Bird Technologies 89-86A-02-18 User Manual
Ou're, Eard, Oud and

Y
OU'RE
H
EARD,
L
OUD AND
C
LEAR.
8625 Industrial Parkway, Angola, NY 14006 Tel: 716-549-4700 Fax: 716-549-4772 [email protected] www.bird-technologies.com
GENERAL DESCRIPTION
This manual details the installation of an optional
narrowband preselector filter for the TX RX Sys-
tems Tower Top Amplifier. There are nine different
filters available for use with your TTA system. Four
filters operate in the 792 to 806 MHz range and five
filters in the 806 to 824 MHz range. Table 1 lists all
of the narrowband filters available. The narrowband
filter is designed to be added to the TTA systems
RF signal path just after the distribution amplifier in
the MCU. The additional filter will provide a nar-
rower pass window for the MCU.
Figure 1 shows the basic interconnect diagram for
the filter. It is recommended that the filter be
mounted in the same rack and just above the MCU.
The optional filter will require 2 “rack units” of
space.
INSTALLATION KIT
Included in the installation kit are:
1) Panel-mounted narrowband preselector with
mounting plates.
2) 24-inch BNC / N cable.
3) 24-inch SMA / N cable.
4) Required installation screws.
Installation Manual for Optional Narrowband Preselector Filter
Models 89/83F-02-03/06/09/14 and 89-86A-02-03/05/10/15/18
Dist
Amp
Opt
Filter
8-Way
4-Way
8-Way
RF
OUT
RF
OUT
RF IN
From
Tower
Figure 1: Basic interconnect diagram for the optional filter.
Filter
Model
Operating
Range
(MHz)
Bandwidth
(MHz)
89-83F-02-03
792 to 806
3
89-83F-02-06
792 to 806
6
89-83F-02-09
792 to 806
9
89-83F-02-14
792 to 806
14
89-86A-02-03
806 to 824
3
89-86A-02-05
806 to 824
5
89-86A-02-10
806 to 824
10
89-86A-02-15
806 to 824
15
89-86A-02-18
806 to 824
18
Table 1: Optional Narrowband Filters.
7-9434-2