, or removal of an antenna
requires qualified, experienced personnel. CommScope
installation instructions are written for such installation
personnel. Antenna systems should be inspected once a
year by qualified personnel to verify proper installation,
maintenance, and condition of equipment.
CommScope disclaims any liability or responsibility for the
results of improper or unsafe installation practices.
It is recommended that transmit power be turned off
when the field installation is performed. Follow all
applicable safety precautions as shown on this page.
Broad Band Gain Antenna
DB224
095008-000 Revision R, July 2016
Page 1 of 4
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