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Andrew Datasheet
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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.
ELECTRICAL DESIGN
The antenna is a four stack collinear array designed to pro-
vide high gain, broad bandwidth and minimum pattern dis-
tortion. A binary cable harness is used to ensure equal in-
phase power distribution to all radiating elements.
OPTIONAL RADIATION PATTERN
The DB224 can be used as an omnidirectional antenna hav-
ing 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 (col-
linear) along the mast. When top mounted, the omni and
elliptical models provide radiation patterns as shown in Fig-
ure 3. When side mounted, the two models provide signifi-
cantly 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.
We have the installation instructions available for this product upon request.
