(Continued from page 1)
TWO PIECE MAST
For ease of handling and to facilitate shipment, the mast is
made in two sections. Assembly of the sections is quite simple
and requires only the use of ordinary hand tools. The unique
center splice assures proper alignment.
LIGHTNING PROTECTION
The aluminum mast with a pointed cap provides a positive
low resistance discharge path to the tower or ground system,
thus affording superior protection against lightning damage.
All radiators are operated at DC ground to provide further
protection against lightning and static buildup.
DUAL ANTENNAS
Dual antenna models are available which include two inde-
pendent antennas on a common mast, each with a separate
feed line terminated at the bottom of the mast. One antenna
is isolated from the other by 30 dB. Model DB224S-( ) con-
sists of two omnidirectional antennas, each having a gain of
3 dBd.
SIDE MOUNTING
When the DB224-( ) and DB224E-( ) antennas are mounted
to the side of a tower the horizontal radiation pattern neces-
sarily becomes distorted. The patterns shown below indicate
the typical pattern shape of the antenna side mounted
on a tower with an 18" to 24" face using the DB5001 Side
Mount Kit.
The DB5001 Side Mount Kit positions the antenna approxi-
mately 18" from the tower and consists of an upper sway
brace, lower bracket (both galvanized) and the necessary
hardware for attaching the bracket to round tower members
up to 3" OD, or angular members up to 2" on a side. Other
size clamps can be supplied on special order.
Figure 3. Radiation Patterns for Top Mounted
DB224-( ) and DB224E-( ) Antennas.
Figure 4. Radiation Patterns
(continued on page 3)
095008-000
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